Latent Defect in Property: When the Professional Seller Cannot Exclude Their Warranty

Imagine: you have just bought a magnificent villa in Antibes, with a sea view, and two months later you discover that the roof frame is infested with termites. The seller opposes you with a clause in the contract that says "sold as seen, without warranty". What can you do? This question is asked by hundreds of property owners each year on the Côte d'Azur. The answer lies in a judgment of the Court of Cassation dated 26 April 2006, which concerns a château but whose principles apply to all property.

In law, the warranty for latent defects (Article 1641 of the Civil Code) obliges the seller to remedy hidden defects that render the property unfit for its use. But the contract may provide for a clause excluding warranty. The question is: is this clause always valid? The answer depends on the status of the seller: if they are a professional, the clause is unenforceable. And the notion of professional can be broad, as this case shows.

In this article, I will dissect this decision, explain what it changes for you, whether buyer or seller, and give you practical advice to avoid pitfalls. Whether you are in Nice, Grasse or elsewhere, these rules concern you.

The Facts: A Story Like Many That Happen Every Day

Mr. X, a civil engineer, directed a building company for years that built multiple residential blocks. He sells a château to Mr. Y. The sale contract contains a clause excluding warranty for latent defects, classic in sales between private individuals. But after the sale, the buyer discovers that the roof frame, which underwent renovation work, suffers from serious latent defects – likely structural disorders threatening the building's stability. Mr. Y sues the seller for compensation.

Before the Court of Appeal, the seller relies on the exclusion clause, claiming he is not a professional in the construction industry. But the Court of Appeal notes that Mr. X is a civil engineer, that he directed a building company for many years and that he regularly attended the renovation site of the roof frame. It concludes that he is a professional in the construction industry, and that the exclusion clause cannot benefit him. The seller appeals to the Court of Cassation.

The Court of Cassation dismisses the appeal: it approves the Court of Appeal's characterisation of the seller as a professional, and confirms that the exclusion clause is inapplicable. In other words, the seller cannot escape liability by invoking a standard clause, because he knew or ought to have known of the defects.

The Reasoning of the Court – Dissected

The legal basis is Article 1643 of the Civil Code, which provides that the seller is liable for latent defects even if unaware of them, unless there is a contrary clause. But this clause cannot be invoked by a professional seller, because they are presumed to know of the defects. The Court of Cassation reaffirms this principle in its judgment.

In this case, the exclusion clause was perfectly clear: it excluded warranty for latent defects, except in the case of a sale by a professional seller. The question therefore was whether Mr. X was a professional. The Court of Appeal answered yes, based on his qualifications (engineer), his activity (director of a building company) and his presence on site. The Court of Cassation validates this reasoning: he was not a mere private individual but an informed professional.

However, note: this decision does not create an automatic presumption. Each case is assessed by the trial judges. But it shows that the status of professional can be established for a seller who is not a property professional in the strict sense, provided they have technical expertise and experience in the building trade. What few people know is that even an amateur developer, if they have carried out several projects, can be considered a professional.

In practice, courts consider several criteria: the nature of the seller's activity, their knowledge of the property, the extent of the works carried out, their profession. Here, the seller had a dual role: engineer and building company director. That sufficed.

What This Changes for You – Practically

For the buyer: if you buy a property from a seller with technical skills (architect, contractor, engineer) or who has carried out significant works themselves, you can invoke the warranty for latent defects even if the contract contains an exclusion clause. Concrete example: in Antibes, you buy a villa from a former mason who renovated the roof. Six months later, the roof leaks. You can take action.

For the seller: if you are a professional, you cannot hide behind a standard clause. You must sell with full transparency. If you know of a defect, you must disclose it, otherwise you will have to compensate the buyer. undefined, I have seen cases where developers had to pay hundreds of thousands of euros for defects they knew about.

For the tenant: even if you are not directly concerned by the sale, know that if your landlord is a professional, they cannot exclude liability for latent defects in the property. But beware: the warranty for latent defects only applies to sales, not to leases. In leases, it is the obligation of compliant delivery that applies.

Time limits: the action for latent defects must be brought within two years from the discovery of the defect (Article 1648 of the Civil Code). The amount of compensation can range from a few thousand euros to the full value of the property. For example, replacing a roof frame can cost €50,000 on the Côte d'Azur.

Four Tips to Avoid This Type of Dispute

• Have technical diagnostics carried out before the sale: do not rely solely on the exclusion clause. For an old property, call in an expert (architect, inspection bureau) to detect potential defects. The cost (€1,000 to €3,000) is modest compared to the cost of a dispute.
• Find out about the seller: ask your notary or lawyer to check whether the seller has a professional activity related to property or building. This can affect the validity of the exclusion clause.
• Negotiate a supplementary warranty: if the seller refuses to warrant against latent defects, ask for a price reduction or a warranty against eviction. A balanced compromise protects both parties.
• Keep all documents: invoices for works, correspondence, photos, diagnostics. In the event of a dispute, this evidence is essential to show that the seller knew of the defect or that they are a professional.

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Further Reading: Related Case Law and Developments

The tendency of the courts is to broaden the notion of professional seller. For example, in a judgment of 17 January 2006 (No. 04-18.466), the Court of Cassation held that a seller who had built his own house and was a qualified architect was a professional. Similarly, a judgment of 13 February 2007 applied this qualification to a seller who had managed building sites.

Conversely, for a private individual selling their home after living there, even if they have done works, they will not be considered a professional. The border is therefore drawn by habitual activity and technical expertise.

This case law confirms a desire to protect the unsuspecting buyer by preventing the professional seller from circumventing the law through unfair clauses. It is part of a broader movement to strengthen pre-contractual information (SRU law, ALUR law).

Summary and Next Steps

What to do if you discover a latent defect:

1. Do not delay: gather evidence (photos, witness statements, quotes).
2. Consult a lawyer specialising in property law to assess your situation.
3. Send a formal notice to the seller by recorded delivery demanding repair of the defect.
4. If refused, bring legal proceedings within two years of discovery.

FAQ

1. Can a private seller be considered a professional? Yes, if they have technical skills in building and have carried out significant works themselves. It is assessed on a case-by-case basis.

2. Is the exclusion clause always valid? No, it is unenforceable if the seller is a professional, or if they have concealed the defect (fraud).

3. What are the time limits for taking action? Two years from discovery of the defect, but the action must be brought within five years at the latest (absolute time limit).

4. Can I obtain damages? Yes, you can claim reimbursement of repair costs, a reduction in price, or even rescission of the sale if the defect is serious.

5. What if the seller is a company? Companies are always considered professionals, so the exclusion clause is unenforceable against them.

Are you in a similar situation? A 30-minute initial consultation with Maître Zakine (€45) can save you months of proceedings – and often much more. Book an appointment →