Pre-construction closing: appraisal gaps and how to plan

An appraisal gap on a pre-construction purchase is the difference between the price in your agreement and the value a lender's appraisal supports when the home is ready to close. The lender advances against the appraised value and the down payment rules, not against the price you agreed years earlier. If the appraisal is lower than the price, the gap is yours to cover with money the lender will accept, or the closing does not happen on that approval. MKG Mortgages plans for that gap with buyers across the Greater Toronto Area well before the occupancy date.

Buildings in Toronto, North York, Vaughan, Mississauga, Brampton, Oakville, and Milton are often ready years after the first deposit. Income, credit, and the way a lender reads incentives can all change. The appraisal is one of those later facts.

Why the number moves

You and the builder set a price on a future home. An appraiser later values a finished home, or a nearly finished one, against what comparable homes are selling for at that time. Those are different exercises. A rising market can hide the difference. A flat or lower market does not. The lender is not obliged to use your purchase price when the appraisal comes in underneath it.

Incentives matter. A credit for upgrades or a deposit structure can change what a lender treats as the price. Bring the agreement, every amendment, and the statement of adjustments. A file built on the first brochure, without the amendments, uses the wrong price.

Occupancy and final closing are not the same day on many condo files. Occupancy is when you can move in and start paying the builder an interim amount. Final closing is when title transfers and the mortgage actually funds. The appraisal the lender uses is tied to the funding, not to the day you picked your finishes. Ask which date your lender needs the appraisal for, and how long that appraisal stays usable.

What to line up early

Keep a closing reserve that is separate from the deposits you have already paid the builder. Deposits reduce what you still owe the builder. They do not automatically count as extra cash if the appraisal comes in short. The gap, if there is one, is new money: savings you can paper-trail, a gift with a gift letter and proof of the transfer, or secured borrowing that a lender will allow in second position. Untraceable cash is not a plan.

Keep the income file current. A job change or a move to self-employment between signing and closing can change which lender will fund. Self-employed buyers refresh the package on the self-employed mortgages page the year closing becomes real.

Read the deposit schedule on one page: what you have paid, what is still due, and what is left to pay the builder on closing day before the mortgage is applied. Then write a second number beside it, labelled as a buffer for an appraisal that does not match the price. If you cannot describe where that buffer would come from, that is the conversation to have now, while there is time to save it or to look at a co-signer.

A co-signer goes on the mortgage and is underwritten. Talk to them before the builder's lawyer sends a short closing clock. A pre-approval from the year you signed has usually expired. The live file is the one a lender issues when the closing notice arrives.

Ways people cover a gap

There is no single fix, and none of these is promised.

Extra cash at closing is the cleanest. It has to be documented the same way as any other down payment. A gift from family works when the gift letter, the donor's account, and the transfer into your account or the lawyer's trust account all match.

A different lender sometimes reads the property or the income differently. Shopping the file is reasonable. It still depends on an appraisal and an approval. Starting that shop the week funds are due is late.

A second mortgage or a private advance can bridge a gap when the first mortgage will not cover the contract price and you have a credible way to pay the second out. Fees, the higher cost, and the exit are written down first. That product is explained on second and private mortgages. It is a bridge, not a way around the value of the home.

Assigning the contract, where the agreement allows it, is a question for your lawyer and the builder. MKG Mortgages does not assign contracts.

Illustrative example

Illustrative example. A buyer signed for a condo in Toronto three years ago. Deposits have been paid on schedule. The occupancy notice arrives, and the lender's appraisal supports less than the agreement price. The difference is the gap. The buyer covers part of it with savings that have been sitting in one account for months, and the paper trail is the statements. They do not cover the rest by breaking another registered mortgage without a payout statement, and they do not assume a private lender will appear in the last week. The file was reviewed when the building's completion window was announced, so the savings were already set aside and the income documents were current. If the appraisal had matched the price, the reserve would have been unused cash. Unused cash is a fine outcome. A shortfall on closing day is not.

The same planning applies to a townhouse in Vaughan or a new house in Brampton. HST is a separate question. Background is in the HST rebate and Toronto new builds. Your accountant or lawyer confirms the tax.

Where to start

Pre-construction files are handled across the GTA from the North York office. There is a single service page, plus the city hubs for the area the building is in:

• Pre-construction
• North York
• Toronto
• Vaughan
• Mississauga
• Brampton
• Oakville
• Milton
• Home purchase
• The HST rebate and Toronto new builds

Bring the agreement and the amendments to the first call. A mortgage conversation without the contract is a guess about a price you have already agreed.

Frequently asked questions

Does a lower appraisal cancel the purchase?

Not by itself. You still owe the builder the contract price. The appraisal limits what that lender will advance. You cover the difference, you find another approval that works, or you and your lawyer deal with the contract. Those are different conversations. Start with the lawyer if you may not be able to close.

Can the builder's incentives close the gap?

Only if a lender counts them the way you hope. Some credits reduce the price the lender uses, which can widen the gap rather than close it. Put every incentive in front of the lender before you rely on it.

When should the mortgage file be refreshed?

When you have a realistic completion window, not on the day of the interim closing. Income, down payment, and credit all get stale. A file refreshed months ahead can still be updated. A file started in the closing week often cannot.

Is an appraisal gap the same as a cost overrun?

No. A cost overrun is something you agreed to add. An appraisal gap is the lender's value coming in under the price you already agreed. You can have either, or both. Budget them as separate lines.

Who orders the appraisal?

The lender, or the appraiser the lender will accept. An appraisal you order yourself may not be the one the lender uses. Ask before you pay for a report you cannot submit.

New builds can also sit next to the 2026 HST rebates. Those rules are not one number for every buyer. The split between the first-time GST/HST rebate and Ontario's enhanced new housing rebate is in the HST note, checked against CRA on October 18, 2026. An appraisal gap and a rebate are separate cash items. Neither one is a promise that the unit will appraise at the agreement price.

Any rate or payment mentioned is illustrative and on approved credit (OAC). It is not a quote, a commitment, or a current offer.