An automated valuation model (AVM) estimates a property’s market value from recent sales, assessment records, and property characteristics instead of an in-person inspection. Canadian lenders can use an AVM to waive the full appraisal on lower-risk files, saving the borrower an appraisal fee and shortening the approval timeline by days.

Automated Valuation Model (AVM) Quick Facts

• Estimates value from data rather than a physical inspection
• Used to waive appraisals on lower-risk mortgage files
• Can save an appraisal fee of a few hundred dollars and days of processing
• Less reliable on rural, unique, or recently renovated homes
• Also called an automated appraisal, and different from a desktop appraisal

What Is an Automated Valuation Model (AVM)

An automated valuation model is software that estimates a property’s value by comparing it with recent sales of similar homes, municipal assessment records, historical transfer data and physical attributes such as lot size, age and square footage. The appraiser does not visit the property. The lender receives a value and a confidence score and decides whether that is enough to underwrite the file.

An AVM is not the same as a desktop appraisal, where a licensed appraiser reviews the file remotely and signs the opinion. An AVM has no appraiser signature and no professional liability, which is why lenders limit where it can be used.

Many Canadian lenders run an AVM at application. When the estimate is close to the purchase price or the borrower-stated value and the confidence score is high, the lender may waive the appraisal condition. If the estimate is far off or confidence is low, the lender orders a full appraisal and the file proceeds normally.

Why Automated Valuation Models Matter for Mortgages

Valuation is the denominator in every loan-to-value (LTV) calculation, so an inaccurate estimate quietly changes the loan’s risk. OSFI’s Guideline B-20 expects federally regulated lenders to manage property value risk through a reasonable, clearly defined approach in their policies, which is why AVM use is bounded rather than universal.

For borrowers, the benefit is immediate. Waiving an appraisal removes a fee, often saving a few hundred dollars, and a scheduling step that can add days to a purchase timeline, which matters when a financing condition has a firm deadline. Our guide to home appraisal costs and considerations explains what a full appraisal involves.

The trade-off appears on properties the data does not describe well. A home with a finished basement apartment, a recent gut renovation, or an acreage with outbuildings can be badly misread by a model working from assessment records, and a low estimate can push a file over its LTV limit even when the market would pay a higher contract price.

Common Types of Property Valuation

Lenders choose among three approaches depending on risk and property type.

Automated valuation model. Instant, free or low-cost to the borrower in most cases, and used for standard urban and suburban homes with strong comparable sales data and a conventional LTV ratio.

Drive-by appraisal. A licensed appraiser confirms the exterior condition and neighbourhood without entering the home, costing less than a full appraisal. Typically used where the model needs a check, or for the initial or secondary funding phase in some purchase plus improvements (PPI).

Full appraisal. An appraiser inspects the interior and exterior and issues a signed report. Lenders commonly require one for newly built homes, refinances, rural properties, unique homes and alternative lending, though policies differ by lender.

For example, a buyer purchasing a 12-year-old townhouse in a subdivision where 6 comparable units sold in the past year will often clear on an AVM. A buyer purchasing a century home on 5 acres with a converted barn will not, since the model has nothing meaningful to compare it against.

Common Mistakes and Misunderstandings About Automated Valuation Models

• Assuming an AVM value is the same as an appraised value
• Treating a municipal assessment as the number lenders use
• Expecting renovations to be reflected in an automated estimate
• Believing an AVM waiver applies to refinances as readily as purchases
• Thinking a low AVM result cannot be challenged with a full appraisal

Frequently Asked Questions (FAQ) About Automated Valuation Model (AVM)

Related Terms

• Appraisal
• Blanket Appraisal
• Loan-to-Value (LTV) Ratio
• Combined Loan-to-Value (CLTV)
• Home Equity
• Financing Conditions

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