Can You Back Out of a Real Estate Deal in Ontario?

Many Ontario consumers are used to the idea that a signed contract comes with some kind of grace period — a few days to reconsider before it becomes final. That expectation comes from specific consumer protection rules that apply to certain kinds of contracts, like some door-to-door sales or time-share agreements. Resale residential real estate in Ontario generally does not work this way.

Once an Agreement of Purchase and Sale (APS) becomes firm, there is generally no automatic right for either the buyer or the seller to cancel simply because they’ve changed their mind. The agreement is a binding contract, and Ontario courts treat it the same way they treat any other binding commercial agreement — the party who wants out generally needs a contractual basis to do so, not just a change of heart.

This comes as an unwelcome surprise to some buyers and sellers who assume real estate deals work like other major purchases. It is one of the most important things to understand before signing an APS, not after.

Part of the reason the law takes this approach is that real estate transactions have significant knock-on effects for the other party. A seller who accepts an offer often takes their property off the market, declines other potential buyers, and may commit to purchasing their own next home around the same closing date. A buyer who commits to a firm deal may sell their existing home, give notice on a rental, or arrange financing around that specific date. Allowing either side to cancel freely after the deal is firm would undermine the reliability both parties need to plan around a transaction of this size.

An APS is typically conditional when it is first signed, meaning it includes one or more conditions — most commonly financing and a home inspection — that give a party a defined window to confirm something before being locked in. A conditional agreement generally allows a party to walk away if a condition is not satisfied or waived within its deadline, without the consequences described below.

The agreement becomes firm once every condition has either been satisfied or formally waived in writing, usually through a specific form signed within the condition deadline. From that point forward, both the buyer and seller are generally bound to close the transaction on the agreed date, barring a further legitimate basis to exit. For more detail on how these clauses typically work, see our guide to conditions in an APS.

Backing out of a firm deal without a contractual basis carries real financial risk. The deposit paid at the time of the agreement — discussed in more depth in our guide to real estate deposits — is generally treated as being at risk of forfeiture, since most agreements credit it toward damages the other side suffers as a result of the failed closing.

Beyond the deposit, the party who fails to close can be pursued for additional damages. For a seller whose buyer fails to close, this can include the shortfall if the property eventually sells for less than the original agreed price, carrying costs like mortgage interest, property tax, utilities, and insurance incurred during the delay, and other reasonable expenses connected to the failed closing — a topic covered in detail in our guide to failing to close on a real estate deal. A buyer whose seller backs out can face a comparable claim, and in narrower circumstances may be able to seek an order requiring the sale to proceed rather than, or in addition to, damages.

These amounts can be significant, particularly in a declining market where a resale shortfall can run into the tens or hundreds of thousands of dollars. The party who suffers the loss is generally expected to take reasonable steps to mitigate it — for a seller, that typically means making a genuine effort to resell the property promptly rather than letting losses accumulate unnecessarily.

Not every exit from a real estate deal is a breach. The clearest legitimate basis is an unmet condition — if a condition in the APS genuinely was not satisfied within its deadline, and was not waived, the agreement generally never became firm, and either party can typically walk away according to the condition’s own terms without the consequences described above.

A second legitimate basis arises when the other side has committed a serious misrepresentation or breach of its own — for example, a seller who actively concealed a dangerous latent defect, discussed further in our guide to seller disclosure obligations. Relying on this kind of exit is a higher-risk, fact-specific judgment call, since getting it wrong can itself amount to a failure to close.

A third possibility is a specific term the agreement itself includes allowing one or both parties to exit under defined circumstances — some agreements are drafted with their own tailored exit mechanisms, which is one reason the actual wording of the specific contract matters more than general assumptions about how real estate deals work.

It is worth distinguishing these legitimate exits from situations that merely feel unfair but don’t provide a contractual basis to walk away — a better offer arriving after a deal is firm, a change of heart about the neighbourhood, or a relative raising concerns after the fact are common real-world scenarios, but none of them generally create a right to cancel on their own. The question is always whether the specific agreement, as written, gives a party an actual exit, not whether walking away feels reasonable under the circumstances.

When neither side has a clear unilateral right to exit but both are willing to part ways, a mutual release is generally the most straightforward solution. This is a separate document, signed by both the buyer and seller, that formally cancels the Agreement of Purchase and Sale and sets out what happens to the deposit — commonly a full or partial refund to the buyer, though the specific terms are negotiated between the parties.

A mutual release avoids the cost, delay, and uncertainty of a dispute and gives both sides a clean, documented end to the transaction. It generally requires genuine agreement from both sides, though, and a party with no legitimate basis to exit may find the other side unwilling to sign one without some concession, such as forfeiting part or all of the deposit.

Because there is generally no cooling-off period once a deal is firm, the most effective point to address second thoughts is before signing, or while a deal is still conditional. That might mean negotiating a longer conditions period, making sure financing is genuinely confirmed before waiving a financing condition, or having a lawyer review the agreement before it is signed rather than after.

This article explains, in general terms, how Ontario law typically treats a firm real estate agreement — it is not an assessment of any specific deal or a recommendation about what to do in a particular situation. Our guide to the Agreement of Purchase and Sale and our tools and checklists section can help with understanding the document before you sign, and our contact page has information on getting in touch for general questions.