Appraisals and property value
The difference is not pages—it is how much of the property is directly observed
A desktop appraisal is not a cheaper version of the same inspection. It is a different scope that substitutes reliable existing data for a physical site visit and is appropriate only when the assignment and lender requirements permit that limitation.
Desktop versus full appraisal at a glance
| Dimension | Desktop | Full appraisal |
|---|---|---|
| Site visit | None | Interior and exterior inspection |
| Property evidence | Reliable existing/public/private data | Direct observation plus data/research |
| Current CUSPAP mortgage use | Restricted first-mortgage assignments meeting criteria | Broader mortgage/property use subject to scope |
| Under construction/renovation | Not permitted for desktop mortgage form assignment | Full/as-is/as-complete/progress scope may be used |
| Interior uncertainty | Higher dependence on third-party data | Directly observed at inspection |
| Speed/cost | Often lower | Typically higher |
| Lender control | Lender must accept scope | Lender must accept appraiser/report |
Current CUSPAP puts hard boundaries around mortgage desktop/drive-by use
CUSPAP 2026 requires desktop/drive-by mortgage-financing assignments to be for first mortgage financing, use reliable subject data satisfying its recency requirements and apply appropriate assumptions/limitations. They are limited to existing properties believed to be 100% complete.
A desktop report should therefore not be treated as a universal substitute for an inspection when the property is under renovation, newly/partially constructed or outside the permitted assignment conditions.
Desktop valuation shifts risk from inspection to data quality
Without entering the property, the appraiser must rely more heavily on reliable third-party/property data. If recent listing information accurately describes the interior, that can be powerful evidence. If the property has changed materially since that evidence, confidence can deteriorate.
The absence of an inspection is therefore not “no work”; it changes the evidence set and the assumptions that must be supportable.
A full appraisal is strongest when property-specific facts can change value materially
Renovations, deferred maintenance, non-standard layout, basement units, quality differences, condition concerns and unique features can require direct observation. A full inspection allows those characteristics to be described rather than inferred.
It still does not replace an engineer, home inspector, insurer or lawyer.
The borrower does not choose desktop simply to reduce the fee
The lender/insurer decides what valuation evidence is sufficient for its mortgage decision. A borrower can ask whether a lower-cost scope is available, but the lender can require a full appraisal where risk, mortgage position or property complexity warrants it.
Conversely, a lender may rely on an AVM or desktop process and not require a full appraisal even if the borrower would prefer one.
A desktop shortfall and a full-appraisal shortfall have the same first financial question
Regardless of scope, if the lender accepts a lower value, quantify the LTV and cash/proceeds effect first. A full appraisal may produce a different conclusion if additional property evidence matters, but it should not be ordered merely on the assumption that physical inspection increases value.
Use Appraisal Shortfall and Reconsideration of Value for next steps.
Both report types remain lender-specific assignments
A borrower-paid desktop or full appraisal can still be unusable if the chosen lender did not accept the appraiser, ordering channel, intended user or terms of reference. Confirm lender acceptance before commissioning the report.
Changing lenders can require permission/reliance documentation or a new report.
When each scope is more likely to fit
| Scenario | Why |
|---|---|
| Standard complete first mortgage, recent reliable data | Desktop may fit if lender accepts and CUSPAP criteria are met |
| Second mortgage/private loan | Desktop CUSPAP mortgage criteria do not fit; lender commonly needs another scope |
| Active construction/major renovation | Need full/progress/as-is/as-complete evidence |
| Interior condition materially uncertain | Inspection resolves facts remote data cannot |
| Rural/unique/low-data property | More property-specific evidence may be needed |
| Vacant/new rental where rent must be estimated | Market-rent report can be an additional assignment rather than a substitute question |
Evidence and factual governance
Sources and verification
This knowledge resource is governed by the primary or authoritative sources below. Sources were last checked on August 14, 2026. Product availability, lender policy and individual legal or tax consequences must still be confirmed for the actual transaction.
Office of the Superintendent of Financial Institutions
Guideline B-20: Residential Mortgage Underwriting Practices and Procedures
Verified August 19, 2026
Appraisal Institute of Canada
Canadian Uniform Standards of Professional Appraisal Practice (CUSPAP) 2026
Verified August 19, 2026
Appraisal Institute of Canada
For Mortgage Industry
Verified August 19, 2026