Latent Defect and Sub-Purchaser: The Court of Cassation Clarifies the Rules for Chain Sales

Imagine: you buy a house in Mimizan, with your feet in the sand, to use as a second home. A few months later, a persistent smell of mould invades the basement. You call in an expert: the damp problem existed at the time of purchase, but it was hidden. You want to take action against the seller, but he himself had bought it a few years earlier from a developer. Who is responsible? This is the question that the Court of Cassation decides in this judgment of 3 September 2025.

Each year, hundreds of disputes arise from latent defects in chains of successive sales. Owners, tenants or buyers ask themselves: can I take action against the initial seller? This decision provides a nuanced answer, which depends on the professional or non-professional status of the first purchaser.

In short, the Court of Cassation reminds that the warranty against latent defects (Articles 1641 et seq. of the Civil Code) is an accessory to the sold property: it travels with it. But be careful, when the action is directed against the original seller, it is necessary to examine whether the first purchaser knew of the defect at the time of his purchase. If he was a professional, he is presumed to know it, and this presumption is irrebuttable (one cannot prove the contrary). This can be fatal for the sub-purchaser. Let us break this down.

The Facts: A Story Like Many Others

On 17 January 2019, sub-purchasers (individuals) sue the original seller of a vehicle, claiming it was affected by a latent defect prior to the first sale. The vehicle had been bought new by a first purchaser, then resold a few years later to the sub-purchasers. They discover a serious defect (probably engine or structural) that existed at the time of the first sale.

They decide to sue the manufacturer or initial dealer directly, rather than their own seller (the first purchaser). Why? Because sometimes the direct seller is insolvent or untraceable. But also because the warranty against latent defects can be more extensive against a professional.

The Court of Appeal, seized of the matter, admits the sub-purchasers' action against the original seller, finding the existence of a latent defect prior to the first sale. But the original seller appeals to the Court of Cassation. He argues that the Court of Appeal did not verify whether the first purchaser (a professional, in this case) knew of the defect at the time of his purchase. Yet, according to him, this knowledge should have been investigated.

The Court of Cassation agrees with him: it quashes the appellate decision for lack of legal basis. The lower courts did not investigate whether the first purchaser had knowledge of the defect. Yet this was essential. In other words, the Court of Appeal skipped a step.

The Reasoning of the Court — Explained

The Court of Cassation relies on Articles 1641, 1642 and 1645 of the Civil Code. Article 1641 defines a latent defect: a defect that renders the property unfit for its use or so diminishes its use that the buyer would not have bought it (or would have paid less) had he known of it. Article 1642 provides that the seller is not liable for apparent defects. Article 1645 aggravates the liability of a professional seller who knew of the defect: he must pay all damages, not just the restitution of the price.

The Court deduces from these texts that the warranty against latent defects accompanies the thing sold as an accessory. This means that the sub-purchaser can sue the original seller directly, without going through his own seller. This is an automatic transfer of the warranty.

But there is an essential condition: when the action is brought against the original seller, the knowledge of the defect by the first purchaser is assessed at the date of the first sale. If the first purchaser is a professional, he is irrebuttably presumed to know the defect (no evidence to the contrary is allowed). This presumption is a double-edged sword: it protects the sub-purchaser if the first purchaser was a layperson, but it penalises him if the first purchaser was a professional, because then the knowledge is irrebuttably established, which may exonerate the original seller? No, careful: the knowledge of the first purchaser does not exonerate the original seller, but it can influence the determination of liability. In reality, the Court of Cassation requires that the knowledge of the defect by the first purchaser be verified to determine whether the latter should have disclosed it upon resale. If the professional first purchaser knew of the defect, he himself is liable to the sub-purchaser, and the original seller may be discharged? Not exactly. The judgment is more subtle: it imposes an investigation to ascertain whether the first purchaser had knowledge of the defect, because this conditions the extent of the warranty owed by the original seller. In practice, if the professional first purchaser knew of the defect, the sub-purchaser will have more difficulty suing the original seller, because the professional is deemed to have been warned.

What few people know is that this irrebuttable presumption of knowledge for professionals is a consistent jurisprudential construction. The Court of Cassation reaffirms it forcefully here. It censures the Court of Appeal for not having carried out this investigation.

What This Changes for You — Concretely

If you are a private purchaser (you buy a second-hand property from a private individual), you can sue the original seller if the defect existed before the first sale. But be careful: if the first purchaser was a professional, his presumed knowledge of the defect could reduce your chances of obtaining redress from the original seller. In practice, you will have to prove that the first purchaser was not a professional, or that he was unaware of the defect despite his status (which is impossible for a professional).

If you are an original seller (manufacturer, developer), this decision offers you protection: you can argue against the sub-purchaser that the first professional purchaser knew of the defect, and therefore your liability is mitigated. For example, a property developer in Capbreton who sells a unit to a property trader, who then resells it to a private individual: if the property trader is a professional, he is presumed to know of the defects. The private individual cannot sue the developer if the defect was known to the trader.

If you are a landlord owner in Mimizan, this case law concerns you if you bought a property from a professional and then rent it out. In the event of a latent defect affecting the property, you could be sued by your tenant, but you can claim against your own seller, or even the original seller, subject to the first purchaser's knowledge of the defect.

Numerical example: a private individual buys a second-hand car for €15,000 from a garage owner (professional) in Capbreton. The garage owner had bought it for €12,000 from a dealer. If the car has a hidden engine defect (repair cost €5,000), the private individual can sue the dealer. But the dealer can argue that the garage owner, as a professional, must have known of the defect, which may limit his liability. In practice, the private individual may obtain less.

If you are in this situation, you must gather all evidence of the sales chain and the hidden nature of the defect. Consult a lawyer quickly, because the action for latent defects must be brought within two years of the discovery of the defect (Article 1648 of the Civil Code).

Four Tips to Avoid This Type of Dispute

• Have the property inspected before purchase: For a property or second-hand vehicle, an independent inspection can detect apparent or latent defects. In Mimizan, hire an approved expert for an old house: expect €500 to €1,000, an investment that can save you thousands of euros in repairs.
• Keep all documents of the sales chain: Invoices, sales certificates, technical reports. In the event of a dispute, these documents allow you to trace back to the original seller. Without them, the action is compromised.
• Check the status of the seller: Ask whether the seller is a professional (garage owner, developer, property trader) or a private individual. This information is crucial to determine whether the presumption of knowledge applies. On an advertisement, the status is often mentioned; otherwise, ask.
• Act quickly after discovering the defect: As soon as you notice a defect, put the seller on notice by registered letter. The two-year period runs from the discovery. Do not delay, because evidence fades and recourse becomes more complicated.

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Further Reading: Related Case Law and Developments

This decision is in line with a consistent line of cases from the Court of Cassation. Already, in a judgment of 19 July 2023 (No. 22-13.946), the Court had ruled that the warranty against latent defects is automatically transferred to successive purchasers. It also specified that the knowledge of the defect by the intermediate professional seller is presumed. The judgment of 3 September 2025 merely confirms and clarifies this rule.

An earlier decision, of 12 October 2021 (No. 20-15.356), took a similar approach: the sub-purchaser can sue the original seller, but the knowledge of the defect by the first purchaser is decisive. If the first purchaser is a professional, his presumed knowledge may exonerate the original seller? No, not exonerate, but limit his liability to restitution, without damages.

The trend is therefore towards increased protection of the original seller when the sales chain involves professionals. This means that in practice, sub-purchasers will have an interest in suing their direct seller rather than going back up the chain. In the future, we can expect courts to be increasingly demanding on the proof of knowledge of the defect by each link in the chain.

Key Points to Remember

FAQ:

1. Can I sue the manufacturer if I bought a second-hand property from a private individual? Yes, if the defect existed before the first sale. But you will have to prove that the first purchaser (the private individual) was unaware of the defect.
2. What happens if the first purchaser was a professional? He is irrebuttably presumed to know the defect. This complicates your action against the original seller, because the professional should have disclosed it upon resale.
3. What are the time limits for suing? You have two years from the discovery of the defect to bring an action for latent defects (Article 1648 of the Civil Code).
4. What damages can I obtain? You can claim restitution of the price or a reduction, and damages if the seller knew of the defect. For a professional, damages are automatic (Article 1645).
5. Must I necessarily consult a lawyer? Yes, because these actions are technical. A lawyer specialised in property or sale law will help you identify the correct defendant and gather evidence.

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