Office, Industrial & Retail Property Valuation and Advisory
Valuation services for retail, industrial, and office properties based on data-driven insights from over 12,000 annual commercial valuations across regional and metropolitan Australia.
Commercial property valuations are nuanced and consider factors ranging from the property’s net income to the current market value of similar properties. Whether you’re seeking valuation or advisory services for an office building, retail space, or industrial facility – our team has the tools and knowledge to provide individualised reporting and advice to support your financial decisions and needs.

Our Coverage
We have a team of more than 130 local valuers providing coverage across 98% of Australia’s postcodes. Our experts have local knowledge in metropolitan to rural areas and experience working in commercial spaces like retail, offices, and industrial.

Our Technology
Our technology enhances the valuation process for everyone involved with customisable, automated workflows and centralised systems to access, manage, and deliver your reports.

Our Process
We integrate innovation into every step of our process from ordering a valuation to receiving your final report. Our seamless valuation experience combines the human expertise of our valuers and the efficiency of our technology.
Office, Industrial & Retail Property Services
Our Office, Industrial & Retail Property Expertise
Our Experts

Ross Turner
General Manager - Commercial & Agri

Michael McNulty
National Director Operations - Commercial

Chris Mitrothanasis
Senior Director – Government & Advisory (NSW, QLD, NT & WA)

Dan Hill
Senior Director

Victoria Gracie
Senior Director - Regional Commercial & Agribusiness

Will Reynolds
Director Technical Services

Ryan Danaher
Head of Department- Alternate Investments

Alexander Ben
Director - Commercial

Andrew Bray
Director - Regional Commercial & Agribusiness

Ben Farquhar
Director - Core Commercial

Daniel Sander
Director - Commercial

Gavin Lipplegoes
Director - Specialised & Advisory

Glenn Boyd
Director Specialised & Advisory
![Headshot of John O'Grady [C]](https://opteonsolutions.com/hubfs/Bundy%20Images/John%20OGrady.jpg)
John O'Grady [C]
Director - Specialised and Advisory

Joshua Fulton
Director - Specialised and Advisory

Kevin Murphy
Director - Commercial

Mark Quinn
Director - Specialised & Advisory

Matt Morton
Director - Regional Commercial & Agribusiness

Murray Davis
Director Specialised & Advisory

Shane Low
Director - Commercial

Stephen Incerti
Director - Regional Commercial & Agribusiness

Ty Winduss
Director - Commercial

Ben Giesecke
Associate Director - NT

Bill Kassaras
Associate Director

Darrelle Manery
Associate Director - Residential

Karen Bates
Associate Director Commercial, Agribusiness & Advisory

Kylie Pryse-Jones
Associate Director

Mark Garroway
Associate Director

Seamus Macleod
Associate Director - Specialised & Advisory

Simon Pascoe
Associate Director - Residential

Thomas Dowling
Associate Director - Core Commercial

Tim Heath
Associate Director

Artur Giller
Senior Valuer - Commercial Specialist

Cindy Lang
Senior Valuer - Commercial Specialist

Edward Ellis
Senior Commercial and Agribusiness Property Valuer

Enza Taranto
Senior Valuer - Commercial

Hayden Mcleod
Senior Valuer

Ian Britton
Senior Certified Property Valuer

Ian O'Shea
Senior Valuer - Commercial Specialist

James Sharpe
Senior Commercial Property Valuer

James Stuttard
Senior Valuer

Kerri Ellis
Senior Commercial Valuer

Leo Bagon
Senior Valuer - Commercial Specialist

Mark Cox
Senior Valuer

Mark Youngman
Senior Valuer

Max Stephanides
Senior Commercial Property Valuer

Michael Schild
Senior Commercial and Agribusiness Property Valuer

Nicole Quiney
Senior Valuer / Health Sector Specialist

Tim Adams
Senior Valuer

Wayne Walden
Senior Commercial Property Valuer

William Sutherland
Senior Valuer

Alex Dickinson
Valuer Specialised & Advisory

Belinda Donaldson
Certified Practising Valuer

Cameron Abbott
Certified Practising Valuer

Crystal Chow
Commercial Property Valuer

Daniel Ackroyd
Certified Practising Valuer

David Lee
Certified Practising Valuer

Emmanuel Ganakas
Certified Practising Valuer

Jack Gibson
Certified Practising Valuer

Jennifer Bell
Commercial Valuer

Josh Stanton
Certified Practising Valuer

Julian Nelthorpe
Certified Practising Valuer

Michael Holt
Certified Practising Valuer

Natasha Zerna
Certified Practising Valuer

Nick Johnston
Certified Practising Valuer

Ryan Webster
Valuer Specialised & Advisory

Tadgh O'Brien
Certified Practising Valuer

Taila Manzone
Certified Practising Valuer

Tamsin Quayle
Certified Practising Valuer

Tim Muir
Certified Practising Valuer

Tomhas Curtin
Certified Practising Valuer

Ben Murphy
Partner

Nick Walls
Managing Partner

Michael Smith
Senior Valuer

David Gates
Director

David McKenzie
Director

James Brennan
Managing Director

James Flanagan
Director

Malcolm Reid
Director

Martin Tremain
Director

Matthew Tall
Director

Michael Reid
Director

Stuart Prowse
Director

Simon Toyer
Operations Manager

Peter Old
Managing Valuer

Matt Munro
Senior Valuer

Samuel Palmer
Senior Valuer

Fraser Robertson
Valuer

Calvin Rogers
Director

Fran Moore
Certified Practising Valuer

David Paterson
Property Valuer

Vincent Graham
Director

Ross Turner
Areas of Expertise
- Sydney metropolitan office, office development and mixed-use valuations for mortgage security, financial reporting, advisory and due diligence purposes
- Childcare valuations (including national portfolio reporting and management)
- National portfolio valuations for Corporates, Government and Non for Profits for annual reporting, due diligence and advisory purposes
- Rent review valuations and assessments
- Valuation audit, and risk review advice for annual review assessments.
- Research and property advisory for national property markets, more particularly for those markets outside of those covered by traditional PCA Research
Industry Experience
Ross is the General Manager for Commercial and Agri, with over 18 years’ experience in property valuation and advisory across Australia in both metropolitan and regional markets.
Ross has the benefit of having previously reviewed and provided valuation advice from a financier’s perspective in an institutional banking environment. He has considerable experience managing large valuation projects for Government and Corporates across Australia for financial reporting, strategic advisory and mortgage security purposes.
Formal Qualifications
- Bachelor of Business Management, (Real Estate and Development), University of Queensland
- Certified Practicing Valuer
- Associate Member of the Australian Property Institute

Michael McNulty
Areas of Expertise
- Commercial Valuations
- Rural Lifestyle Valuations
- Residential Valuations
- Municipal Valuations
- Valuations for financial reporting
- Valuation Portfolio management
Industry Experience
Michael has over 20 years’ property industry experience across Commercial, Residential, Urban Growth, Municipal and Rural Lifestyle sectors. Prior to being promoted to National Director of Commercial Operations, Michael operated in the capacity of Regional Director at Opteon for over seven years managing Commercial, Agribusiness, Residential and Specialised Valuation teams across the multiple states. With a strong focus on positive customer outcomes, Michael’s experience growing and developing specialist teams across multiple sectors is broad.
Formal Qualifications
- Certified Practicing Valuer (CPV)
- Associate Member of the Australian Property Institute
- Bachelor of Business (Property)
- Certificate IV in Real Estate (Real Estate License)
- Diploma of Financial Services
- Masters of Business Administration (MBA)

Chris Mitrothanasis
Areas of Expertise
- Market Value Assessments
- Banking and Finance Valuations
- Financial Reporting – Australian Accounting Standards
- Matrimonial and Family Court Valuations
- Taxation (Stamp Duty, Capital Gains & GST)
- Replacement Insurance Value Assessments
- Compensation Assessments – Just Terms Compensation Act 1991
- Market Assessments – Development & Divestment
Industry Experience
Chris Mitrothanasis currently leads Opteon’s Government services teams in NSW, QLD, NT and WA as Senior Director – Government & Advisory.
With over 22 years’ experience within the valuation industry, Chris has brought a wealth of experience and knowledge to Opteon. He is a Fellow of the Australian Property Institute, a sitting member of the API NSW State Committee, a Certified Practicing Valuer and has completed a Bachelor of Commerce (Land Economics) Degree at the University of Western Sydney.
Chris is accredited within Opteon as a specialist childcare valuer whilst also an expert in the residential and mixed-use development sector. Chris is also a recognised valuer on behalf of the Australian Property Institute, where he is commissioned to undertake Commercial and Industrial rental determinations.
Formal Qualifications
- Certified Practising Valuer
- Fellow of the Australian Property Institute (API Member No. 69131)
- Bachelor of Commerce (Land Economics) Degree - University of Western Sydney

Dan Hill
Areas of Expertise
- Commercial valuations
- Valuations for financiers
- Asset valuations for financial reporting
- Rental advice and valuations
- Pre-sale and pre-purchase advice
- Office buildings including $100M campus development and prime CBD buildings
- Shopping Centres
- Institutional grade industrial assets
- Government valuations
Industry Experience
Dan started his valuation career valuing residential property, before moving to the Commercial Division of Opteon (Western Australia) in 2009. In 2014, Dan became a Director and Equity Partner of Opteon (Western Australia), the firm’s youngest-ever equity partner. In conjunction with six other partners, he was responsible for managing 65 staff, ensuring business plan and budget targets were met in areas including staff management, business development and financial analysis.
In 2017, following Opteon’s national integration, Dan was appointed Regional Director – Commercial and Agriculture, leading a team of 25 valuers across Western Australia.
He prepares valuation reports for key clients for finance purposes, acquisition and disposal, negotiation and strategic advice, as well as managing the day-to-day activities of his team, and their ongoing training and development
Daniel is committed to his own professional excellence and that of his team.
Formal Qualifications
- Bachelor of Commerce – Majoring in Property and Finance (Curtin University)
- Post Graduate Certificate of Property Valuation
- Associate Member of the Australian Property Institute
- Licensed Valuer in the State of Western Australia License No. 44361

Victoria Gracie
Areas of Expertise
- Residential
- Advisory
- Government Services
- Tax Depreciation
- Local Consulting and Advisory
Industry Experience
Victoria is the Regional Director at Opteon and is responsible for business operations and valuationservices in relation to performance and client relationships.
Victoria oversees the daily provision of quotes,tender applications and appointing the right Valuers across the Central and North Queensland areas to deliver client outcomes.
This region encompasses Opteon’s Regional Queensland localities Maryborough, Bundaberg, Gladstone,Rockhampton, Biloela, Emerald, Mackay, Whitsundays, Townsville, Mount Isa and Cairns.
Victoria started her career in the Mackay Property Market in 2009; where she gained experience in both the residential and commercial fields of valuation.
Victoria joined the Opteon Team in October 2011. Sshe has presented at numerous local events on topical local issues including the impact of Mining on the property market.
Formal Qualifications
- Associate Member of the Australian Property Institute
- Certified Practising Valuer registration No. 3561
- Bachelor of Property

Will Reynolds
Areas of Expertise
- Commercial and hospitality property valuation
- Complex agribusiness valuations
- Rental assessments and arbitrations
- Feasibility studies of development projects
- Property consulting including analysis of procurement and disposal options
- Business management
Industry Experience
William has in excess of 25 years’ experience as a Commercial Property Valuer working for multi-national accounting and valuation businesses, a period of employment with the Commonwealth of Australia (Australian Property Group), Colliers International, and with Opteon (and its predecessors) since 2000.
William is proud to have served on the Australian Valuation and Property Standards Board and was actively involved in the maintenance and writing of Valuation Standards and Guidance Notes for the Australian Property Institute (API). From 2017-19 William served as the Chair of the Tasmanian Committee of the API.
Major properties William has valued include the Commonwealth Government Centre; the Australian Taxation Office Building; the Henry Jones IXL Development (Sullivans Cove); Freycinet Lodge; Strahan Village; and major industrial facilities. Other assignments include the valuation of portfolios for various State Government Departments (State Growth, Treasury, Health and Police) and private sector corporations.
William specialises in intensive agribusiness/aquaculture and marine assets, and waterfront tourism resorts.
William has previously held company Director positions within professional service businesses managing a State-wide business with approximately 50 staff, and has experience in business management and corporate governance.
In July 2020 William was awarded the prestigious Royal Institute of Chartered Surveyors (RICS) Property Professional of the Year Award in recognition of his contributions to the property industry in Australia.
Formal Qualifications
- Bachelor of Business (Land Economy)
- Fellow of the Australian Property Institute
- Certified Practising Valuer
- Certificate of Compliance with the Australian Property Institute Continuing Professional Development Program

Ryan Danaher
Areas of Expertise
- Going Concern Valuations
- Rent Roll Valuations
- Pre-purchase Valuations
- Portfolio Valuations
- Financial Reporting Valuations
- Rental Assessments
Industry Experience
Ryan is a highly motivated and experienced property professional with 14 years’ experience in the property industry.
Ryan specialises in rent roll valuations in the real estate market and going concern valuations in the hospitality and leisure market. This includes assessing the value of estate agency rental portfolio’s, accommodation hotels, motels, gaming venues, pubs, caravan and tourist parks, manufactured housing parks and serviced accommodation facilities across Victoria and Tasmania.
In addition, Ryan has significant experience in retail, office and industrial valuations.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API Member No. 101142)
- Bachelor of Applied Science (Property and Valuations) (Honours) (2015)
- Certificate in Corporate Finance (2020)

Alexander Ben
Areas of Expertise
- Commercial office, retail and industrial valuations
- Childcare, medical clinics and cold storage facilities
- Mixed use developments
- Asset valuations for financial reporting
- Family law valuations
- Market rental assessments
Industry Experience
Alex has over 11 years of experience within the property industry with expertise across industrial, office, retail and mixed-use developments and with specialisations in childcare, medical clinics and cold store premises.
Prior to joining Opteon, Alex was previously the Director of Commercial Valuations at another firm – a position he held for five years.
Alex joined Opteon in late 2020, in the role of Director of Core Commercial. This important role services a number of clients including the major banks and private clients for financial reporting and legal advice.
Formal Qualifications
- Associate Member of the Australian Property Institute (API Member No. 63188)
- Certified Practising Valuer
- Bachelor of Business (Property)
- Member of the Property Council of Australia

Andrew Bray
Areas of Expertise
- Rural valuations including grazing, cropping, vineyards, horticultural property, irrigation property, feedlots, market gardens, agro forestry, grain handling and processing facilities and wind farms
- Valuations for mortgage security purposes
- Valuations for Family law purposes
- Asset valuations for financial reporting purposes
- Valuations for estate management purposes Valuations for property taxation, legislation and policy purposes
- Valuations for capital gains tax purposes
- Valuations for compulsory acquisition and forensic accounting purposes
- Commercial and residential property valuations
Industry Experience
Andrew has 20 years of experience as a valuer and has been employed by Opteon for 16 years. He is the Director of Agribusiness for Victoria which co-ordinates the Agribusiness Department and undertakes valuations in the western districts of Victoria. Before entering the property field Andrew worked on various rural properties throughout NSW as well as a family-owned mixed farming enterprise.
Formal Qualifications
- Associate Member of the Australian Property Institute
- Member of the Royal Institute of Chartered Surveyors
- API Accredited Specialist Water Valuer Bachelor of Commerce (Land Economy)
- Associate Diploma in Farm Management

Ben Farquhar
Areas of Expertise
- Mortgage valuations (residential, industrial, commercial/retail, real estate rent rolls) up to $10,000,000
- Rental valuations (for rent reviews and commercial disputes)
- Financial reporting valuations
- Expert witness valuations and Government consultancy
Industry Experience
Commencing his valuation career in 2004 in Perth and becoming licensed in 2007, Ben has tended to focus on commercial property valuations across most generic fields including industrial, commercial/retail and residential. In 2007 Ben moved to the Kimberley and over the following 11 years covered most asset classes including residential, going concerns (sub $5,000,000) and agri-business valuations. Over the course of 2017 and 2018, Ben assisted with a lead roll in mass appraisals for the Northern Territory Government in Darwin and Palmerston. At the beginning of 2019, Ben moved to Brisbane in the role of Senior Valuer focusing on commercial property.
Formal Qualifications
- Bachelor of Commerce
- Master of Property
- Associate of the Australian Property Institute (AAPI) – API No: 65252
- Licensed Valuer (Qld) – QVRB No: 4091MR

Daniel Sander
Areas of Expertise
- Valuation of Childcare and Accommodation assets
- Mortgage Security Valuations
- Matrimonial Settlement / Family Court Valuations
- Compulsory Acquisition Valuations
- Strategic Advisory Services for Clients
Industry Experience
Daniel has over 24 years’ experience in the Property Industry. He has extensive valuation experience in multiple asset classes throughout Adelaide and regional South Australia. His areas of specialisation include childcare (including freehold going concerns) and accommodation assets (motels, caravan parks). He has considerable experience in prestige residential, residential development projects, commercial, industrial and retail assets. He has undertaken numerous valuations for legal purposes (including for the Federal Circuit Court of Australia in family court proceedings) and is an experienced compulsory acquisition valuer. Daniel is currently an examiner for the Australian Property Institute for both RPV and CPV applicants. Daniel manages Opteon’s South Australian commercial and agribusiness valuation team and is responsible for meeting client delivery requirements within this team.
Formal Qualifications
- Certified Practising Valuer
- Fellow Member of the Australian Property Institute (API Member No. 64256)

Gavin Lipplegoes
Areas of Expertise
- Experienced in the provision of valuation services for a broad range of purposes, including Pre-Purchase/Sale advice, Mortgage Security, Expert Witness, Market Rental Assessments and Insurance Replacement
- Areas of specialisation include Cold Storage facilities, Commercial and Residential Developments, Real Estate Rent Rolls, Petrol Stations and Child Care Centres
- Extensive experience in the valuation of asset portfolios for Financial Reporting purposes, including Government (all levels), GBE, Not-For-Profit and Educational Asset property portfolios
Industry Experience
Gavin is a senior property professional with over 17-years of property experience in Tasmania. His expertise in the field was recognised in 2003 when he was awarded CPV. Gavin has extensive experience across Commercial and Residential property segments, including multi-lot developments. In 2019, Gavin was appointed Director – Specialist & Advisory (Commercial) and played a pivotal role in Valuer training and development in Real Estate Rent Roll Valuations in Victoria and Tasmania.
Formal Qualifications
- Graduate Diploma (Property)
- Associate of the Australian Property Institute
- Certified Practising Valuer (CPV)
- Bachelor of Business (Accounting)
- Certificate of Compliance with the Australian
- Property Institute Continuing Professional Development Program
- Fellow of the Financial Services Institute of Australasia
- Graduate Certificate in Commerce (Business Banking)

Glenn Boyd
Areas of Expertise
- Commercial Property Valuations (Office, Industrial, Retail Asset Classes etc.)
- Mortgage Security Valuations
- Service Stations, Car Washes & Fast-Food Outlets
- Medical Related premises
- Industrial and Commercial subdivisions
- Corporate Real Estate
- Rental Valuations and Determinations
Industry Experience
Glenn has 20 years’ industry experience and is employed as a valuer by Opteon as Director – Specialised & Advisory within the Commercial Department. He has previously held Valuation and Advisory Director roles in leading international and local commercial real estate agencies. Glenn has expertise in the valuation of commercial, industrial and retail property. He provides advice to major lending institutions, corporate and private clients for mortgage, financial reporting, acquisition, disposal and consulting purposes. Glenn has considerable experience in Rental Valuations and Determinations. Glenn joined Opteon in 2013.
Formal Qualifications
- Associate Member of the Australian Property Institute (API Member No. 62692)
- Member Royal Institute of Chartered Surveyors (MRICS)
- Bachelor of Business (Property) with Distinction, RMIT 1998
- Certified Practising Valuer (CPV)
- Certified Property Practitioner (CPP)
- API Accredited Specialist Retail Valuer
- Member of the API President and Small Business Commissioner (SBC) Panel of Determining Valuers
- Affiliate Member of The REIV
- Registered Valuer QLD & NSW
![Headshot of John O'Grady [C]](https://opteonsolutions.com/hubfs/Bundy%20Images/John%20OGrady.jpg)
John O'Grady [C]
Areas of Expertise
- Asset valuations for financial reporting and mortgage security purposes
- Central Business District office/retail and mixed use property valuation
- Commercial and Residential development projects
- Major land subdivision project valuations
- Compensation assessment valuations
- Valuation of accommodation hotels, motels and serviced apartment complexes
- Valuation of licensed premises and gaming premises
- Valuation of retirement villages, aged care facilities and private hospitals
- Strategic property investment advice
Industry Experience
John has 47 Years of experience as a practising property valuer and has held senior executive roles with Knight Frank Australia, CBRE and Savills prior to commencing with Opteon in 2012 as Head of Commercial Valuations. He provides wide ranging property advice supported by an unrivalled wealth of experience.
Formal Qualifications
- Associate Member of the Australian Property Institute
- Certificate of Real Estate Management & Valuation – RMIT 1972
- Licensed Real Estate Agent

Joshua Fulton
Areas of Expertise
- Commercial, industrial, office and retail property valuations
- Petroleum valuations
- Family Law valuations
- Asset valuations for financial reporting
- Asset valuation advice for various local Councils throughout Victoria
- Rental valuations
- Strategic property investment advice
- Mortgage and financial reporting valuations for the education sectors
Industry Experience
Joshua has over fifteen years of experience as a valuer and has been employed by Opteon throughout this period. In his Director role, he provides valuations of commercial and industrial properties throughout Melbourne and regional Victoria. Joshua is also a specialist in complex assets for financial reporting purposes having been involved in a number of large portfolio valuation contracts. He heads up Opteon’s specialist petroleum division, undertaking valuations throughout the state of Victoria and along the eastern seaboard. Joshua has completed the Asset Valuation for Financial Reporting Certificate Course and the Expert Witness Professional Certificate course, both ran by the Australian Property Institute, and has undertaken a number of valuations of varying asset types for Family Law purposes.
Formal Qualifications
- Associate Member of the Australian Property Institute (API Member No. 63369)
- Certified Practising Valuer
- Bachelor of Business (Property) – RMIT 2007
- Certificate IV in Real Estate (Agent’s license) – Swinburne 2001

Kevin Murphy
Areas of Expertise
- Commercial property valuations
- Mortgage security valuations
- Feasibility Analysis
- Family Law/Expert Witness
- Financial Reporting
- Rental Assessments/Determinations
Industry Experience
Kevin has over 10 years’ experience in real estate valuation and advisory services predominantly throughout metropolitan Sydney. Kevin’s extensive experience expands across a wide range of asset classes including commercial, industrial, retail, residential and development sites. Kevin provides high level valuation and advisory services for various clients including all major banks, financial institutions, private clients, government departments, national and multinational businesses.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API Member No. 77400)
- Bachelor of Science (Hons) Property Investment and Development

Mark Quinn
Areas of Expertise
- Specialised development valuations including master plan subdivisions, integrated unit developments
- Portfolio valuations within Cairns and surrounds and remote locations
- Expert evidence and litigation
- Prestige and residential properties
- Project feasibility analysis
Industry Experience
Mark has undertaken all facets of valuation over his 25 years of practising within North Queensland. This has included federal and supreme court matters, mortgage security purposes, resumptions and acquisitions, statutory assessment objections, capital gains tax and feasibility analysis of major projects in the region. Property valuations have been undertaken throughout Cairns and hinterlands and the more remote locations of Thursday Island, Karumba and Normanton. Mark’s role has previously involved training of cadet valuers and undertaking a National board member role.
Formal Qualifications
- Associate Diploma of Business - University of Qld
- Fellow of the Australian Property Institute (API Member No. 66658)
- Certified Practising Valuer
- Queensland Valuers Registration Board Registration No. 2348
- Fellow of the Urban Development Industry Association of Australia

Matt Morton
Areas of Expertise
- Industrial property valuations
- Commercial property valuations
- Development feasibility
- Rental valuations
- Residential valuations
- Asset valuations for financial reporting purposes
- Government valuations
Industry Experience
Matthew has more than 15 years’ valuation experience in North Queensland over a broad spectrum of commercial and residential properties.
This experience includes valuation and property advice in both commercial and residential matters pertaining to resumptions, insurance valuations, rating appeals, Family, Federal and Supreme Court Matters, rental determinations, residential development feasibility and high value industrial facilities.
Matthew’s current role also involves training of cadet valuers, quotations, authorisation and distribution of valuation assignments to the other valuers and management support for the whole Queensland commercial team.
Formal Qualifications
- Certified Practising Valuer (2697)
- Associate Member of the Australian Property Institute (3172)
- Bachelor of Business (Property Studies) – University of Queensland

Murray Davis
Areas of Expertise
- Pastoral and Agricultural Land Valuations for mortgage security and succession planning
- Valuation of Agribusiness Facilities and Associated Infrastructure
- Compensation Assessments for Land Acquisitions and Resumptions including mining, energy and gas, general infrastructure including roads, railways and power lines, compensation for damages and change of land use.
- Rural improvements valuations for tax purposes
- Valuation for Property Taxation and Legislation
Industry Experience
Murray commenced his career as an Agricultural Economist and Farm Financial Counsellor with the Queensland Department of Primary Industries from 1999 until 2003 working in Emerald, Bundaberg and Goondiwindi. Following this Murray was employed as an Agribusiness Specialist by the Commonwealth Bank, Emerald and Biloela until 2007 when he founded Powers Agribusiness Services in Biloela and worked as a Rural Consultant until 2011. During this time, Murray was also employed by NPR Valuers and become a Registered Valuer in November 2010.
Opteon (Central and Southern QLD) Pty Ltd purchased NPR Valuers in 2011. Murray became a partner of Opteon (Central Queensland) Pty Ltd in July 2014 which has now amalgamated into Opteon. Murray was appointed as Director – Specialised & Advisory in April 2017 and oversees rural property valuations undertaken in Queensland.
Murray specialises in the Agribusiness field and grew up on a family mixed farming operation. He has run his own cattle and dryland and irrigated cropping business since 2002 with properties located on the Darling Downs and in Central Queensland.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute
- Bachelor of Business (Property Studies)
- Bachelor of Agricultural Economics

Shane Low
Areas of Expertise
- Commercial property
- Leases
- Banking and finance valuations
- Pre-purchase & pre-sale advice valuations
- Rent roll valuations
Industry Experience
Shane has been in the property industry since May 2014 commencing as a Graduate Valuer whilst completing studies at Curtin University (Perth).
In 2016, Shane qualified as a Certified Practising Valuer with the Australian Property Institute and Department of Commerce (now Department of Mines, Industry Regulation and Safety). Shane is part of the commercial team in Western Australia conducting valuations focusing on commercial property (such as industrial, office, retail and medical assets) whilst also completing rent roll valuations. Shane holds the title of Director – Commercial, overseeing a new team of highly skilled commercial valuers.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API Member No. 83194)
- WA Land Valuers Licence (Licence No. 44894)
- Bachelor of Commerce (Property Valuation), Curtin University

Stephen Incerti
Areas of Expertise
- Commercial/Industrial
- Infrastructure ground leases
- Service stations/Roadhouses
- Tourist resorts/complexes
- Licensed premises
- Irrigated agricultural properties
- Hypothetical/Feasibility consultancy
- Receivers/Mortgagee in Possession
- All types of Residential
- Government valutions
Industry Experience
Steve is the Director – Regional WA.
Opteon has offices in Perth, Dunsborough, Broome, Albany, Geraldton and Kalgoorlie. Steve works from the Perth office and manages the WA team of valuers as well as being directly responsible in providing services to clients within the Pilbara region which he travels to regularly.
Steve has in excess of 30 years’ experience in valuation and consultancy. Initially having worked in Perth for both government and private entities, Steve relocated to Broome in March 2000 until his return to Perth in December 2014.
He has excellent knowledge of all types of property particularly within the North-West region which is a unique property market.
Formal Qualifications
- Member of the Australian Property Institute
- Certified Practising Valuer WA – License No 37965
- Bachelor of Business

Ty Winduss
Areas of Expertise
- Commercial office, retail and industrial valuations
- Self-storage, childcare and service station valuations
- Commercial development consultation and feasibility studies
- Asset valuations for financial reporting in accordance with Australian Accounting Standards
- Market rental assessments and arbitrations
- Property consultancy including analysis of procurement and disposal options
Industry Experience
Ty has 10 years’ experience working within the property valuation industry and became an associate member of the Australian Property Institute (CPV) mid 2012.
Prior to retuning to Tasmania in 2015, Ty spent several years in Melbourne, most recently employed with Jones Lang LaSalle, primarily undertaking valuations of institutional grade CBD and suburban commercial, retail and industrial assets. Additional roles included rental reviews, development feasibilities and various valuation requirements for larger Tasmanian assets.
Ty is now based in Hobart and operates within the commercial sector throughout Tasmania, providing a broad range of consultancy and valuation expertise for clients including the major banks, institutional and private investors.
Formal Qualifications
- Australian Property Institute Specialist Retail Valuers Course 2014
- Certificate of Compliance with the Australian Property Institute CPD Program 2019
- Certificate of Accreditation – Development Feasibility v5, Estate Master
- Certified Practising Valuer 2012
- Associate of the Australian Property Institute 2012
- Bachelor of Applied Science (Valuations) (with Honours 1st Class), Royal Melbourne Institute of Technology

Ben Giesecke
Areas of Expertise
- Residential and commercial valuations and property advisory
- Valuations for mortgage security
- Valuations for stamp duty, capital gains tax and statutory requirements
- Valuations for acquisition and disposal
- Valuations for family law
- Asset valuations for financial reporting purposes
- Rental valuations and determinations
Industry Experience
Ben joined the team at Opteon as Associate Director in Darwin. He brings with him over 17 years of valuation and advisory experience spanning over three capital cities including Darwin, Melbourne and Adelaide. Ben has extensive experience in residential and commercial valuations for mortgage security, stamp duty, acquisition, disposal, rental assessment and family law purposes.
Ben is a current local government elected Councilor of the City of Palmerston, a position he has held since early 2018. In that time, has served as an Alderman, Deputy Mayor and Acting Mayor. He is currently a sitting member of the Palmerston division of the Development Consent Authority and Council’s delegate to the Palmerston Regional Business Association. Ben has nominated for re-election at the upcoming local government elections in August 2021.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API No. 64591)
- Bachelor of Business (Property) – University of South Australia
- Currently studying a Master of Business Administration – Charles Darwin University
- Member Australian Institute of Company Directors

Bill Kassaras
Areas of Expertise
Bill provides valuations and consultancy for a broad range of purposes such as:
- Mortgage purposes
- Accounting and financial reporting purposes
- Acquisitions and disposals
- Market rent, rental reviews and rental determinations
- Compulsory acquisitions
- Development valuations incorporating feasibility analysis
- Statutory valuations
- Insurance purposes
Types of properties include:
- Commercial, retail and industrial assets
- Residential subdivisions and residential/mixed-use development sites
- Freehold childcare centres
- Easements
- Marinas
- Boarding houses
Industry Experience
Bill Kassaras is a Certified Practising Valuer with 14 years of valuation experience. He undertakes major and complex valuation engagements for a broad range of property asset classes and clients. Bill’s extensive valuation experience includes office buildings, residential/mixed-use development sites, rental determinations, rental reviews, QSR assets (Quick Service Restaurant), Service Stations and council rental benchmark setting for outdoor retail dining areas.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API Member No. 69189)
- Bachelor of Property Economics (Second Class Honours) - University of Technology Sydney (UTS)

Darrelle Manery
Areas of Expertise
- Specialised residential property valuations
- Rural and lifestyle property valuations
- Valuations for mortgage security purposes
- Valuations for property taxation, legislation, and policy purposes
- Valuations for pre-purchase / pre-sale advice
- Asset valuations for financial reporting purposes
- Rental valuations
- Unit entitlement assessments
- Small residential multi housing development
Industry Experience
Darrelle commenced her Valuation Career in 2003, working in the Newcastle/Central Coast and Hunter Valley area. Prior to joining Opteon in 2017, she had worked for several renowned local companies: Mark Skelton Valuers, and Property Valuations NSW (formally McMonigal Valuers). Darrelle is currently employed as Associate Director/Senior Valuer in the Newcastle Office. She is able to call from vast experience across varied property types when completing assignments. Having primarily focused on being a rural and residential property Valuer in the NSW Newcastle and Hunter Valley, she is an expert in her field. Darrelle specialises in residential mortgage valuations, rural lifestyle assessments, waterfront property, prestige property, and other rural and residential work comprising of family law assessments, strata assessment, stamp duty and capital gains assessments. Darrelle is a highly skilled practitioner, qualifies as Elite Valuer for the Banking industry, specialising in unique residential, prestige and rural residential property in the Newcastle, Central Coast, and Hunter Valley & Upper Hunter Valley locations.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API Member No. 69409)
- Advanced Diploma of Property Valuation (Distinction Level) (2000-2003)
- Occupational Health and Safety Induction Training Construction Certificate (March 2003)
- Hunter Institute TAFE – Newcastle, NSW (2001 – 2002)
- Diploma of Business (Real Estate Management) – Distinction Level
- Certificate IV Business (Property Management)
- Certificate IV Business (Real Estate Sales)
- Strata Management Certificate
- Commercial and Business Leasing Certificate
- Stock and Station Agent Certificate

Karen Bates
Areas of Expertise
- Commercial, industrial and rural properties in the Greater Newcastle, Hunter Valley and Central Coast
- Specialised property valuations, including service stations, heritage buildings, biodiversity stewardship and conservation sites, vineyards, contaminated land and mine subsidence affected land
- Compulsory acquisition and compensation valuations under Land Acquisition (Just Terms Compensation)
Industry Experience
Karen is an experienced property valuer providing commercial, industrial, rural and specialist valuations across Newcastle, Hunter Valley and the Central Coast.
Karen provides high quality valuation reports for mortgage security and specialist purposes, including compulsory acquisition and compensation valuations under Land Acquisition (Just Terms Compensation) Act 1991 and valuations as an expert witness pursuant to Division 15 of the Family Law Rules 2004.
She has developed strong working relationships with a broad range of stakeholders including local and state government, sales agents, property developers, and investors, and she is able to draw on this network to provide important insight into the property market and valuation drivers in the region.
Karen also plays a leadership role in the industry. She is currently a member of the API NSW State Committee, as well as being an API Examiner for valuer candidates, and she is a founding member of the Women in Property Valuation network.
Prior to returning to the property valuation profession, Karen spent 15 years as a regional economic development specialist working across Western Australia, South Australia and Queensland, both on the ground, and in higher level policy development, leadership and management positions.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API Member No. 81519)
- Master of Accounting
- Bachelor of Business in Property

Kylie Pryse-Jones
Areas of Expertise
- Rating and Taxing Valuations NSW
- Residential property valuations
- Commercial and Industrial Valuations
- Management of Government Rating and Taxing Contracts
Industry Experience
Kylie has over 25 years’ experience as a valuer and has been employed with Opteon for over 15 years. Her initial experience was in mortgage valuations of commercial, industrial, and residential properties for approximately 10 years. Since this period Kylie has worked in the Government sector of Rating and Taxing Valuations. Kylie is currently the Contract Manager of the Central West Contact Rating and Taxing Contract. Her prior roles included Senior Valuer with Goulburn Mulwaree contract and Valuer with Orange Contract District. Kylie has gained extensive experience in meeting deliverables and quality assurance associated with Government Contracts. Kylie has mentored and provided guidance for Assistant Valuers, as well as gained experience as the Operations Manager in Goulburn Contract area.
Formal Qualifications
- Bachelor of Business (Land Economy)
- Associate Member of the Australian Property Institute

Mark Garroway
Areas of Expertise
- Valuations in accordance with Valuation of Land Act 1916
- Valuations for compensation in accordance with the Land Acquisition (Just Terms Compensation) Act 1991
- Valuations for litigation including family law disputes
- Asset Valuations for Fair Value Financial Reporting requirements
Industry Experience
Mark joined Opteon in March 2018, when Omega Property Consultants merged with Opteon, and is now a valuable member of the Government Services team. Mark’s experience commenced with Omega in August 2016.
Mark has specialised in predominantly government services & commercial valuation work, assisting with compulsory acquisition valuations and fair value financial reporting work, including valuation of substantial state body portfolios exceeding $1 Billion in total value. Additional experience includes substantial field experience in land value objection review valuations, commercial mortgage valuations including industrial, retail and commercial property, rent reviews, family law valuations, pre-sale advice and advisory valuation work & development feasibility work.
Mark leads a business unit of valuers servicing valuable Opteon government clients including Transport for NSW, DPIE, Defence Housing Australia & Ambulance NSW.
Formal Qualifications
- Associate Member of the Australian Property Institute
- Certified Practising Valuer (CPV)
- Bachelor of Property Economics (B.PropEc), UTS
- Land & Property Information Valuation Services Accreditation

Seamus Macleod
Areas of Expertise
- Commercial Market Value Assessments
- Banking and Finance Valuations
- Matrimonial and Family Court Valuations
- Taxation (Stamp Duty, Capital Gains & GST)
- Replacement Insurance Value Assessments
- Rental Determinations
Industry Experience
Seamus is a highly motivated property professional with over eight years’ experience within the valuation industry. Seamus commenced with Opteon shortly after completing his Bachelor of Property Economics at the University of Technology Sydney. After working hard on increasing his skill set and expertise whenever he can, he has since gone on to complete his MBA in 2019.
Seamus is currently based near the Sydney CBD and concentrates on the Sydney metro area. His clients include the ‘big four’ banks, high net worth individuals and government departments. He was nominated as the NSW representative for Opteon’s Youth Leadership Team 2015-2016, building his skills not only in the valuation industry but as a professional leader.
Formal Qualifications
- Associate Member of the Australian Property Institute (API Member No. 82462)
- Certified Practicing Valuer
- Bachelor of Property Economics from UTS
- Master of Business Administration from UTS

Simon Pascoe
Areas of Expertise
- Residential valuations for mortgage security purposes
- Valuation of prestige residential properties
- Adelaide CBD apartment valuations
- Rural lifestyle property valuations
- Small scale residential development
Industry Experience
Simon has 18 years of experience in the valuation property industry and has been with Opteon since 2011.
Simon is one of two associate directors for the South Australian residential valuations department in which he is involved in managing and training staff.
Simon’s specialist area of expertise is in residential valuations,, having vast experience in all residential property types including but not limited to prestige residential, Adelaide CBD apartments, residential development sites and general residential properties across the State.
Simon has been involved with the API for nine years as an examiner for Graduate Valuers transitioning into a Provisional Membership with Residential Property Valuer (PMRPV) accreditation.
Formal Qualifications
- Associate Member of the Australian Property Institute with Certified Practising Valuer (CPV) status
- Bachelor of Business (Property)

Thomas Dowling
Areas of Expertise
- Residential Valuations
- Serviced commercial, retail, office and industrial property valuations
- Asset Valuations for financial reporting purposes
- Valuation Risk and Compliance
Industry Experience
Tom has been working with Opteon for seven years across multiple different departments with a broad knowledge of the entire valuation process, including three years’ experience as Team Leader Compliance – Australia, specialising in Valuation Compliance and later transitioning to specialisation in Commercial Valuations.
Tom is considered a commercial property expert for North Sydney, Northern Beaches and Central Coast NSW for serviced commercial, retail, office and industrial property valuations.
Formal Qualifications
- Certified Practicing Valuer
- Associate of the Australian Property Institute (API Member No. 84628)
- Bachelor of Property, Central Queensland University

Tim Heath
Areas of Expertise
- Commercial and residential valuations
- Mortgage requirements
- Asset valuations for financial reporting
- Strategic investment property advice
- Resumption of freehold land
- Pre-sale and pre-purchase advice
- Family law
Industry Experience
In 2021, Tim was appointed an Associate Director in the Commercial Division of Opteon (Western Australia). Tim has extensive experience valuing a broad range of complex asset types including large scale industrial facilities, englobo development sites, and general commercial/retail, together with more specialised asset types such as childcare centres, service stations and self-storage facilities.
Formal Qualifications
- Bachelor of Commerce (Property) at Curtin University of Technology in 2004
- Associate Member of the Australian Property Institute (API Member No. 65172)
- Licensed Valuer in the State of Western Australia, License No 44247
- Certified Practising Valuer

Artur Giller
Areas of Expertise
- Commercial (office, retail and industrial) property valuations for mortgage funding
- Valuations for pre-purchase /pre-sale advice
- Valuations of Food Processing and Cold Store facilities
- Training and support of less experienced team members
Industry Experience
Artur has more than 6 years of experience in Valuations and has been employed with Opteon since June 2014. Artur had previous property-related experience prior to joining Opteon including undertaking his own developments and working within Officeworks property division. During that time Artur developed strong underpinning principals within the property and finance sectors and sharped his analytical skills.
Artur joined Opteon with the sole intention of undertaking commercial valuations. His earlier reports were focused on residential development and hospitality work alongside the heads of both departments. Artur has since moved towards more straight forward commercial valuations undertaking predominantly Industrial, Retail and Office assets.
Formal Qualifications
- Certified Practising Valuer
- BAppSc (Property & Valuations Hons 1st Class)
- Agents Representative

Cindy Lang
Areas of Expertise
- Valuations for mortgage security purposes
- Valuations for pre-purchase/pre-sale advice purchases
- Asset valuations for financial reporting purposes
- Rental valuation
Industry Experience
Cindy has been working with Opteon for three years as a Certified Practising Valuer in the Commercial Department. Cindy has completed valuations of diverse property classes, ranging from retail, industrial and commercial properties across metropolitan Melbourne, since 2012.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australia Property Institute (API No. 81207)
- Certificate IV Property Services (Agent Representative)
- Master of Property – University of Melbourne 2013
- Bachelor of Environment, Major in Property – University of Melbourne 2010

Edward Ellis
Areas of Expertise
- Agribusiness valuations including grazing, broadacre cropping, viticulture, horticulture and irrigation properties
- Commercial and Industrial property valuations
- Residential and Rural Residential property valuations
- Residential Development valuations
- Valuations for Family Law and property settlement purposes – court-related matters
- Valuation & Consultancy to Receivers/ Managers
Industry Experience
Edward is a Senior Certified Practicing Valuer based in Adelaide. Edward has worked with Opteon since 2008, previously based in Orange NSW before relocating to South Australia in early 2020.
Formal Qualifications
- Associate Member of the Australian Property Institute (API)
- Certified Practising Valuer (CPV)
- Bachelor of Agribusiness (Marketing) – University of New England, Armidale
- Advanced Diploma of Property Valuation Open Training Education Network (OTEN), Strathfield

Enza Taranto
Areas of Expertise
- Commercial (office, retail and industrial) property valuations (private and mortgage funding)
- Residential Development (private and mortgage funding)
- Student Accommodation (private and mortgage funding)
- Valuations for pre-purchase /pre-sale advice
- Valuations for financial reporting
Industry Experience
Enza-Maree has been a qualified Certified Practicing Valuer for approximately 3 years and employed with Opteon for a total of 5 years. Throughout these 5 years, Enza-Maree has had experience in residential valuations, statutory valuations and specifically commercial valuations.
Enza-Maree specialises in commercial valuations including office, retail and industrial type properties, as well as complex residential properties including student accommodation and residential development valuations.
Enza-Maree operates throughout the south-west region of Victoria conducting valuations of various asset types for a wide variety of clients.
Formal Qualifications
- Certified Practicing Valuer
- Associate Member of the Australian Property Institute
- Bachelor of Property and Real Estate at Deakin University

Hayden Mcleod
Areas of Expertise
- Residential Valuations
- Commercial, Retail & Industrial Valuations
- Rural Valuations
- Developments Valuations & Consultancy
- Going Concern Valuations
- Depreciations Assessments
- Insurance Valuations
- Holiday Apartments
- Rental Valuations
- Port and other infrastructure ground leases
Industry Experience
Hayden has extensive property valuation and consultancy experience having started within the industry in late 2005. Hayden relocated to Broome in the latter part of 2012 to take up a senior valuation role with Opteon (North West WA), having previously worked in Perth specialising in a range of commercial, retail and industrial property valuation fields. Hayden has an intimate knowledge of the Kimberley and the various property markets this region encompasses. Hayden was a director of Opteon (North West WA) prior to integration in March 2017.
Formal Qualifications
- Certified Practising Valuer (CPV)
- Associate Member of the Australian Property Institute
- Bachelor of Commerce (Property & Commercial Law)

Ian Britton
Areas of Expertise
- Specialist hotel and motel Valuer
- Other ‘going concern’ valuations i.e. service stations, car washes, childcare centres, caravan parks, etc.
- Business Valuations (i.e. rent rolls and other specialised businesses)
- Court related matters
- Land purchase negotiations on behalf of Mining Companies and Statutory Authorities
- Specialised larger rural properties and enterprises
- Retail & Commercial Rental Assessments
- Inglobo development / subdivision parcels
- Valuations under the Land Acquisition (Just Terms Compensation) Act 1991
Industry Experience
Ian is a Senior Valuer with Opteon Solutions and has been employed in the Orange NSW office for the past 16 years, specialising in ‘going concern’ valuations together with complex commercial and rural property valuations.
Formal Qualifications
- Certified Practising Valuer
- Fellow of the Australian Property Institute FAPI
- Bachelor of Applied Science (Agriculture)graduating with Merit (University of Western Sydney)
- Advance Diploma of Property (Valuation) graduating with Distinction (OTEN)

Ian O'Shea
Areas of Expertise
- Hospitality valuations including Going Concerns and Leasehold interests
- Residential and Commercial development consultation
- Family law and single expert
- Asset valuations for financial reporting in accordance with Australian Accounting Standards
- Central business district office valuations
- Commercial office, retail and industrial valuations
- Rental assessments and arbitrations
- Property consultancy including analysis of procurement and disposal options
Industry Experience
Ian joined Opteon in 2012 from the Banking and Finance industry and has worked across a broad range of property types since this time. Ian is considered an expert in commercial property and provides advice on a large range of assets within Tasmania.
Formal Qualifications
- Associate Member of the Australian Property Institute (API Member No. 77195)
- Certified Practising Valuer
- Certificate of Compliance with the Australian Property Institute Continuing Professional Development Program
- Bachelor of Business
- Graduate Diploma in Property Valuations

James Sharpe
Areas of Expertise
- Commercial Office/Retail/Industrial Valuations for Mortgage Purposes
- Asset valuations for Financial Reporting
- Valuations for Compensation/Compulsory Acquisitions
- Residential Land Subdivision
- Development Finance Valuations
- Rental Valuations
- Valuations for Property Taxation
- Valuation for Rating Purposes
- Expert Witness for Court/Legal Proceedings
Industry Experience
James has extensive experience in the valuation of commercial, industrial, retail, office, residential and rural properties in the Illawarra area. He has prepared valuations for a wide range of uses varying from mortgage finance, for sale purchase, for taxation and legal proceedings. I have previous experience in preparing valuations as an expert witness for various Courts.
A former Chairman of the Australian Property Institute South Eastern Study Group, James became the Director of Opteon (South East Regional NSW) (previously Southern Valuers Opteon and Valuers Illawarra Pty Ltd respectively) from December 2002 to June 2014. Following this James was Regional Manager of Opteon from July 2014 to June 2017.
Formal Qualifications
- CPV Australian Property Institute
- FAPI Australian Property Institute
- Bachelor of Business (Land Economy) from Hawkesbury Agricultural College NSW

James Stuttard
Areas of Expertise
- Valuations of owner-occupied and investment-grade industrial, office and retail properties
- Residential Valuations
- “As Is” & “As if Complete” valuations for residential development projects
- Private Valuations for pre-purchase and pre-sale purposes
- Progress Inspection Reports
- Management of sale and rental evidence database
- Valuations of agricultural property
Industry Experience
James has worked in the property industry since 2015, starting as a Trainee Valuer at Opteon Solutions in the Residential Division. James gained his Land Valuers License in 2018 and is presently working as a Certified Property Valuer within the Commercial/Agricultural Division, working across multiple fields and asset types including office, retail, industrial, residential development, residential and agricultural.
Formal Qualifications
- Certified Practising Valuer
- Associate of the Australian Property Institute (API Member No. 104477)
- Bachelor of Commerce (Property Development & Valuation) Curtin University 2017
- WA Land Valuers License No. 44959

Kerri Ellis
Areas of Expertise
- Commercial valuations of industrial, office and retail properties
- Specialist experience with medical offices
- Specialist experience with going concern properties such as motels, caravan and cabin parks, animal accommodation, storage facilities and service stations
- Valuations for a range of purposes including mortgage security, property taxation, due diligence, financial reporting and compulsory acquisitions
Industry Experience
Kerri has over 12 years’ experience in the Property Valuation industry, specialising in commercial property valuations. With over 4 years’ experience as a Certified Practising Valuer, she has undertaken valuations for a diverse range of specialised and commercial assets across South East Queensland and Northern New South Wales. Kerri regularly provides reports for mortgage security, due diligence and financial reporting purposes.
Formal Qualifications
- Associate Member of the Australian Property Institute (API No. 101506)
- Certified Practising Valuer
- QLD Registered Valuer (QVRB No. 4013)
- Bachelor of Property – Central Queensland University (2017)

Leo Bagon
Areas of Expertise
- Mortgage Valuations
- Commercial Valuations (Industrial, Retail, Office and Development Sites)
- Market Value Assessments
- Residential Valuations
- Pre-purchase / Pre-sale advice Valuations
Industry Experience
Leo began his property career at the ANZ Bank in the Valuations Department. Leo’s tenure at ANZ Bank involved auditing of valuations for compliance and servicing valuation requests nationally. Leo joined Opteon in 2014 training in both residential and commercial valuations. In more recent times, Leo has regularly completed commercial valuations (Industrial, Retail, Office and Development Sites) for various purposes such as pre-purchase advice, superannuation, private and mortgage. Leo works throughout Melbourne’s Western region, Northern Metro Areas, the inner Melbourne CBD areas as well as the CBD of Melbourne. Leo has had experience in valuing specialised assets such as medical facilities, cold storage facilities and residential development projects.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API Member No. 86059)
- Bachelor of Applied Science Property (Valuations) RMIT, 201

Mark Youngman
Areas of Expertise
- Retail, industrial and office complexes
- Superannuation rentals and valuations
- Hospitality properties including gaming hotels, motels and tourist parks
- Leasehold business valuations
- Aquaculture and vineyards
- Asset/financial reporting
- Commercial rent reviews
- Pre purchase and presale commercial valuation and consultancy
Industry Experience
With a background in auditing, general accounting and management consulting, Mark has more than 10 years of experience in general valuation practice with all property types. Mark is considered a commercial and hospitality property expert and provides a large number of valuations of properties within Melbourne. As a result of Marks experience in commercial and hospitality valuations he has valued a range of property types including suburban and country hotels/motels, tourist parks, bottle shops, gaming and international hotel properties, reception centres, resorts, commercial vineyards, nursing homes, hospitals and also a period with the retail sales department.
Formal Qualifications
- Bachelor of Business in Accounting, UTAS, 1980.
- Associate Diploma in Valuation, 1987 with Distinction, RMIT (Melbourne)
- Graduate Diploma in Applied Finance and Investment 1996
- Chartered Accountant, 1984 to 2018

Max Stephanides
Areas of Expertise
- Valuation of General Commercial Property (Office,
- Industrial & Retail)
- Valuation of Medical Clinic and Funeral Home Assets
- Valuation for Mortgage and Loan Security Purposes
- Valuation of Commercial property for Self Managed
- Superannuation Funds
- Commercial Rental Assessments
- Assessment of Compensation for Compulsory Acquisition
- Advisory valuation including Pre-Purchase / Pre-Sale Advice
- Valuation for Family Law Purposes
- Replacement Insurance Assessments
Industry Experience
Max commenced employment with Opteon in 2012 and has developed extensive residential and commercial valuation experience throughout metropolitan Adelaide and Regional South Australia. Max provides valuation advice to government clients for rental, acquisition and disposal purposes. He also works with private clients ranging from small businesses to listed companies and the mortgage security sector, as part of Opteon’s advisory services offering. Max has a depth of experience in valuations across multiple asset classes including commercial, industrial, retail and residential development projects. With experience in the in-use valuation of Medical Clinics and Funeral Home Assets.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute
(API Member No. 64557) - Bachelor of Business (Property) - University of South
Australia

Michael Schild
Areas of Expertise
- Agribusiness valuations including broad acre cropping, grazing, horticulture, vineyards, dairy farms and orchards in Regional South Australia for banks, private sector and government clients
- Valuations of Commercial and Industrial Assets in Regional South Australia for banks and local government clients
- Valuations for acquisition and disposal purposes
- Freehold and leasehold properties along the Murray River
- Valuations of Residential and rural lifestyle properties
Industry Experience
Michael has been with Opteon since December 2008 and has extensive experience in agribusiness, commercial and residential valuations throughout regional South Australia particularly in the Barossa, South east, Riverland, Yorke Peninsula, Adelaide Hills, Fleurieiu and Mid North among other areas.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API No. 64350)
- Bachelor of Business (Commerce and Property)

Nicole Quiney
Areas of Expertise
- Health sector property valuations
- Commercial property valuations
- Industrial property valuations
- Rental assessments
- Valuations for family law purposes
- Valuations for mortgage security purposes
- Valuations for mortgagee in possession purposes
- Pre-purchase / Pre-sale advice
Industry Experience
Nicole has more than 25 years’ experience in property and real estate. She has been working with Opteon for over 8 years and gained a broad knowledge of the entire valuation process. Nicole has had exposure to most types of commercial properties, particularly in the Melbourne’s south east and southern regions. Nicole completed a large portion of her training valuing properties within the health sector, and now specialises in all health sector valuations including medical clinics, day procedure hospitals, dental clinics, allied health and veterinary clinics and hospitals.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API Member No. 83482)
- Senior Associate Member of The Australian Institute Bankers and Finance
- Associate Member of The Royal Institute of Charted Surveyors
- Bachelor of Business (Valuation), RMIT 1994

Tim Adams
Areas of Expertise
- Mortgage valuations for lending institutions
- Rural Valuations including coastal grazing and sugar cane properties
- Commercial/ Industrial Valuations
- Residential Valuations
- Asset Valuations for financial reporting purposes
- Compulsory acquisition valuations
- Rental valuations
- Strata Replacement Insurance valuations
- Valuations for tax implications
- Tax Depreciation
Industry Experience
Tim Adams was Registered as a Valuer in 1991 and has worked in both private valuation practice and Government valuations services in South East Queensland and Central Queensland. He commenced work with Opteon in Mackay in 2002. Since 2006 he has been based full time in the Airlie Beach office. Tim has gained extensive valuation experience in a wide range of regional property types and markets in the Whitsunday, Mackay and Burdekin regions of Central Queensland. Work completed includes residential, rural residential, Island property, agribusiness (coastal grazing and sugar cane), commercial and industrial properties and compulsory acquisition. Tim provides reports for mortgage purposes, Government Departments, Local Authorities and Private users. Tim has completed courses in Asset Valuation for Financial Reporting and Specialist Water Valuer assessment through the A.P.I.
Formal Qualifications
- Associate Member of the Australian Property Institute
- Certified Practicing Valuer (API No. 66172)
- Registered Qld Valuer No. 1870
- Associate Diploma of Business (Real Estate Valuation) Qld University 1991

Wayne Walden
Areas of Expertise
- Agribusiness property valuations
- Prestige, rural and lifestyle property valuations
- Rural land valuations
- Asset valuations for financial reporting
- Strategic investment property advice
- Valuation for property taxation, legislation and policy
- Family Law valuations
Industry Experience
Wayne has 13 years of experience as a valuer and 30 years of experience in the lending industry advising banks on risk and credit issues and valuation matters. In his role as Agribusiness Mentor, Wayne provides expert tuition to junior valuers. He specialises in viticulture, equine, dairy, prestige, lifestyle, intensive horticulture, poultry and general agriculture valuations and advisory on the fringes of Metropolitan Melbourne, throughout country Victoria and interstate. Prior to his employment with Opteon (Victoria), Wayne held the position of Chief Rural Officer for the Commonwealth Development Bank in Victoria and Tasmania for eight years.
Formal Qualifications
- Associate Member of the Australian Property Institute
- Bachelor of Business (Property) RMIT 1997
- Certificate in Real Estate and Valuations RMIT 1971
- Diploma of Agriculture Longerenong College 1964

William Sutherland
Areas of Expertise
- General Commercial Valuations (all asset classes including retail, industrial and offices)
- Development Project Valuations (residential englobo land and built form developments)
- Specialised Property Valuations (hotels, taverns, night clubs, small bars, caravan parks, motels, childcare centres, resorts, service stations etc.)
- Expert Witness Valuations
- Property Consultancy
Industry Experience
William has practised as a property valuer since June 2000. Prior to that, he practised as a quantity surveyor. He has extensive experience in the valuation of a range of property types, including vacant sites suitable for both pure residential built-form and mixed-use built-form development, and is a specialist in hotel and leisure property valuations.
He has undertaken valuations of various interests in real estate, including fee simple freehold interests, leasehold interests, and freehold going concern walk in, walk out interests. William has also undertaken consulting work for a range of purposes including government agency and corporate internal decision-making purposes. This consulting work has included cost/benefit analysis and other decision-making analyses for both tenants and landlords. Further, William has undertaken scenario analyses for optimal investment in office and industrial property, as well as hotel development feasibility modelling.
In addition, William has undertaken market rental valuations for determination purposes, and has been involved in negotiation and resolution of market rental disputes, both via the determination process and outside of the determination process, on behalf of clients.
Formal Qualifications
- Bachelor of Science (Quantity Surveying)
- Bachelor of Commerce (Management, Finance & Real Estate) (Hons)
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (Member No. 65314)
- Licensed Valuer No. 44413 for the State of Western Australia
- Professional Member of the Royal Institution of Chartered Surveyors (MRICS) – Chartered Valuation Surveyor & RICS Registered Valuer

Alex Dickinson
Areas of Expertise
- Market Value Assessments
- Banking and Finance Valuations
- Matrimonial and Family Court Valuations
- Commercial, Industrial and Retail Valuations
- Rent Rolls
- Hotels, Motels and Caravan Parks
- Prestige Residential
Industry Experience
Alex is a Senior Valuer at Opteon and is responsible for valuation services in relation to commercial/industrial development, prestige residential, rental assessments and specialised commercial properties including Hotels, Motels, Caravan Parks and tourism type property.
Alex has extensive experience throughout Central and Northern Queensland in a wide range of property matters and has been in the valuation industry for over 25 years. In addition to property valuations, Alex has gained wide experience in valuing Real Estate Rent Rolls within the Qld Region.
Formal Qualifications
- Associate Australian Property Institute API No: 66325
- Certified Practising Valuer
- Registered Queensland Property Valuer QVRB No: 2278
- Bachelor of Business (Property Studies) University of Qld

Crystal Chow
Areas of Expertise
- Market Value Assessments
- Banking and Finance Valuations
- Matrimonial and Family Court Valuations
- Taxation (Stamp Duty, Capital Gains & GST)
- Replacement Insurance Value Assessments
- Acquisition and disposal advice
Industry Experience
Crystal has six years’ experience in all types of residential, commercial and industrial type properties within Sydney. Government portfolio: Fire and Rescue NSW and Family Planning NSW for financial reporting.
Commercial valuation up to 10 mil.
Formal Qualifications
- Associate Member of the Australian Property Institute (API Member No. 83235)
- Certified Practicing Valuer (2018-present)
- Provisional Membership (2015-2017)
- Master of Property Development – University of Technology Sydney
- Tafe NSW Ultimo – Property Valuation
- Bachelor of Human Resource Management – Macquarie University

Daniel Ackroyd
Areas of Expertise
- Market Value Assessments
- Banking and Finance Valuations
- Matrimonial and Family Court Valuations
- Taxation (Stamp Duty, Capital Gains & GST)
- Replacement Insurance Value Assessments
- Acquisition & Disposal Advice
- Compulsory Acquisition
Industry Experience
After commencing his property career in Adelaide, Daniel moved to the Northern Territory in 2006. Daniel obtained his API CPV status in 2008 and in the subsequent years became a Senior Valuer practising in a variety of valuation fields and provided residential and commercial valuations for all of the major lending institutions including the big 4 banks.
In 2013 Daniel opened a valuation office in Cairns and subsequently provided valuation services throughout metropolitan, regional and remote Northern Queensland.
In 2018 Daniel joined the Opteon team conducting valuations out of the Opteon Cairns Office, and in 2019 took the role of Commercial Valuer.
During his career Daniel has conducted special purpose valuations of a variety of property types and has completed valuations of going concern operations for mortgage finance purposes.
Formal Qualifications
- Associate Member of the Australian Property Institute (API Member No. 64596)
- QLD Registered Valuer #3697MR
- Certified Practising Valuer – Property
- Certified Practising Valuer - Business
- Bachelor of Business (Property Stream) Uni SA

Emmanuel Ganakas
Areas of Expertise
- Commercial Market Value Assessments
- Banking and Finance Valuations
- Taxation (Stamp Duty, Capital Gains & GST)
- Replacement Insurance Value Assessments
- Rental Determinations
Industry Experience
Emmanuel is an enthusiastic and motivated property professional. He commenced working with Opteon in 2020 shortly after completing his Bachelor of Property Economics at the University of Technology Sydney. Initially joining the commercial valuation team as a Graduate Valuer, Emmanuel worked hard on increasing his skills set and expertise, and since went on to obtain his Certified Practicing Valuer accreditation in 2022. Emmanuel’s coverage is based in the Sydney metro area, specialising in the Commercial Core sector ranging from industrial, office, retail, and mixed-use assets predominantly for mortgage security purposes, as well as in government and advisory departments.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API Member No. 109197)
- Bachelor of Property Economics (2019) - University of Technology Sydney

Jack Gibson
Areas of Expertise
- Residential property valuations
- Commercial property valuations
- Valuations for mortgage security purposes
- Valuations for property taxation, legislation and policy purposes
- Valuations for pre-purchase / pre-sale advice purposes
- Asset valuations for financial reporting purposes
- Rental valuations
Industry Experience
Jack has over 10 years’ experience in the property valuation industry in both the public and private sectors. He began working with Opteon in 2013 for the Residential Valuation Team in South Australia and has since moved over to the Commercial Valuation Team. In his role as Certified Practising Valuer, he regularly undertakes independent residential and commercial property valuations predominantly for mortgage security, pre-purchase, mortgage in possession, pre-sale, financial reporting and taxation purposes.
Before joining Opteon, Jack worked as a Valuation Compliance and Risk Assessment Officer for Corelogic RPdata – Valex.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API Member No. 64487)
- Bachelor of Business and Property - UniSA

Jennifer Bell
Areas of Expertise
- Commercial and residential property valuations
- Valuations for mortgage security purposes
- Valuations for family law purposes
- Asset valuations for financial reporting purposes
- Market rental assessments
- Valuations for estate management purposes including property taxation, legislation and policy purpose
Industry Experience
Jennifer has 17 years’ experience working in property, having commenced her career within real estate agency, and obtaining a full Victorian Real Estate Licence.
Jennifer has worked as a valuer for over 12 years and her experience spans across a broad range of commercial and residential properties, including specialised health care assets throughout Victoria. Jennifer has lived on the Bellarine Peninsula and worked within the Geelong market since 2018.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API Member No. 75338)
- Bachelor of Applied Science (Valuation) – RMIT City Campus 2010
- Certificate IV Property (Real Estate Licence Course) – RMIT 2006

Josh Stanton
Areas of Expertise
- Residential
- Rural Residential
- Prestige Residential
- Family Law
- Insurance Replacement Valuations
- Mass Market Appraisal
Industry Experience
Josh has been working at Opteon for over 5 years acquiring in-depth knowledge on the residential valuation process. He is considered a residential property expert and provides large volume valuations of residential property within the Gladstone Regional Council area, as well as having significant experience working in the broader Central Queensland and Wide Bay regions.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API Member No. 101688)
- QLD Registered Valuer (QVRB No: 4087)
- Bachelor of Property

Julian Nelthorpe
Areas of Expertise
- Commercial property
- Residential property
- Banking and finance valuations
- Valuations for pre-purchase / pre-sale advice
- Rental valuations and leasing advice
Industry Experience
Julian is a Certified Practising Valuer with the Australian Property Institute and Department of Mines, Industry Regulation and Safety and has been working with Opteon for four years encompassing a breadth of knowledge across a number of different departments. Julian is currently part of the commercial team in Western Australia, conducting valuations and providing advice primarily on industrial, office and retail assets for a range of purposes within the Perth Metropolitan Area. Julian also travels regionally within the state, completing residential and commercial valuations in the Pilbara, Mid-West and Gascoyne regions.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API No. 102521)
- Bachelor of Property Development and Valuation– Curtin University

Michael Holt
Areas of Expertise
- Mortgage valuations (residential, commercial, industrial and retail up to $10,000,000)
- Rental valuations
- Financial reporting
- General private and government consultancy
Industry Experience
Michael commenced his career in commercial sales and leasing in 2012 before joining a national valuations and consulting firm in 2013.
He has experience with a wide range of property types and market segments including residential, commercial, industrial and retail as well as residential development valuations.
Michael has completed assessments predominantly for mortgage security purposes among others including professional advice, financial reporting, disposal and construction finance valuations.
He has undertaken valuations for a range of client including major banks and national lending institutions, public companies, Government, professional service providers and private clients.
Formal Qualifications
- Certified Practising Valuer
- Associate of the Australian Property Institute (AAPI Member 81269)
- Registered Valuer of Queensland (QVRB Registration 3870)
- Bachelor of Business Management - Real Estate and Development

Natasha Zerna
Areas of Expertise
- Residential property valuations
- Valuations for mortgage security purposes
- Valuations for pre-purchase / pre-sale advice
- Construction (As If Complete) valuations
- Commercial, industrial core commercial valuations
Industry Experience
Natasha has been employed by Opteon for 3 years, initially starting with the company as a Graduate Valuer, then progressing her qualifications to RPV shortly after. As a Residential Property Valuer, she conducted valuations mostly within Adelaide’s Inner North and Outer Northern areas. Natasha has recently joined Adelaide’s Commercial team providing assistance with commercial valuations across South Australia which include office, retail, and industrial properties, as well as childcare facilities and residential development valuations.
Formal Qualifications
- Provisional RPV Member of the Australian Property Institute (API Member No. 106457)
- Bachelor of Business (Property) – University of South Australia

Nick Johnston
Areas of Expertise
- Residential property valuations
- Retail valuations (shopping centres and large format retail)
- General commercial/Industrial
- Services stations
- Childcare centres
- Valuations for mortgage security and financial reporting
- Rental valuations, rent reviews/consultancy advice
- Receivers/Mortgage in Possession
Industry Experience
Nick has been working with Opteon in Broome servicing the Kimberley region (commercial and residential) since February 2019. Prior to that he was working for CBRE for three years within the Commercial Valuations and Advisory Department (Perth Office) undertaking valuations within a wide range of property types including retail, general commercial, childcare and service stations. Nick has good knowledge of the property industry within the Kimberley having spent the majority of his life here, but also having 3 years working experience in strata management, managing strata complexes throughout the Kimberley and Pilbara Regions.
Formal Qualifications
- Certified Practising Valuer
- Associate of the Australian Property Institute (API Member No. 105010)
- Graduate Diploma Property, Deakin
- Bachelor of Commerce, Murdoch (Management and Business Law)

Tadgh O'Brien
Areas of Expertise
- Mixed Farming Valuations
- Broadacre Dryland Valuations
- Broadacre Irrigation Valuations
- Rural Lifestyle Valuations
- Valuations for mortgage security purposes
- Valuations for pre-purchase/pre-sale advice purposes
- Valuations for market value
Industry Experience
Tadgh came on board with Opteon as an agribusiness/rural specialist valuer servicing central and western New South Wales. He has been exposed to a broad range of valuation types and asset classes throughout New South Wales with a focus on rural and residential property. Tadgh is an Associate of the Australian Property Institute, and a Certified Practicing Valuer. He comes from an agricultural background and was in Agri-finance prior to coming into valuation. Tadgh focuses on agribusiness/rural valuations for mortgage and market value purposes for a broad range of clients.
Formal Qualifications
- Associate Member of the Australian Property Institute (API Member No. 106439)
- Certified Practising Valuer
- Graduate Diploma of Property - Deakin University
- Bachelor of Business - University of New England

Taila Manzone
Areas of Expertise
- Commercial property valuations
- Residential property valuations
- Valuations for mortgage security purposes
- Valuations for mortgagee in possession purposes
- Tax Depreciation Schedules
Industry Experience
Taila has been working with Opteon for over four years across a number of different departments providing a broad knowledge of the entire valuation process. Taila is considered a commercial property expert and provides a large number of valuations for commercial property within Perth’s Metro Areas.
Formal Qualifications
- Associate Member of the Australian Property Institute (API Member No. 86428)
- Certified Practising Valuer
- Bachelor of Property Development and Valuation– Curtin University

Tomhas Curtin
Areas of Expertise
- Market Analysis
- Commercial Advisory
- Sales Analysis
- Argus Estate Master Development Feasibility
Industry Experience
Tomhas currently partakes in the commercial valuation, market research, commercial advisory & sales analysis. Reporting to a team of Directors & Senior Valuers; Tomhas provides end to end support with all types of asset classes spanning across Residential, Industrial, Retail & Office. Tomhas looks forward to further specialising in commercial office and residential development.
Throughout his time at Opteon, Tomhas has worked on several large scale and specialised projects such as commercial office buildings, childcare facilities, residential developments & subdivisions. Having recently graduated from the University of Technology Sydney, Tomhas has utilised his knowledge of programs such as Argus Estate Master to assist with the valuation of various specialised assets.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API Member No. 109196)
- Bachelor of Property Economics (2019) – Sub major in Planning

Nick Walls
Areas of Expertise
- Commercial and Industrial valuations
- Agribusiness valuations
- Going concern valuations of trading properties
- Mortgage requirements
- Valuation for compensation purposes
- Asset valuations for financial reporting
- Family Law
- Rental valuations
Industry Experience
Nick began his valuation career valuing residential property in Perth before moving to New Zealand to develop skills in commercial and industrial valuations. On moving back to Perth, Nick worked with a small firm specialising in valuations for compensation purposes. In 2010, Nick moved to Albany, having a very active involvement in valuation of a broad range of property throughout the Great Southern Region including trading properties in the tourist and Hospitality sectors, Residential Development Land and Agribusiness. In 2017 Nick became the Managing Partner of Opteon Albany and Great Southern WA. Nick maintains local client relationships based on mutual ethics and integrity.
Formal Qualifications
- Curtin University of Technology – Bachelor of Commerce (2004)
- Associate Member of the Australian Property Institute (API Member No. 65182)
- Licensed Valuer in the State of Western Australia, License No. 44388

Michael Smith
Areas of Expertise
- Residential property valuations
- Valuations for mortgage security purposes
- Valuations for pre-purchase/pre-sale advice
- Valuations for property taxation
- Valuations for financial reporting purposes
- Rental valuations
Industry Experience
Michael commenced with Opteon in April 2014 as a trainee and throughout his time has worked in both the commercial and residential teams servicing a broad range of clients in commercial, industrial and residential property throughout the ACT and surrounding regions. Michael served on the Australian Property Institutes Young Property Professionals committee for approximately 3 years where he was able to join a wide network of property professionals which continues to help enable Michael to service Opteons clients.
Formal Qualifications
- Associate member of the Australian Property Institute API Member No. 84303
- Certified Practising Valuer
- Bachelor of Business and Commerce (Property) – Western Sydney University

David Gates
Areas of Expertise
- Retail, Commercial and Industrial Property
- Specialised Property (Home Parks, Motels and Service Stations)
- Development sites
- Residential Subdivision Development
- Commercial and Mixed Use Development
- Cashflow and Feasibility Analysis
- Specialist Retail Valuation including Market Rental Assessments
- Lessee and Lessor Representation
- Strata Replacement Insurance Valuations
- Valuations for Financial Reporting
- Land Value Assessments for Rating and Taxing
- Portfolio Valuations for Local and NSW Government
Industry Experience
David started his career in 1998 in Brisbane. He joined Urbis in 2000 as a Commercial Valuer and then QIC from 2004 where he worked as an Analyst on the redevelopment of CBD commercial property and major regional shopping centres. David relocated to the North Coast of New South Wales in 2010 as a Senior Commercial Valuer focusing on commercial property, going concerns and residential subdivisions.
David joined Opteon (North Coast NSW) in 2015 and became partner in 2016. He has a strong background in retail, commercial and industrial property, going concerns and both residential and commercial development.
Formal Qualifications
- Associate of the Australian Property Institute
- Bachelor of Applied Science (Property Economics)
- Specialist Retail Valuer NSW
- API CPD Compliance
- API Risk Management Compliance

David McKenzie
Areas of Expertise
- Expert witness in respect to the Timbercorp Almonds matter, involving water valuations of hundreds of millions of dollars (SCI 2009 – 10699)
- Recent valuation of 25 Gl of unregulated flows in Victoria for the Department of Treasury & Finance
- Irrigated holdings – dairy, horticulture, and cropping, in New South Wales and Victoria over 30 years, for a wide range of clients and purposes
Industry Experience
Qualified since 1991, David trained with the Victorian Valuer General, and has practiced in northern Victoria for over 30 years. He was instrumental in the inception, design and delivery of the API Specialist Water Valuer Accreditation. He has addressed several national and international conferences in relation to interpretation of water markets.
An agriculture supply-chain valuation specialist, David has particular expertise in relation to irrigation properties including dairies, orchards, vineyards, and intensive animal enterprises. He has valued major cool storage complexes, fruit packing and grading developments, glasshouses and multiple specialised going concern enterprises. He is an experienced expert witness, having given evidence in major litigation matters, in several jurisdictions, including the Victorian Supreme Court.
David has a deep understanding of rural economies and the water sector. He currently serves as a Director of Goulburn Murray Water, and has served several terms as Chair of North East Water, and as a Director of Goulburn Valley Water. He is co-Chair of the influential Water Policy think tank the GMID Water Leadership Forum and served on several State & Federal government regional development and water taskforces, panels and committees.
Formal Qualifications
- B. Bus (Property) - RMIT University
- Associate Member of the Australian Property Institute (API Member No. 62435)
- Accredited Specialist Water Valuer
- Accredited Specialist Retail Valuer
- Certified Practising Valuer
- Award for Meritorious Service to the Australian Property Institute, 2015

James Brennan
Areas of Expertise
- Expert witness
- Consultancy advice
- Market presentations
- Residential Valuations
- Industrial Valuations
- Rental Assessments
- Business Management
- Client Relations
Industry Experience
Jim has over 25 years’ experience in undertaking property valuation in Australia, and an additional 5 years' experience in banking. Prior to becoming Managing Director of Opteon ACT, Jim has worked for other national valuation practices as Managing Director, Valuations Manager and Senior Valuer. The majority of Jim’s career was developed in the ACT. Jim specialises in residential, commercial and industrial valuations as well as providing consultancy advice.
Formal Qualifications
- Associate of the Australian Property Institute
- Certified Practicing Valuer
- Associate Diploma in Valuation

James Flanagan
Areas of Expertise
- Market Value Assessments
- Banking and Finance Valuations
- Matrimonial and Family Court Valuations
- Taxation (Stamp Duty, Capital Gains & GST)
- Replacement Insurance Value Assessments
- Acquisition & Disposal Advice
- Commercial office/retail and Industrial
- Depreciation Schedules
- Residential/Prestige Residential
- Rural Land and Lifestyle
- Sub divisional Land
Industry Experience
James Flanagan is a partner/director in the firm Opteon (Mid North Coast NSW) Pty Ltd, a valuation firm which specialises in providing valuation services to our many corporate, legal and private clients. The firm has been established in Port Macquarie since 1991.
A lifetime resident of the Port Macquarie Hastings area with a strong rural background, James gained experience in the fields of banking, finance and real estate before joining Jeffrey Reid Flanagan Valuations in 1999. Since commencing work as a valuer James has prepared valuation reports on all classes of property throughout the Mid North Coast area. James has also previously held the position of Chairman of the Australian Property Institute Mid North Coast study group.
Formal Qualifications
- Associate of the Australian Property Institute (Certified Practising Valuer)
- API Member No. 68390
- 29 years’ experience in the Property Industry

Malcolm Reid
Areas of Expertise
- Agricultural properties.
- Valuation of pastoral and irrigated rural holdings in Southern NSW. Farm valuations are regularly carried out predominantly for three large financial institutions and a number of large overseas and corporate based clients.
- Valuation of surface and ground water entitlements throughout the Murrumbidgee Valley.
- Consultancy for government agencies including Land Value Objections in various Southern NSW locations on behalf of NSW Land and Property Information (LPI). Negotiations, acquisitions, project management for statutory authorities.
- Purchase, lease and sale negotiations and rural feasibility assessments.
- The preparation of rural based Tax Depreciation Schedules for private clients.
- Large scale valuations include the Garangula Aggregation at Harden NSW – a 9,000-hectare showpiece rural property with significant infrastructure currently owned by Romani Pastoral Company.
Industry Experience
2010-Current: Director, Opteon (Southern Inland NSW)
2005-2010: Valuer, Bolton Connolly Opteon
1996-2005:AWB Landmark – Wool buyer/broker, Southern NSW
1994-1995: Lempriere (Aust) – Wool buyer
1993-1992: Twynam Pastoral Co (Mungadal, Hay NSW)
1989-1992: Clark & Trait Pastoral Co (Barcaldine Downs, Barcaldine QLD)
Formal Qualifications
- Associate Member of the Australian Property Institute (API Member No. 70196) (2008)
- Registered Valuer in New South Wales No. 7299 (2005)
- Graduate Diploma Property Development (UTS) (2009)
- Advanced Diploma Property (Valuation) (2005)
- Certified Practising Valuer

Martin Tremain
Formal Qualifications
- Fellow of Australian Property Institute (FAPI)
- Certified Practising Valuer
- Registered Valuer NSWNo. 2362
- Registered Valuer QLD No 2057
- Member of Agriculture Institute of Australia,
- Certified Practising Agriculturist (CPAg)
- Diploma of Business (Valuation) – Hawkesbury Agriculture College
- Associate Diploma of Farm management –
- University of New England
- Professional Certificate in Plant and Machinery
- Valuation – University of Technology Sydney
Industry Experience
Martin has 36 years’ experience in the Australian property industry with significant experience across a very broad range of property types.
With a farming background and a professional education in valuation and agriculture,Martin specialises in the valuation of all categories of rural properties including: broadacre dryland and irrigated farming, mixed grazing properties, diverse range of intensive livestock properties, range of horticultural properties and agricultural processing properties including grain and fibre. The valuation of corporate scale rural holdings and portfolios is a long-term specialty service for both national and international clients.
In addition to Agriculture, significant experience in the valuation of commercial and industrial properties including specialised going concern properties.
Martin also provides valuation of Plant and Machinery and in particular Agriculture equipment and Agriculture Processing plants. Non valuation consultancy services include general agribusiness plus acquisition and divestment roles with large scale transport and logistic infrastructure projects.
Areas of Expertise
- Valuation of cotton properties across NSW and QLD
- Broadacre cropping and large-scale grazing properties
- Intensive livestock properties including cattle feedlots and poultry
- Horticulture/vineyards/wineries
- Agriculture processing and storage facilities
- Plant and equipment valuations
- Property and general agribusiness consulting
- Statutory valuation advice
- Asset valuations for financial reporting
- Compensation assessments
- Litigation matters and expert witness
- Acquisitions
- Specialised commercial, industrial and going concerns
- Non valuation consulting services including acquisition and divestment
- roles on state and national infrastructure projects

Matthew Tall
Areas of Expertise
- Mortgage valuations for lending institutions
- Strata Replacement Insurance valuations
- Development Site Valuations
- Pre-sale and pre-purchase valuations
- Valuations for tax implications
- SMSF valuations
- Specialist Retail Valuer for Retail Rent Determinations and Reviews
- Expert Witness in the Supreme Court, Federal Magistrates Court and Family Court
- Mass Valuations for NSW Government entities
- Valuations for Local Government and NSW Government entities
- Financial Reporting valuations
Industry Experience
Matthew Tall has a broad knowledge of real estate markets beginning his career in 1991 as manager of residential, commercial, and industrial investment properties in Western Sydney before making the move to Byron Bay on the NSW far north coast in 1997.
He commenced his valuation career in 2002 joining a small firm which is now known as Opteon (North Coast NSW) in 2004 and becoming partner in 2008. Matthew has gained extensive valuation experience in a wide range of regional property types and markets including residential, rural/rural lifestyle, agribusiness (macadamia nut orchards, sugar cane and tea tree plantations), commercial and industrial properties, development sites, motels, bed and breakfast establishments and backpacker hostels.
Formal Qualifications- Associate Australian Property Institute
- Associate Diploma of Business (Val)
- API CPD Compliance
- API Risk Management Compliance

Michael Reid
Areas of Expertise
- Market Value Assessments
- Banking and Finance Valuations
- Matrimonial and Family Court Valuations
- Taxation (Stamp Duty, Capital Gains & GST)
- Replacement Insurance Value Assessments
- Acquisition & Disposal Advice
- Commercial office/retail and Industrial
- Depreciation Schedules
- Residential/Prestige Residential
- Rural Land and Lifestyle
Industry Experience
Michael Reid is a Partner/Director of Opteon (Mid North Coast NSW) Pty Ltd, a valuation firm which specialises in providing valuation services to our many corporate, legal and private clients. The firm has been established in Port Macquarie since 1991.
In 1987 Michael commenced his valuation experience in the Canberra/Southern Highlands region where he also operated a real estate and stock and station agency. In 1988 Michael moved to Mid North Coast NSW commencing work for Alan Jeffrey & Associates. Michael then became a partner in 1991 to form Jeffrey & Reid Valuations and subsequently Jeffrey Reid Flanagan Valuations. After joining with Opteon Property Group, they are now known as Opteon (Mid North Coast NSW) Pty Ltd.
Formal Qualifications
- Associate Member of the Australian Property Institute (API Member No. 68895)
- Certified Practising Valuer
- Registered in Feb 1987 and admitted into the Australian Institute of Valuers in June 1988

Stuart Prowse
Industry Experience
Stuart has more than 30 years’ experience in undertaking property valuation in Australia. With a background and professional education in Agriculture, Stuart specialises in valuations for broadacre, dryland and irrigated cropping and grazing properties, diverse horticultural enterprises as well as Agriculture Processing and Storage Facilities.
In addition to valuation of Agricultural land, Stuart has a strong background in providing advice on a broad range of Commercial and Industrial property including Going
Concern property in the hospitality sector. As a Senior Valuer, Stuart provides statutory valuation advice, this includes the provision of rating and taxing valuations, objection briefing services and parallel valuations for NSW Government.
Formal Qualifications
- Vice President NSW Division Australian Property Institute 2003-2006
- Fellow of Australian Property Institute (API Member No. 68127)
- Certified Practising Valuer
- Registered Valuer NSW No. 2702
- Registered Valuer QLD No. 1894
- Member of Australasian Association of Agriculture Consultants (CPAg.)
- Associate Diploma in Farm Management - University of New England
- Bachelor of Business (Real Property Valuation and Administration) - Queensland Agriculture College

Simon Toyer
Areas of Expertise
- Market Value Assessments
- Residential Development
- Taxation (Stamp Duty, Capital Gains & GST)
- Replacement Insurance Value Assessments
- Public Open Space Valuations
- Acquisition & Disposal Advice
Industry Experience
Simon has 10 years’ experience in the property valuation industry in Australia. A rural upbringing in Bathurst and completion of studies at Hawkesbury Agricultural College has provided Simon a solid platform to hone his skills as a specialised Valuer undertaking a wide variety of rural, commercial, and residential property valuations. During his 10 years of valuing with Opteon (Northern Inland NSW), Simon has undertaken valuations ranging from prestige residential properties to large scale commercial development projects, including retail centres, industrial warehouses and going concern motels and hotels.
Simon regularly provides valuations for a number of statutory authorities and government departments whilst his experience in rural property valuation incorporates small scale equine operations, hobby farms, grain storage, and grazing properties across the New England/North West and Upper Hunter regions of New South Wales.
Formal Qualifications
- Associate Member of the Australian Property Institute (API Member No. 70047) (2008)
- Certified Practising Valuer
- Bachelor of Business & Commerce – University of Western Sydney

Peter Old
Areas of Expertise
- Agribusiness
- Broadacre Farming & Irrigated Land
- Organic Agribusiness
- Grazing (Beef and Sheep)
- Grazing (Wool production)
- Equine – Horse Studs and Facilities.
- Poultry Industry – Broiler, Egg and Pulp Operations
- Horticulture – Small Cropping and Orchards
- Intensive Horticulture
- Asset Valuations for Financial Reporting
- Commercial Office/Retail, Industrial
- Compensation Assessments
- Residential
Industry Experience
- 20 years’ experience as a property owner in Broadacre Farming (both dryland and irrigation), Animal husbandry (New South Wales).
- International agricultural experience in broadacre cropping and animal husbandry-Montana USA.
- Certified Organic Grower (NASAA) 1991-2002, both grain and lamb production.
- Guest speaker at NSW Agriculture Conference (2001- Organic lamb production).
- Past member of Merino Breeders Association.
- Registered Woolclasser – 30 years.
- Certified Artificial Insemination in Cattle.
- Employed as a Registered Valuer by Opteon (Central and Southern QLD) Pty Ltd, Toowoomba (2007 to present)
- Relevant valuation experience includes residential, multi-unit, rural residential, rural valuations (Dryland and Irrigation, Horticultural, Grazing, Water Transfer and Broiler Farms) for an extensive group of clients across the Lockyer Valley, Darling Downs, South Burnett, Goondiwindi, Western and Southern Downs Regions and Maranoa Regional Council.
Formal Qualifications
- Attended Agricultural High School (YAHS-NSW)
- Graduate Farm Technology (Albury Technical College)
- Bachelor of Property (Central Queensland University)
- Associate Member of the Australian Property Institute (API Member No. 67025)
- Certified Practising Valuer (Registration No 3378) - Since 25/01/2010

Matt Munro
Areas of Expertise
- Residential property valuations
- Commercial, retail and industrial valuations
- Agribusiness valuations
- Specialised agribusiness - Horticulture/Vineyards
- Valuations for property taxation, legislation, and policy purposes
- Pre-purchase / Pre-sale advice
- Rating and Taxing Valuation Objections and Appeals
- Rental valuations
- Family Law
- Asset valuations for financial reporting purposes
- Acquisition
- Prestige Residential
Industry Experience
Matthew has over 21 years’ experience as a valuer and has been employed by Opteon since 2021, as a Senior Property Valuer and Officer Manager. He has provided expert advice in this time across varying asset types and locations across New South Wales.
Matthew is appointed manager of Opteon Coffs Coast office, managing a team specialising in residential, rural lifestyle, medium residential development, expert witness/family law, pre-purchase advice, prestige residential, commercial, retail, industrial and agribusiness and many more. Matthew regularly provides reports to major lenders for first mortgage lending purposes, solicitors for family law purposes, and accountants for taxation purposes as well as advice reports for Government Clients.
Formal Qualifications
- Associate Member of the Australian Property Institute (API Member No. 68479)
- Certified Practising Valuer
- Bachelor of Business (Land Economics)

Samuel Palmer
Areas of Expertise
- Market Value Assessments
- Rural, Office, Industrial, Retail and Residential valuations for acquisition, disposal, stamp duty, family law, rental advice, and mortgage purposes
- Valuation work carried out on behalf of the RMS, State Property Authority, Land and Property Information, Defence Housing Australia, Housing NSW, Wagga Wagga City Council, ANZ, NAB, Westpac, St George, CBA, Property Fund Managers and private owners and developers
- Development feasibility studies
- Tax depreciation
- Rental determinations
Industry Experience
Sam has been working within property valuations since completing his degree at the University of Western Sydney in 2012. He worked throughout Sydney for 2 years valuing high end industrial property before moving back home to Wagga Wagga where he has worked across all property valuation fields throughout the Riverina and Southern NSW.
Formal Qualifications
- Associate Member of the Australian Property Institute (API Member No. 78311)
- Certified Practising Valuer
- Royal Institute of Chartered Surveyors (RICS) – 6905399
- Bachelor of Business & Commerce (Property)

Calvin Rogers
Areas of Expertise
- Management of Government Projects
- Residential, Commercial, Industrial, Tourism & Special Purpose Valuations
- Rental Determination Matters
- Litigation Valuation acting as an Expert Witness
- Diversified Property Services
- Portfolio Projects
Industry Experience
Calvin has worked in the property industry for the past 15+ years throughout Australia and New Zealand in both metropolitan and regional areas.
His experience includes valuation, consultancy, business development and management. Calvin specialises in government projects, specialised commercial and diversified property services.
Formal Qualifications
- Bachelor of Commerce – University of Sydney (2001)
- Masters of Property Development – UTS (2005)
- Registered Real Estate Valuer No 23145
- Advance Diploma of Property Valuation (2010)
- Member of API (Associate & CPV)

Fran Moore
Areas of Expertise
- Engaged in all facets of independent property valuations including residential, commercial, and industrial properties.
- Undertaking tax depreciation schedules and insurance replacements costs reports
- Responsible for portfolio valuations - e.g., Department of Housing – Asset Valuations
Industry Experience
Fran has been working at Opteon for approximately 2 years. She is based in regional North – West Queensland and has been a certified practising valuer in this area since 2007. She specialises in residential valuations and large valuation tenders. She also has experience in commercial and industrial property valuations.
Formal Qualifications
- Associate Member of the Australian Property Institute (API Member No. 66282)
- Certified Practising Valuer
- Bachelor of Property and Real Estate – University of QLD
- QLD Registered Valuer (QVRB No: 5065)

David Paterson
Areas of Expertise
- Residential and Prestige Residential
- Rural Lifestyle
- Central Business District Office and Retail
- Industrial
- Depreciation Schedules
- Property Taxation, Legislation and Policy
- Rental Assessment of Commercial and Residential
- Acquisition and Resumption
Industry Experience
David has over 10 years’ experience in the Property Industry. His experience includes residential, multi-unit, rural residential, commercial/retail, industrial, acquisition and resumption and rental valuations for an extensive range of clients across the Darling Downs, Lockyer Valley, Southern Downs, South Burnett, Western Downs, Maranoa, Goondiwindi and Somerset regions.
Formal Qualifications
- Associate Member of the Australian Property Institute (API Member No. 102244)
- Certified Practising Valuer
- Registered Queensland Property Valuer QVRB No: 4023
- Bachelor of Property – Central Queensland University

Vincent Graham
Areas of Expertise
Valuation of most classes of property in New South Wales specialising in commercial, industrial and large scale rural properties. Farm valuations are regularly carried out for a number of large overseas and corporate based clients.
Acquisition and Just Terms (Compensation) valuations for the Land & Property Information, Roads and Maritime Services, Local Shires Councils, NSW Forestry, Essential Energy and TransGrid. Negotiations, acquisitions, project management for statutory authorities. Purchase, lease and sale negotiations and rural feasibility assessments. Family Law and Litigation valuations for Family Law Court of Australia and the Supreme Court of Australia. Valuation of Water Entitlements. Broad rural background including being an owner-operator of a small mixed farming and grazing property near Wagga Wagga.
Industry Experience
2002 to date: Director Opteon (Southern Inland NSW)
1989 - 2002: Employee and associate with Bolton Connolly, Wagga Wagga.
1985 – 1989: Employed with the State Bank of NSW, Valuation & Rural Advisory Department, Bathurst, Parkes, Dubbo and Wagga Wagga.
1983 - 1984: Assistant Valuer with Barry L. Russ & Associates, Sydney.
Formal Qualifications
- Associate Diploma (Farm Management) (1988).
- Associate of the Australian Property Institute (1987).
- Diploma of Business (Valuation) (1982).
- Registered valuer in New South Wales No. 2384.
- Certified Practising Valuer.
- Consultancy for government agencies including Land Value Objections in various Southern NSW locations on behalf of NSW Land and Property Information (LPI)
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