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Property Defects Found After Closing: Can You Sue the Seller in Ontario?

Found a leak or structural defect after closing? See how Ontario's buyer beware rule, latent defects and seller disclosure affect whether you can sue.

Real Estate4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 6, 2026
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Key takeaways
  • Ontario follows buyer beware, so a seller generally need not disclose defects a buyer could find through reasonable inspection and inquiry.
  • A seller must disclose latent defects that make the property unfit for habitation, dangerous or potentially dangerous.
  • Concealing a defect or being wilfully blind can create liability, but the time limit to sue should be confirmed with a lawyer quickly.

You moved in, and then the basement leaked or a structural problem showed itself. It is natural to ask whether the seller should have told you and whether you can get your money back.

The answer depends on what kind of defect it is, what the seller knew and what you could have found beforehand. This article explains the general rules in plain language so you know which questions to ask a lawyer.

Buyer beware: the starting point in Ontario

Ontario follows the rule known as buyer beware. A seller generally need not disclose patent defects, which are defects a buyer can find through reasonable inspection and inquiry. A stain on a ceiling you could see at a showing is an example of something you were expected to notice and ask about.

These duties come from case law, not from TRESA, the statute that governs real estate services. That is why outcomes depend so heavily on the specific facts.

Latent defects and what a seller must disclose

A latent defect is one that is not visible or discoverable through a reasonable inspection. A seller must disclose latent defects that make the property unfit for habitation, dangerous or potentially dangerous.

Type of defectWhat it meansGeneral position
PatentFound through reasonable inspection and inquirySeller generally need not disclose
Latent and seriousHidden, and makes the home unfit, dangerous or potentially dangerousSeller must disclose
ConcealedSeller hides a patent defectBuyer beware protection can be lost

A hidden leak is not automatically a defect the seller had to disclose. Whether it made the home unfit or dangerous, and what the seller knew, are questions of fact.

When a seller can be held responsible

A seller who conceals a patent defect can lose the protection of buyer beware. Failing to disclose a latent defect may be treated as misrepresenting the property, and wilful blindness can also create liability.

Seller information statements can matter too. A seller property information statement is not a required form. A seller's agent may ask the seller to complete one, and it is based on the seller's own knowledge and experience. If the seller has prepared one for buyers, the seller's agent must tell every interested buyer that it exists and must give a copy to any buyer who asks. If you received a statement, compare what it said with what you found.

The deadline to sue

Deadlines can apply to civil claims, and when the clock starts depends on the facts of your situation, so it is worth confirming with a lawyer. The exact period and how it applies to your situation should be confirmed with a lawyer, because a missed deadline can end an otherwise good claim. Do not wait to see whether the defect worsens before getting advice.

Your agreement of purchase and sale may also contain terms that affect a claim. Having a lawyer read it is a sensible early step.

What to do next

A lawyer can look at the evidence, explain whether the defect is likely to be treated as patent or latent, and discuss whether a claim is worth pursuing given the likely repair cost.

Frequently asked questions

Can I sue the seller for any defect I find after closing?

Not necessarily. Ontario follows buyer beware, so a seller generally need not disclose defects you could find through reasonable inspection and inquiry. Claims are stronger where a defect was latent and serious, or where the seller concealed it.

What counts as a latent defect?

It is a hidden defect you could not find through reasonable inspection. A seller must disclose latent defects that make the property unfit for habitation, dangerous or potentially dangerous.

Did the seller have to give me a property information statement?

No. The form is not required, but if the seller prepared one, the seller's agent must tell every interested buyer it exists and give a copy to any buyer who asks.

How long do I have to sue?

A time limit applies and it can be strict, so it is worth getting advice soon after you discover the problem. A lawyer can confirm the period that applies to your facts.

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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