Buying · Latent defect · Older homes
A seller of an older home almost always defends with the same word: wear. Sometimes he is right. The line between expected wear and a defect is drawn with tests, not with the year of construction.
Buying a house built in 1920 does not mean giving up the legal warranty, but age changes the analysis. Article 1726 of the Civil Code of Quebec targets a defect which renders the property unfit for the use for which it was intended or which so diminishes its usefulness that the buyer would not have bought it or paid so high a price. A component that has reached the end of its service life in a century-old house is not a defect: it is what a prudent and diligent buyer should have expected. The same article excludes the apparent defect, defined as one that can be perceived by a prudent and diligent buyer without the need to resort to an expert, and that test is applied taking the age and visible condition of the building into account. What remains a latent defect is what no informed buyer could have anticipated, even when buying old.
Age does not remove the legal warranty. Article 1716 provides that the seller is bound to warrant the quality of the property and that this warranty exists by operation of law, with no distinction based on the year of construction. A 1925 house is covered like a 2015 one.
What age changes is the benchmark. Article 1726 measures whether a defect is apparent against a prudent and diligent buyer. A prudent buyer purchasing a century-old home knows that original plumbing, an obsolete electrical panel or windows at the end of their life are likely. What was foreseeable is not hidden.
The older the building, the more the pre-purchase inspection stops being a formality and becomes the document that will later define what was apparent. A report stating plainly that the plumbing is original and will need replacing removes your claim on that point, but it protects you on everything it examined and found nothing on.
On an old house it is often worth going beyond the visual mandate: a camera in the drain, moisture readings, verification of the electrical panel by a master electrician. See the pre-purchase inspection.
The best protection is not silence, it is precision. Writing in the declarations by the seller form that the roof dates from a given year, that the drain was redone on a given date, that the basement took water during a specific event, turns a grey zone into a fact known to the buyer. A fact known to the buyer is no longer a latent defect under article 1726.
Article 1732 allows the parties to add to the obligations of legal warranty, diminish its effects or exclude it altogether, but in no case may the seller exempt himself from liability for his personal acts or omissions. Article 1733 adds that he may not exclude liability unless he disclosed the defects he was aware of or could not have been unaware of, except where a buyer buys at his own risk from a seller who is not a professional seller. See the legal warranty in English.
The same warranty rules, yes. What is added are the renovation constraints specific to classified or heritage-site buildings, which come from the municipality and can make corrective work considerably more expensive.
It is, and it works on components whose wear was foreseeable. It does not work on what was concealed, nor on what no informed buyer could have anticipated.
The latent defect file: the four tests, the deadlines, the formal notice, the proof, the expert report, the six steps, small claims court, who pays, the seller who did not know, older homes, water infiltration, the roof, the inground pool and the septic system and the well.
Every article quoted here is reproduced from the official English text of the Civil Code of Quebec and the Code of Civil Procedure published by Légis Québec, both read on September 11, 2026. We give the article numbers so you can read them yourself. We are real estate brokers, not lawyers: we can tell you what the law provides and what your transaction left behind as evidence, but the analysis of your file belongs to a lawyer. When the amount at stake runs past a few thousand dollars, that call happens before the formal notice, not after.
The Loaa & Manseur team, led by Lotfi Manseur and Loaa Al Daow, is the number 1 team at RE/MAX Platine in 2024 and 2025, 6th RE/MAX team in Quebec, 15th in Canada and in the global top 50 of large residential teams according to the official RE/MAX ranking, computed on actual transactions. Its Google profile counts more than 220 reviews with a 4.9 rating. Its offices are at 55 avenue de l'Équinoxe in Brossard, one bridge from the island, and every broker's licence can be checked in the OACIQ public register. Three things to verify yourself before calling us, and to demand of any other broker.
Also available in French: version française de ce guide.
Published September 7, 2026 by the Loaa & Manseur team, the number 1 team at RE/MAX Platine in 2024 and 2025, 6th RE/MAX team in Quebec, 15th in Canada and in the global top 50 according to the official RE/MAX ranking. Tell us about your project.
Équipe no 1 de RE/MAX Platine en 2024 et en 2025, 6e au Québec, 15e au Canada et dans le top 50 mondial au classement officiel RE/MAX. Réponse en moins de 24 heures, sept jours sur sept.