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Making a Backup Offer on a House in Ontario: How It Works

Learn how a backup offer works in Ontario when a home already has an accepted conditional offer, including escape clauses, deposits and good-faith conditions.

Real Estate4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 6, 2026
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Key takeaways
  • A conditional agreement is not final and binding until all its conditions are met or waived, so the seller may still consider other offers.
  • If the first buyer waives or satisfies its conditions within the escape-clause deadline, the seller must sell to that buyer on the original terms.
  • Pay your deposit on time, because paying late or holding it back can itself breach the agreement.

You find the house you want, and then you learn that the seller has already accepted an offer with conditions. It is easy to assume the door is closed. In Ontario, it often is not, and a backup offer may be a real option.

This article explains how a backup offer fits with the first buyer's conditions, how the seller's escape clause works, what a seller can do with offers, and how deposits are handled. Every deal is different, so your agent or a lawyer should look at the actual paperwork.

Why a seller can still look at other offers

A conditional agreement is not final and binding until all of its conditions are met or waived. Because of that, a seller who has accepted a conditional offer may still consider other offers.

Common conditions include a satisfactory home inspection or financing. Conditions must be waived or performed by the agreed time before the deal becomes binding, and they must be used in good faith. Once all conditions are waived, the agreement is firm and binding.

How the escape clause works

The seller protects itself with an escape clause. It requires the seller to give notice to the first buyer, and it gives that buyer a set time, for example 48 hours, to waive or satisfy its conditions.

This is the key point for you as a backup buyer. If the first buyer waives or fulfils its conditions within the deadline, the seller must sell to that first buyer on the original terms. Your offer does not displace the first deal in that case.

Why a backup offer should be conditional on the first deal ending

A backup, or second, offer should be made conditional on the first deal ending. That way the seller does not end up selling to two buyers.

Because the exact wording matters, have your agent or a lawyer review how that condition is drafted before you sign. A poorly worded backup condition can leave you or the seller exposed.

What the seller can do, and what you can find out

When an offer is received, the seller may accept it, reject it, make a counter-offer, or ask the buyer to revise it. With competing offers, the seller may negotiate with one buyer while setting the others aside, and does not have to take the highest price.

If you have made a written offer, you are entitled to know the number of competing offers. You are not entitled to know their amounts or conditions.

QuestionAnswer
Can the seller take a lower offer?Yes. The seller does not have to take the highest price.
Can you learn the other offers' amounts?No. You can learn only the number of competing offers.
Can the seller counter or ask for changes?Yes, the seller may counter or ask you to revise.

Deposits and what to do next

Pay the deposit when the agreement says it is due. Paying it late or withholding it can itself breach the agreement. In RECO's example, a buyer who held back a deposit due on acceptance until after an inspection may have given the seller grounds to terminate and seek damages.

The deposit is normally held by the brokerage in a real estate statutory trust account. It can be released only with a mutual consent or release signed by all parties, or under a court order.

Frequently asked questions

Can I make an offer on a house that already has an accepted offer?

Often yes, if the accepted offer is still conditional. A conditional agreement is not final and binding until its conditions are met or waived, so the seller may still consider other offers.

What happens if the first buyer waives its conditions?

If the first buyer waives or fulfils its conditions within the deadline, the seller must sell to that buyer on the original terms. Your backup offer would not take over in that case.

Can I find out how much the other offers are?

No. A buyer who has made a written offer is entitled to know the number of competing offers, but not their amounts or conditions.

Who holds my deposit and when is it released?

The brokerage normally holds it in a real estate statutory trust account. It can be released only with a mutual consent or release signed by all parties, or under a court order. If a brokerage holds a deposit for two years and it is still not clear who is entitled to it, the deposit goes to RECO, which also pays out only on consent or a court order.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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