Hidden defects and the legal warranty: what does it really cover?

In Quebec, the seller of a house warrants the buyer against hidden defects: a serious defect, existing at the time of sale, unknown to the buyer and undetectable by a prudent buyer.

What the inspector saw and wrote in the report is no longer hidden: that is where the inspection report changes everything. And if the deed says “without legal warranty, at the buyer’s own risk”, that recourse disappears.

To be a hidden defect under the Civil Code of Québec, the defect must meet four conditions. It is serious: it reduces use or value to the point that the buyer would not have bought, or not at that price. It is hidden: not apparent to a prudent and diligent buyer. It is prior to the sale. And it is unknown to the buyer.

A pre-purchase inspection is what a prudent buyer does. A defect noted in the report, even cautiously, is deemed known. A defect the inspector could not see (behind a wall, under a slab) may remain hidden.

Notify the seller in writing, within a reasonable time after discovery, before you undertake repairs, so they can observe it and propose a solution. Repairing first and claiming later seriously weakens the recourse.

Document everything: photos, expert report, quotes. The recourse generally seeks a price reduction or, for a major defect, cancellation of the sale.

A hidden-defect claim often involves an expert report (hundreds to thousands of dollars) and, failing an agreement, legal fees. Small claims go through the Small Claims Division up to the current ceiling.

Before you buy, here is what I would do.

1. Read the deed: “with legal warranty” or “without legal warranty” changes everything.
2. Resolve every limitation in the report (inaccessible rooms, items not inspected) before lifting the condition. What stays unknown by your choice is not hidden.
3. Keep the inspection report, the seller’s declaration and all correspondence.

I separate what your inspector observed from what they could not inspect, and I list those limitations apart, because they are what delimits your warranty.

Does your report mention this? Send it to me. In five minutes, I tell you what is priority, what to have checked and what to ask the seller.

Yes, more so: you waive the hidden-defect recourse, unless the seller knew of the defect and concealed it. It is common in estates and repossessions. The price should reflect it, and the inspection matters even more.

Notice must be given within a reasonable time after discovery, often read in months, not years. The claim itself is prescribed three years from discovery.

Only if they fell short of their standard of practice on a visible and accessible element. What they excluded as a limitation is not held against them.