Unbuildable land: sale annulled for error in Quebec

He had checked with the municipality. They said yes. Five days after signing at the notary’s office, the same inspector told him he could never build. What this case teaches about error, the annulment of a sale, and who ends up paying.

In November 2023, a construction superintendent planning his retirement spots a wooded 1.3-hectare lot on Centris in Saint-Lucien, near Drummondville. His plan is simple and he tells everyone about it: build a house with a detached garage and enjoy a quiet retirement in the country. Before buying, he does what any careful buyer should do: he phones the municipality. The inspector confirms the lot is buildable. The seller’s real estate broker calls the same afternoon and gets the same answer.

The sale closes on December 15, 2023 for $95,000. The following Monday, the buyer calls the inspector back to get his building permit. This time, the inspector has access to all of his computer tools, and calls the buyer into his office two days later. The verdict: in that sector, a minimum area of eight hectares is required to build. The lot is 1.3 hectares. No house will ever stand on it.

In Côté c. Succession de Dionne, 2026 QCCS 3038, rendered on August 20, 2026 by Justice Mark Phillips of the Superior Court (District of Drummond), the Court annuls the sale, orders the municipality to pay $20,000 in damages, and dismisses the claim against the broker. The judgment is a genuine primer on what Quebec civil law calls a defect of consent.

The facts in brief

The seller was not a developer: he was acting as liquidator of his late aunt’s estate (in Quebec, the “liquidator” is the person who administers and settles a deceased person’s estate). He had never seen the lot and never said a word about whether one could build on it. The broker had prepared the Centris listing without all the usual information, because the municipal offices were closed for a move. As for the inspector, he admitted at trial that he should have refrained from any statement that day, since he did not have access to his tools. But, the judge writes, he clearly wanted to be reassuring.

The deed of sale also contained a clause found in nearly every notarial deed in Quebec: the buyer declares that he takes the property “in the condition in which it is found” and that he has “verified himself with the competent authorities that the use he intends to make of the property complies with the laws and regulations in force”.

Error as a defect of consent: what the Civil Code says

A contract rests on the consent of the parties. If that consent was given on the basis of a false belief, the law allows the contract to be annulled, subject to certain conditions. This is what Quebec law calls a defect of consent. Article 1400 of the Civil Code of Québec recognizes three kinds of error that vitiate consent: error as to the nature of the contract (I thought I was renting, I actually bought), error as to the object of the prestation (I thought I was buying lot 12, it was lot 13) and, the most common, error as to “any essential element that determined the consent”.

The third category applies here. Three important points emerge from the judgment.

First, the essential element must have been known to the other party or obvious in the circumstances. You cannot cancel a sale because you were secretly nursing a project the seller knew nothing about. Here, the buyer had told everyone, including the seller during two hours spent looking for survey markers, that he wanted to build his home. Nobody disputed that buildability was the decisive element.

Second, one must distinguish “simple” error from error induced by fraud (a deliberate misrepresentation) or by fear (a threat). When nobody lied, the law speaks of simple error. The distinction is not academic: it determines what the victim can recover. More on this below.

Third, the second paragraph of article 1400 sets a limit: “An inexcusable error does not constitute a defect of consent.” In other words, someone whose mistake stems from gross carelessness will not be rescued by the courts.

The “I verified it myself” clause does not save the seller

The seller first argued that the clause in the deed, by which the buyer declared he had verified for himself that the lot suited his project, barred any claim. He relied on case law that gives effect to this kind of clause, while another line of authority treats it as mere boilerplate with no real effect.

Justice Phillips draws a distinction that every buyer and seller should know. That case law mostly concerns article 1725 C.C.Q., that is, the seller’s warranty against “limitations of public law” (zoning, by-laws, administrative restrictions). That is a remedy grounded in the rules governing sales. An action in nullity for error, on the other hand, rests on the general law of contracts. They are two conceptually distinct actions, and the choice belongs to the plaintiff. And when it comes to nullity for error, case law and academic commentary agree: such a clause does not bar the action.

The Court does carve out one exception: the buyer who expressly purchases “at his own risk”, waiving all warranties and knowingly accepting the risk. That buyer can no longer invoke error, unless there was fraud. There is a real gap, then, between a boilerplate clause and a genuine acceptance of risk.

Was the error excusable?

The seller next argued that the buyer, a tradesman familiar with zoning rules, had committed an inexcusable error by relying on a phone conversation without asking for anything in writing.

The judgment recalls how courts approach this question. An inexcusable error requires negligence of a certain gravity, assessed in light of the concrete circumstances, taking into account the parties’ age, experience and position. The concept must be interpreted restrictively, because if it were stretched too far, no error could ever be invoked: in hindsight, one more precaution would always have avoided the problem. And the burden of proving that the error was inexcusable lies on the party who raises it.

Here, the buyer knew he had to check, and he checked: he called the municipality and the broker, and got two affirmative answers. The absence of written confirmation does not change the conclusion. The error was not inexcusable. The sale is annulled.

A good-faith seller: the sale falls, but no damages

This is where the distinction between simple error and fraud matters most. When a contract is annulled, article 1422 C.C.Q. provides that it is “deemed never to have existed” and that each party must return to the other what it received. The seller becomes owner of the lot again and refunds the $95,000.

But because this was a simple error and the seller acted in good faith, the buyer cannot claim any damages from him. The judgment draws several concrete consequences:

interest on the purchase price runs only from the date of judgment, not from the sale;
the municipal taxes paid by the buyer remain his expense: they are costs tied to the enjoyment of the property;
the architect’s fees and stationery are denied, for lack of proof of an actual loss;
the culvert installed for safety reasons ($3,391.76) is reimbursed, because the seller will benefit from it once the lot is returned;
the notary’s fees for transferring the lot back are split equally;
the $6,553.58 commission paid to the broker need not be refunded: under the brokerage contract, it was payable whether or not the sale went through.

In short, a good-faith seller suffers the annulment of a sale he wanted to complete, but he is not punished for an error he did not cause.

The municipality pays for its inspector

A municipality answers for the faults of its employees like any other employer. Municipal officials have a duty to inform citizens correctly when they ask, and a municipality can be held liable for the wrong information they provide. This is not an obligation of result but an obligation of means, assessed according to the circumstances and the municipality’s resources.

The municipality maintained that the inspector had expressed reservations. The Court found otherwise, on a common-sense basis: two reasonable people, in two separate calls, understood that the lot was buildable, with no caveat. Had there been the slightest hesitation, they would have dug deeper. A well-meaning but careless employee, the judge writes, conveyed erroneous information that was understood as reliable. The municipality is ordered to pay $20,000 for trouble and inconvenience, the buyer’s retirement plans having been suddenly compromised.

The broker walks away, for lack of expert evidence

The buyer also blamed the seller’s broker for misinforming him, relying in particular on the professional conduct regulation that requires brokers to verify the information they provide to the public. The municipality supported that position.

The Court nonetheless dismisses the claim against the broker, for a reason of evidence: to establish that a professional committed a fault, one must normally prove, through expert evidence, the standard of conduct of a prudent and diligent broker in the same circumstances. That evidence was missing. The judge adds that, in any event, the buyer did not rely on the Centris listing: he did his own verification with the municipality. Even if the broker had been at fault, her conduct would not have caused the loss.

Why this case stands out

First, because it sets the record straight on a ubiquitous clause. The declaration “I have verified myself with the competent authorities” appears in virtually every real estate deed in Quebec. Many sellers believe it shields them. This judgment confirms that it does not bar an action in nullity for error, unless the buyer truly purchased at his own risk. To be fair, the question is not entirely settled: the judgment itself acknowledges two lines of case law on the effect of this clause under the warranty against public-law limitations. The result here turns on the buyer’s choice to plead error rather than warranty.

Second, because it walks through the entire mechanics of a defect of consent, from principle to dollars: what makes an error actionable, what makes it inexcusable, what you get from a good-faith seller (annulment, nothing more) and where to turn for damages (the party who was actually at fault).

Third, because it confirms that a verbal answer from a municipal official binds the municipality. The Court held that a citizen who calls the municipality and receives a clear answer acts reasonably, even without anything in writing. A citizen-friendly position, but one to handle with care: in a similar case cited by the judge, it was precisely a written confirmation that grounded the city’s liability.

What to take away

If you are buying land to build on. Say so clearly to the seller and the broker, ideally in writing in the offer to purchase: that is what makes buildability an “essential element” known to the other side. Get written confirmation from the municipality (and from the regional county municipality, the MRC, if the question falls within its jurisdiction) before you sign. This judgment favoured the buyer despite the lack of anything in writing, but every case turns on its evidence. Better still: make buildability an express condition of your offer.

If you are selling. The standard clause in the notarial deed does not immunize you against an action in nullity. If you know nothing about the lot, say so, and if you really want the buyer to assume the risk, have it stipulated expressly: a sale “at the buyer’s own risk”, without warranty, is not the same thing as boilerplate.

If you plan to sue a professional. A fault by a broker, notary or inspector is not proven by complaints alone: with rare exceptions, you need expert evidence establishing the standard of conduct. Without it, the claim is likely to fail even when the facts seem to speak for themselves.

If an official gives you information. Note the date, time and name, then ask for confirmation by email. That reflex costs five minutes and can be worth tens of thousands of dollars.

Buying Land You Can’t Build On: The Sale Is Cancelled, but Who Pays? Lessons on Error and Defective Consent