Property Valuers in Dunsborough
Our Dunsborough Office
Welcome to our Dunsborough office location! Located near Geographe Bay, Dunsborough is known for its proximity to Leeuwin Naturaliste National Park and its resorts– creating numerous hospitality property opportunities. We provide industry-leading property valuation and advisory services throughout Dunsborough’s surrounding communities including Eagle Bay, Yallingup, Quindalup, Margaret River, Augusta, Busselton, Bunbury, Collie, Williams, Narrogin, Katanning, Kojonup and more.
At Opteon, we aim to provide high-quality services by connecting you with our Dunsborough-based valuers, who bring unmatched local knowledge and insights. We believe the power of our people, local expertise, and technology is the key to unlocking better and more informed property decisions.
What We Do
Property Valuation
Leverage our professionally certified valuers to assess and report on properties of various types and for different needs.
- Property Purchase and Sale
- Developments and Projects
- Estate Succession Planning
- Separation of Assets
- Insurance Renewal
- Self-Managed Super Funds
- Accounting and Taxation
- Financial Reporting
- Mortgage
Property Advisory
Work with our property advisors to empower you to make key decisions about your property assets confidently.
- Acquisition and Disposal
- Biodiversity Assessments
- Compulsory Acquisition
- Development Feasibility Assessments
- Infrastructure Projects
- Rent Reviews and Rental Determinations
- Strategic Property Advice
Quantity Surveying
Receive essential guidance and assessments from our Australian Tax Office-approved quantity surveyors.
- Building Costing Reports
- Capital Works Forecasts (Sinking Funds, Maintenance Plans)
- Financier's Initial Quantity Surveying Reports
- Historical Cost Assessments
- Insurance Replacement Cost Assessments
- Progress Inspection Reports
- Plant and Equipment
Tax Depreciation
Maximise the return on your property investments with our ATO-compliant tax depreciation specialists.
- Capital Works (Division 43)
- Plant & Equipment (Division 40)
Property Valuation
Leverage our professionally certified valuers to assess and report on properties of various types and for different needs.
- Property Purchase and Sale
- Developments and Projects
- Estate Succession Planning
- Separation of Assets
- Insurance Renewal
- Self-Managed Super Funds
- Accounting and Taxation
- Financial Reporting
- Mortgage
Property Advisory
Work with our property advisors to empower you to make key decisions about your property assets confidently.
- Acquisition and Disposal
- Biodiversity Assessments
- Compulsory Acquisition
- Development Feasibility Assessments
- Infrastructure Projects
- Rent Reviews and Rental Determinations
- Strategic Property Advice
Quantity Surveying
Receive essential guidance and assessments from our Australian Tax Office-approved quantity surveyors.
- Building Costing Reports
- Capital Works Forecasts (Sinking Funds, Maintenance Plans)
- Financier's Initial Quantity Surveying Reports
- Historical Cost Assessments
- Insurance Replacement Cost Assessments
- Progress Inspection Reports
- Plant and Equipment
Tax Depreciation
Maximise the return on your property investments with our ATO-compliant tax depreciation specialists.
- Capital Works (Division 43)
- Plant & Equipment (Division 40)
Harnessing the
Power of Our
We are a team of global innovators reshaping the valuation industry. Our story began over a decade ago in Australia. Our success has allowed us to expand across Australia and serve the New South Wales region with local experts and leading services. We empower informed property decisions through our people, technology, and processes.
Read Our Story
Our People
We have a team of more than 80 valuers that provide coverage across the NSW region and postcodes. Our experts have local knowledge in metropolitan to rural areas and experience with various property types.

Our Technology
Our technology enhances the valuation process for everyone involved with customisable, automated workflows and a centralised location to access, manage, and review 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 our valuers' human expertise and our technology's efficiency.
Our Experts

Julian Nichols
Director - Specialised & Advisory

Ray Codalonga
Director - Specialised & Advisory

Jason Du Plessis
Associate Director - Residential

Troy Pettersson
Senior Valuer

Brad Hunt
Certified Practising Valuer
The Latest News & Insights

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Reach Out
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Get in Touch
Julian Nichols
Areas of Expertise
Julian is regularly engaged to provide Expert Witness advice in property disputes including Land Aquisition/Compensation, Family Law, Will disputes and various other litigation matters. This has included giving evidence in the State Administrative Tribunal (SAT) through to the Supreme Court. At Opteon, Julian is responsible for the Agribusiness, Commercial and Residential operations throughout Regional Western Australia and Northern Territory. Julian is involved with Business and Strategic Development at Opteon.
Industry Experience
Julian joined the Valuer General’s Office in 1993 which marked the beginning of his valuation career. In 1995 he joined a private valuation firm before becoming a director of Valuation Partners WA Pty Ltd in 2000 later known as Quantia which became one of Western Australia’s largest and most experienced property valuation consultancy with extensive geographic coverage.
Julian was a founding Director of Opteon (Western Australia) and continues to work in the valuation field. In January 2017 Julian was appointed to the position of Regional Director for Western Australia and Northern Territory.
Julian currently undertakes a considerable amount of valuation and consulting advice for a number of the corporate farming interests both Australian and International that own land within the Western Australia agricultural region. This involves pre purchase advice which gives Opteon a significant involvement in current market conditions and major drivers in the market from a buyer’s perspective.
Formal Qualifications
- Bachelor of Commerce
- Master of Property
- Associate of the Australian Property Institute (AAPI) – API No: 65252
- Licensed Valuer (Qld) – QVRB No: 4091MR

Ray Codalonga
Areas of Expertise
- Asset valuations for financial reporting
- Commercial / Industrial
- Englobo / Subdivisional Land
- Rural Lifestyle
- Trading Properties
- Mortgage Requirements
- Pre-sale / pre-purchase advice
- Rental valuations
- Strategic investment property advice
Industry Experience
Ray commenced his property career with Baillieu Knight Frank in 1993, initially as a trainee commercial property manager before progressing on to being the inaugural assistant property manager at Market City, Canning Vale and then managing a portfolio of commercial, industrial and retail properties.
In August 1999, Ray commenced as a trainee valuer, still with Knight Frank and became a Licensed Property Valuer in 2001.
From 2003 to the present, Ray has been employed at Opteon, (predecessor’s Quantia and Valuation Partners WA Pty Ltd), predominately working in the fields of commercial, retail, industrial, residential subdivision, rural and specialised properties. Ray has also undertaken rental determination work.
Formal Qualifications
- Associate Member of the Australian Property Institute (2001)
- Licensed Valuer in the State of Western Australia Licence No.44028
- Bachelor of Business – Curtin University (1989)

Jason Du Plessis
Areas of Expertise
- Residential property valuations
- Valuations for mortgage security purposes
- Valuations for property taxation (Stamp Duty, Capital Gains & GST), legislation and policy purposes
- Valuations for pre-purchase / pre-sale advice
- Valuations for Federal, State and Family Courts
- Valuations for expert witness
- Valuations for government agencies
- Mass valuation modelling
- Asset valuations for financial reporting purposes
- Rental valuations
- Market valuations
- Prestige Residential Valuations
- Residential Development Valuations
- Advisory and Consultancy
- Management
Industry Experience
Jason is an enthusiastic property professional with 16 years of full-time valuation experience in predominately residential based roles, having been in a senior position within Opteon since 2012 (Senior Valuer, Managing Valuer and Associate Director roles).
Formal Qualifications
- Certified Practicing Valuer
- Associate of the Australian Property Institute – API Member No. 65365
- Licensed Valuer in the State of Western Australia – Licence No. 44449
- Masters of Property
- Bachelor of Commerce (Finance & E-Commerce)

Troy Pettersson
Areas of Expertise
- Agribusiness property valuations
- Valuations for financial reporting and advisory purposes
- Valuations for mortgage security purposes
- Valuations for various litigation purposes
- Rural leasing valuations
Industry Experience
Troy commenced his career in the valuation industry in 2015, working primarily in agribusiness and commercial valuations, based in Opteon’s South West and Perth offices. Troy has been involved in valuations of numerous types of agricultural properties, including many specialised assets such as vineyards, piggeries, poultry farms, horticultural plantations as well as broad acre farms throughout the Western Australian Wheatbelt.
Commercial properties Troy has completed valuations for include industrial properties, development sites and trading properties such as caravan parks.Troy is currently based in the South West of WA, completing both agribusiness and commercial valuations throughout the state for a wide variety of clients. Troy is an associate member of the Australian Property Institute and is a registered panel valuer with many financial institutions operating within Australia.Troy is also a member of the Opteon Youth Leadership Team, a committee of Opteon employees under 30 years of age charged with leading various research and innovation projects for the business.
Formal Qualifications
- Certified Practising Valuer
- Associate Member of the Australian Property Institute (API Member No. 83807)
- Licensed Valuer in the State of Western Australia, License No. 44977
- Bachelor of Commerce, Property Development and Valuation Major – Curtin University WA