Property Valuation Methods: Which One Values Your Property?

Your land valuation notice arrives each year. It shows a dollar figure. What it doesn't show is how the NSW Valuer General arrived at that number.

The method matters. Different approaches to valuation can produce very different results — and the method used in your suburb may be more prone to errors than others. If your valuation seems off, understanding how it was calculated is the first step toward successfully objecting.

How NSW Land Valuations Work

The NSW Valuer General values around 2.6 million properties across the state. These valuations feed into two bills: your council rates and, where applicable, land tax.

Valuations happen on an annual cycle. For most properties, the Valuer General uses mass appraisal — a computer-assisted process that applies models to entire suburbs at once, rather than individually inspecting each property.

Why Mass Appraisal Creates Errors

With 2.6 million properties, the Valuer General relies heavily on statistical models — and statistics average things out. Properties that don't fit the average carry higher risk of error.

How the Method Affects Your Objection Strategy

Knowing which method was most likely used tells you where to look for the error:

When to Use a Professional Valuer

For standard residential properties in well-established suburbs, a DIY objection using sales evidence is often sufficient.

For commercial, rural, heritage-listed, or large or complex residential properties, a registered valuer's report carries more weight. It typically costs $400–$1,200 depending on property type, but provides a professional opinion that the Valuer General must take seriously.