Imagine signing a pre-construction condo agreement at $900,000 during a hot market, waiting three years for the building to complete, and then getting a call from your mortgage broker weeks before closing: the bank’s appraisal came in at $740,000 and you need to come up with an extra $130,000 in cash — immediately. This scenario has played out repeatedly across the Greater Toronto Area, and the mechanism behind it is called a blanket appraisal. It’s one of the least-discussed risks in Ontario real estate, and one of the most financially damaging.
This is fundamentally different from a standard appraisal, where an appraiser physically inspects or thoroughly analyses a specific unit and produces a valuation unique to that property.
The blanket approach solves the bank’s operational problem efficiently — one appraiser, one report, hundreds of units processed at once. But it transfers significant risk onto the buyer, particularly when market conditions shift between the purchase date and the closing date.
In 2025–2026, Canada’s banking regulator OSFI (Office of the Superintendent of Financial Institutions) formally warned major lenders about the use of blanket appraisals during the condo market downturn. OSFI’s concern: blanket appraisals based on original purchase prices — rather than current market values — could result in uninsured mortgages exceeding 80% of actual market value, a potential breach of the Bank Act. This regulatory intervention confirms that blanket appraisals are not a fringe issue — they represent a structural vulnerability in how pre-construction financing works in Canada.
Don’t wait for the builder’s closing notice. Proactively connect with your mortgage broker to understand your lender’s appraisal policy for the specific development and lock in your rate hold early.
When calculating affordability for a pre-construction purchase, do not plan your down payment to the minimum. Hold an additional 10–15% of the purchase price in liquid assets as a contingency against appraisal gaps.
When your broker submits your application, ask: “Will this lender use a blanket appraisal for this project?” Some lenders — particularly credit unions and alternative lenders — may be more willing to perform individual assessments or use more current market data.
Keep records of your upgrade package receipts, floor plan specifications, and your unit’s floor and orientation. If you need to challenge a blanket appraisal, this documentation supports your case for a higher individual valuation.
While blanket appraisals are most common in new condo developments, they can also appear in large townhouse projects, portfolio refinancing scenarios, and situations where a lender is processing multiple similar properties simultaneously. If you’re ever in any transaction involving a development project — even as a resale buyer in a newer building — it’s worth asking your broker whether the lender has any blanket appraisal practices in place for that building.
Blanket appraisals represent one of the clearest examples of why working with an experienced broker matters in pre-construction real estate. The risks are real, they are systemic, and they are almost never disclosed in the developer’s sales pitch. My job is to walk you through these scenarios before you sign — not after the closing date is already set. If you’re holding a pre-construction agreement and are approaching your closing window, reach out. Let’s make sure your financing is solid before the builder calls.
Pre-Construction Risk
Ontario Condo Closing
Appraisal Gap
OSFI Regulation
Mortgage Financing
Toronto Condo Market
Individual Appraisal
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