AI Can Estimate a House Price. What Makes an Appraisal Different?

An online property estimate can be a useful starting point. Enter an address, review the result and begin thinking about what a property might sell for.

For an owner considering a move or reviewing their finances, that convenience has obvious appeal. It's quick and it's free.

The more consequential the decision, however, the more important the next question becomes: what evidence supports the number?

For property owners, lenders, lawyers and advisers, a valuation needs to address the actual property, the relevant date and the decision being made.

Technology can help organise information and identify patterns. Professional appraisal judgment connects that information to a specific valuation problem and explains the limits of the conclusion.

AI and automated estimates are related, but different

“Artificial intelligence” and “automated valuation model” (AVM) are sometimes used interchangeably. They describe different things.

The Appraisal Institute of Canada’s 2026 Canadian Uniform Standards of Professional Appraisal Practice, or CUSPAP, defines an automated valuation model as a computer program that analyzes data through automated processes. Those processes can include regression, neural networks and artificial intelligence.

An AVM therefore does not necessarily depend on the same technology as a conversational AI assistant.

For a client, the practical distinction is straightforward: a system that produces convincing text about a property has not necessarily performed a credible valuation.

Equally, an automated estimate should be assessed on its data, methodology and suitability. Not simply on whether its provider describes it as AI.

A useful first question is: what did the system actually analyze?

The property record is only the beginning

A database may identify a home’s address, age, size and previous sale. That information provides a foundation, but it may leave important questions unanswered.

Has the interior been substantially renovated?

Is there deferred maintenance?

Does the recorded floor area include space that should be treated differently?

Are there restrictions affecting access or use?

Does an advertised additional suite have the necessary approvals?

For commercial property, the questions extend to leases, recoverable expenses, tenant obligations and anticipated capital work. Two buildings with similar floor areas can produce different income and carry different risks.

These are examples of information to investigate, not claims that every automated system overlooks them. The issue is whether the particular valuation process has captured the characteristics that matter and whether those characteristics have been verified.

An inspection can help resolve physical questions, although it does not replace title research, planning confirmation or specialist advice.

Similar-looking properties may compete differently

Consider a hypothetical pair of homes in the same Vancouver Island neighbourhood.

Both have comparable floor areas and were built around the same time. One has been comprehensively updated; the other requires substantial work.

A model with accurate condition information might distinguish them effectively. A model working with outdated records might not.

Now consider two hypothetical waterfront properties. Their lot sizes may be similar, but their access, shoreline characteristics, servicing and usable land could differ substantially.

These illustrations do not establish any particular premium or discount. They show why an appraiser must investigate comparability before drawing a conclusion. Applying an unsupported “waterfront adjustment” or renovation allowance would not solve the underlying evidence problem.

Professional judgment should be supported by market evidence and explained so that a reader can follow the reasoning.

The valuation question comes first

Before comparing numbers, establish what each number is intended to represent.

Is the assignment concerned with current market value, a retrospective value at an earlier date, or insurance replacement cost? What property interest is being valued? Who will rely on the conclusion, and for what decision?

A current online estimate cannot, by itself, resolve a valuation question tied to an earlier date. Likewise, an estimate based on an assumed vacant property may not address an income-producing property subject to existing leases.

For clients, this is a practical reason to describe the intended use at the outset.

Lawyers may need evidence addressing a particular historical date.

A lender may have specific reporting requirements.

An owner may be investigating whether a proposed development or change to the property is economically feasible.

Those questions require different information and analysis.

Professional standards recognise technology and require judgment

CUSPAP 2026 expressly addresses AVMs. Where an AVM is applicable, an AIC member must determine whether it is appropriate for the assignment, ensure relevant data necessary for a credible result are not excluded, address relevant assumptions and limiting conditions, and identify the model or output used. Its guidance on AI-generated AVM output also emphasises the member’s responsibility to assess credibility.

The practical implication is that automation does not remove the need to examine the evidence.

Canada’s federal banking regulator takes a similarly risk-sensitive approach within its own mandate. OSFI’s Guideline B-20 says federally regulated residential mortgage lenders should consider valuation tools and appraisal processes appropriate to the risk. It recognises inspections, third-party appraisals and automated tools, and generally cautions against relying on a single valuation method. These are lender expectations, rather than a requirement that every owner obtain a particular type of appraisal.

Where technology can help

Our analytical view is that technology is most useful when its contribution can be checked. Potential applications include organising comparable-sale information, flagging inconsistent records, checking arithmetic and testing how changes in assumptions affect an analysis.

Each can support more efficient work, provided the underlying information and resulting interpretation are reviewed. The same principle applies to written explanations. Clear wording is valuable, but it cannot establish a fact that has not been verified. For clients, a useful question is how significant inputs were checked and how uncertainty was handled.

Questions to ask before relying on a number

Whether reviewing an online estimate or commissioning an appraisal, consider asking:

• What date and property interest does this conclusion address?

• Which property characteristics were verified?

• How were comparable transactions selected?

• What important information remains unavailable?

• What assumptions could materially change the result?

• Is the work suitable for the decision and intended users?

An online estimate can help start a conversation. A professional appraisal should provide an evidence-based explanation of the value conclusion, including its assumptions and limitations.

For Jackson & Associates Ltd., the central message is simple: confidence in a property value begins with understanding the evidence behind it.