What Is My House Worth and How Do You Find Out
The typical homeowner goes into an appraisal expecting one clear answer. The reality is a range informed by market data, interpreted through judgement, and subject to variation depending on who conducts the assessment.Most people treat the question of property value as though it has a clean, retrievable answer. What produces that answer is more complex than the question itself suggests. Sellers who understand how that process works are better placed to interpret what they are told, set a realistic price, and hold their position through negotiation.
Why the Answer Is Rarely a Single Number
Property value is not a fixed figure sitting in a database somewhere waiting to be retrieved. It is built from comparable sales data, adjusted for what makes the subject property different from those sales, and shaped by the market conditions at the time of assessment.
The most common method used by agents is the comparable sales approach. Recent sales with comparable bedrooms, land size, construction, and condition are identified, and the subject property is then adjusted up or down against each one based on how it compares.
Many buyers and sellers assume a property has one correct value that a skilled professional will identify. Which sales are most comparable, how much weight each one carries, and how to adjust for specific property features are all judgement calls, and reasonable practitioners make them differently.
The volume of recent sales in an area also affects how reliable any estimate can be. High-turnover suburbs with consistent stock give agents more to work with and tend to produce tighter agreement between appraisals. In suburbs where fewer properties sell each year and stock varies significantly in age, size, and condition, the same data set can produce a wider spread of conclusions.
What Separates an Appraisal From a Formal Property Valuation
Many sellers enter the market believing that the appraisal an agent provides and the valuation a bank orders are two versions of the same exercise. They are not.
A real estate appraisal is an agent opinion of market value. It is based on comparable sales and market knowledge and is used to inform a listing price. It is provided free of charge, is not independently verified, and the agent who delivers it stands to benefit commercially from the outcome.
Where an appraisal is an opinion, a formal valuation is a regulated professional assessment with liability attached and legal standing in lending and legal contexts. Unlike an appraisal, it involves a fee, follows a structured process, and results in a formal written report.
Knowing what type of information you are working with changes how you use it - and an appraisal and a valuation are not interchangeable tools. One opens a conversation about where to list. The other closes a conversation about what a property is worth in a legally meaningful context.
If you want to understand more about how agents arrive at a property value estimate, additional information for more on what to expect from a property assessment.
Not every seller needs to commission a formal valuation before going to market. What matters is that sellers understand the type of information an appraisal represents so they can interpret it correctly and push back where the evidence does not support the number. Agents who are comfortable with detailed questions about their methodology tend to be the ones with the strongest evidence behind their estimates.
What Automated Valuation Tools Cannot Tell You
The rise of automated valuation tools means any homeowner can get a number attached to their property inside thirty seconds. What those tools cannot do is produce an estimate that reliably reflects what a buyer would actually pay on the day.
These tools draw on publicly recorded sales data and use statistical modelling to estimate value based on the property attributes held in those records. What they cannot access is interior condition, recent renovation work, presentation quality, or the specific features that make one property more or less appealing than another with identical specifications on paper.
An automated tool treating two identical-specification properties as equivalents is producing an estimate that the market would immediately disagree with. The market will treat those two properties very differently. The algorithm will not.
Used carefully, online estimates can give a homeowner a rough sense of where their suburb sits in the broader market. They are a poor substitute for a current market appraisal from an agent actively selling in the area.
How Adjustments Create the Appraisal Gap
When a seller approaches three agents for appraisals and receives three meaningfully different numbers, the natural assumption is that at least two of them must be wrong.
Same street, same house, same comparable sales - and yet three different conclusions. The instinct is to look for the error.
In most instances, all three estimates are defensible. The comparable sales do not change between the three appraisals. What changes is how each agent reads them, weights them, and adjusts for the differences between those sales and the subject property.
The first agent places significant weight on a sale from four months prior that closely matches the subject property in their assessment. Another may consider that same sale stale and prioritise more recent evidence even if it is less directly comparable. Agent C sees a specific feature of the property as a genuine point of difference and adjusts up accordingly, arriving at a higher figure than either of the others.
The gap between three appraisals is not a quality problem. It is an inherent feature of a process that requires interpretation. It is evidence that pricing property involves interpretation, not just calculation. The question worth asking is not who gave the highest number but who can most clearly explain why they chose the comparables they did and how they arrived at their adjustments.
It is a question most sellers never put to the agents they are evaluating. The sellers who ask how tend to make better pricing decisions than the ones who simply accept what they are told.
To get more context on recent property market results and what they mean for sellers, useful resource to see what the data is showing.
Frequently Asked Questions About Property Value
How do I find out what my house is worth
An agent who is currently selling in your area is the best starting point for understanding what your property is likely to achieve. That direct market knowledge - who is buying, what they are paying, and why - is what separates a current local appraisal from any other source of property value information. Online estimates provide a general range but should not be relied on for pricing decisions.
Can I trust online house price estimates
Accuracy varies between suburbs and between tools - in some markets online estimates are reasonably close to reality, in others the margin of error is significant. Suburbs with frequent sales activity and consistent property types give automated models more to work with and tend to produce more reliable estimates. Where sales are infrequent and properties differ considerably, the statistical model behind an automated estimate has less reliable data to draw from and the result shows. They are best used as a broad orientation tool rather than a pricing reference.
When should I get a property appraisal before selling
The decision to get an appraisal does not need to wait until the decision to sell is confirmed. Having a current appraisal in hand means the decision about when to sell can be made on the basis of real market information rather than assumptions about what the property might achieve. Most agents will provide an appraisal without obligation. The most informed approach is to get more than one appraisal and spend time understanding the comparable sales and reasoning each agent used to arrive at their number.
Online tools tell you what an algorithm thinks. An appraisal tells you what the market evidence shows. Only one of those is useful when you are making a decision.