Low Appraisal After a Firm Offer in Ontario: Who Covers the Gap?

Step 1: Understand the core rule — lenders fund the LOWER of price or appraised value

This is the root of everything. Many buyers assume “I negotiated $1M, so the bank lends me 80% of $1M.” Wrong. The lender doesn’t fund what you agreed to pay — it funds what the home is worth in its eyes.

• The “lesser of” rule. According to CMHC, the loan amount (and any mortgage insurance) is calculated on the lower of the purchase price and the market/appraised value.
• Who decides “worth.” The lender orders an independent licensed appraiser, who produces an appraised value. That figure — not your agreed price — governs the math.
• The gap = price − appraised value. The lender will fund zero of that gap, because it exceeds the home’s value in the lender’s eyes. That money comes out of your pocket, in cash.

Hold onto one sentence: the bank lends against the appraisal, not against your offer. The difference is your problem to solve.

Step 2: How big is the shortfall, really — a worked example

Buyers routinely underestimate the damage, because the gap doesn’t just appear — it lands on top of your existing down payment. Let’s run the numbers:

• Purchase price: $1,000,000; you planned 20% down, i.e. $200,000, with an $800,000 mortgage.
• The appraisal comes in at $950,000.
• The lender funds against $950,000, so it lends at most $950,000 × 80% = $760,000.
• Cash you now need = $1,000,000 price − $760,000 loan = $240,000.

In other words, your down payment jumps from $200,000 to $240,000 — an extra $40,000 in cash you weren’t planning for. (At a 20%-down scenario, the full $50,000 appraisal gap ultimately comes out of your pocket.) If you were already stretched to the 20% line with no reserve, a $50,000 gap can collapse a firm deal on the spot.

Step 3: Buyers with less than 20% down are even more exposed — insurance uses the lower value too

If you’re putting down less than 20% and need high-ratio mortgage insurance (CMHC and the others), a low appraisal hits harder. According to CMHC, the minimum down payment is 5% on the first $500,000 plus 10% on the portion above that, up to a maximum 95% loan-to-value — and that ratio is also calculated on the lower of price and appraised value.

• When the appraisal drops, the insurable loan amount drops with it. You don’t just cover the gap — you may have to top your down payment back up to the required ratio, or the insured loan won’t be approved at all.
• The 2024 federal reforms raised the insurable price cap to $1.5 million and extended 30-year amortizations to first-time buyers, but the underlying “lesser of” rule did not change.

Bottom line: the thinner your down payment and the closer you sit to the 95% line, the larger the share of cash you’re forced to find when an appraisal comes in low — and the smaller your cushion.

Step 4: Why appraisals come in low — especially in bidding wars and cooling markets

A low appraisal usually isn’t the appraiser having it in for you. It’s typically one of these — and several are especially common in specific GTA conditions:

• A bidding war pushed the price up. Multiple buyers competing can drive the price to an “emotional” number rather than a comparable-supported one. Appraisers rely on recent comparable sales (comps); the amount you bid above the comps won’t be recognized.
• A cooling or declining market. If you signed in a hot market but the appraisal happens weeks later in a softer one, comparable sales have drifted down and the appraisal can’t keep up with your agreed price.
• Thin comparables. A unique layout, a fresh renovation, or an unusual location with no recent comparable sales nearby forces the appraiser to value conservatively.
• Pre-construction at final closing. If you signed a pre-construction price two or three years ago and the market has since pulled back, the appraisal at closing can land below your original contract price — a trap many pre-construction buyers have hit in recent years.

The best defense happens before you sign. Once your offer goes firm, your options shrink fast. Here’s my practical checklist for buyers:

• Financing condition. Keep a condition period that makes the offer contingent on securing your mortgage. If a low appraisal means the lender won’t approve the loan amount you need, you can walk away legally within the condition period and recover your deposit. In a bidding war this is the first thing a seller asks you to drop — think hard about the consequences before you do.
• Appraisal condition. More directly, make the offer contingent on the home appraising at no less than the purchase price. Worth fighting for on higher-risk homes (heavily contested, thin comps).
• Pre-approval plus a comp check. Before you offer, have your mortgage broker assess whether the appraisal can support your price at that level, so you walk in with eyes open.
• Build a gap cushion. If you’re determined to drop conditions to win, set aside accessible cash specifically to cover a possible appraisal shortfall. Don’t stretch your down payment to the last dollar.

If the deal is done — the offer is firm and the appraisal really is low — here are your paths, roughly from most to least viable:

• Cover the gap in cash. The most direct route, if you have the money. This is exactly why Step 5 says to keep a cushion.
• Dispute or request a reconsideration. If you believe the appraiser missed higher recent comps or overlooked a renovation, you can submit supporting comparables through your lender and request a reconsideration of value. Success depends on whether you genuinely have stronger evidence — it’s not guaranteed.
• Switch lenders or get a new appraisal. Different lenders use different appraisers and methodologies; sometimes another lender or a fresh appraisal lands closer to your price. Watch the calendar — it has to finish before closing.
• Ask the seller to lower the price. Use the appraisal report to ask the seller to drop to the appraised value. But you’re firm and have no contractual exit, so the seller has no obligation to help — it comes down to their willingness and the market.
• Supplemental financing. Where the gap is modest and your finances allow, a second mortgage or private financing is a last bridge — costly, for backstop only. Run the full cost first.

If the price is $1,000,000 and it appraises at $950,000, exactly how much extra cash do I need?

The lender caps your mortgage on the $950,000 appraised value. At 80% financing that's a maximum loan of $760,000, so the cash you need to close is $1,000,000 − $760,000 = $240,000 — $40,000 more than your planned $200,000 down payment. The full $50,000 appraisal gap ultimately comes out of your cash. The closer you are to the 20% line with no reserve, the more dangerous it is.

I signed a firm offer — can a low appraisal let me walk away and recover my deposit?

Usually no. A firm (unconditional) offer has no financing or appraisal condition as an exit, so a low appraisal isn't a legal reason to back out. If you can't fund the gap and close on time, the seller can generally keep your deposit and may sue for further damages. To preserve an exit, you must build a financing or appraisal condition into the offer before you sign.

Why does the appraisal come in below the price I negotiated?

Most often a bidding war pushed the price above recent comparable sales (comps), and the appraiser only credits comps; or the market cooled after you signed and comparables drifted down. A unique layout, a lack of recent comparable sales, or a pre-construction unit closing into a softer market can all leave the appraisal below the price. All of these are common in GTA bidding wars and cooling conditions.

Can I dispute a low appraisal or get a new one?

You can try. If you believe the appraiser missed higher recent comps or undervalued a renovation, you can submit supporting evidence through your lender and request a reconsideration of value; different lenders also use different appraisers and methodologies, so switching can sometimes land closer to your price. Neither is guaranteed, and both need enough time to finish before closing.

In a bidding war, should I drop my financing condition to win the home?

If you don't have enough cash to backstop an appraisal gap, dropping the condition is high-risk. If you still want to compete, do two things: have your mortgage broker assess in advance whether the appraisal will support the price, and set aside accessible cash specifically for a possible gap — don't stretch your down payment to the last dollar. Weigh the potential loss (deposit plus damages) against the value of winning before you decide.