Buying property in France is exciting. It is also the single largest transaction most people will ever make. And the hardest part for a foreign buyer is often not the price or the location \u2014 it is knowing what the seller should have told you but did not.<\/p>\n
French law imposes a dense set of disclosure obligations on property sellers. Some are mechanical: the law requires a file of mandatory diagnostic reports, from the energy performance certificate (diagnostic de performance \u00e9nerg\u00e9tique<\/em> or DPE) to the termite survey. Others are more subtle: the seller must voluntarily disclose any information that could sway your decision to buy, even if you never thought to ask. And when the seller stays silent, the law gives the buyer several distinct \u2014 and sometimes cumulative \u2014 remedies.<\/p>\n This article explains what a French property seller must disclose, what happens when they do not, and how a foreign buyer can protect themselves before signing. It is written for non-French nationals \u2014 investors, second-home buyers, retirees \u2014 who may encounter these rules for the first time.<\/p>\n Since the 2016 reform of French contract law, the Civil Code has contained a general pre-contractual duty of information. Article 1112-1 of the Civil Code<\/a> states that a party who knows information whose importance is decisive for the other party’s consent must disclose it. The obligation arises when the other party legitimately does not know the information or places trust in its contracting partner.<\/p>\n This is not a passive rule. It requires the seller to volunteer information \u2014 not merely answer questions truthfully. The only carve-out concerns the estimation of the value of what is being sold: a seller need not tell you that, in their view, the property is overpriced. Everything else \u2014 the physical condition of the building, its legal status, its rental history, known defects, neighbourhood disputes, planned public works, the true surface area \u2014 falls within the duty if it would matter to a reasonable buyer.<\/p>\n Critically, the text adds that \u00ab Les parties ne peuvent ni limiter, ni exclure ce devoir \u00bb<\/em> \u2014 the parties cannot limit or exclude this duty. Any clause in a compromis de vente<\/em> (preliminary sale agreement) that purports to waive the seller’s obligation to inform is void. This is a matter of public policy, and the Cour de cassation treats it as such.<\/p>\n The practical implication for a foreign buyer is this: if, after the sale, you discover something the seller knew but did not tell you \u2014 structural damp, an unresolved boundary dispute, the fact that the roof leaks every winter \u2014 you have a statutory path to compensation or even annulment of the sale. You need not prove a lie. Silence, when the seller knew the information was decisive for you, is enough.<\/p>\n The French Cour de cassation confirmed a closely related principle in a published decision on 23 September 2020: an action for fraudulent misrepresentation (dol<\/em>) is not exclusive of the action under the statutory warranty against hidden defects (garantie des vices cach\u00e9s<\/em>). The court held that \u00ab l’action en garantie \u00e0 raison des d\u00e9fauts cach\u00e9s de la chose vendue n’est pas exclusive de l’action en responsabilit\u00e9 d\u00e9lictuelle fond\u00e9e sur le dol ou la r\u00e9ticence dolosive commis avant ou lors de la conclusion du contrat \u00bb<\/em> \u2014 the action for hidden defects does not bar a concurrent claim in tort for fraud or fraudulent concealment committed before or during the conclusion of the contract (Cass. 3e civ., 23 Sept. 2020, no. 19-18.104, Publi\u00e9 au Bulletin<\/em><\/a>). A buyer can pursue both theories simultaneously, which is a significant tactical advantage in litigation.<\/p>\n In addition to the general duty to inform, French law requires every seller of a built property to compile and annex to the sale agreement a dossier de diagnostic technique<\/em> (DDT) \u2014 a file of mandatory diagnostic reports. The list is set out in Article L271-4 of the Construction and Housing Code<\/a> and currently includes twelve items.<\/p>\n The most important for a foreign buyer are:<\/p>\n The energy performance certificate<\/strong> (DPE), defined by Article L126-26 of the same code<\/a>, which rates the property from A (most efficient) to G (least efficient) and is valid for ten years. Since 1 July 2021, the DPE is opposable<\/em> \u2014 meaning the buyer can sue on it if the information is incorrect. A 2026 regulatory change recalculated the coefficient for electric heating, reclassifying roughly 850,000 homes out of the worst categories with no renovation work required. For a foreign buyer purchasing what appears to be an F or G property, it is worth checking whether an updated certificate would change the rating \u2014 which may also change the legal obligations attached to the property.<\/p>\n The lead exposure report<\/strong> (CREP), mandatory for buildings constructed before 1949.<\/p>\n The asbestos survey<\/strong>, required for buildings whose construction permit was issued before July 1997.<\/p>\n The termite and wood-destroying insect report<\/strong>, required in designated geographical zones. A 2022 decision of the Cour de cassation illustrates the consequences of failure in this area: a syndicat des copropri\u00e9taires<\/em> (co-ownership association) was held liable for damage caused by a termite infestation that its managing agent had failed to disclose to the notary handling a sale. The court applied the principle that \u00ab le syndicat des copropri\u00e9taires est responsable \u00e0 l’\u00e9gard des copropri\u00e9taires ou des tiers des fautes commises par le syndic, son mandataire, dans l’exercice de ses missions \u00bb<\/em> \u2014 the co-ownership association is liable for faults committed by its managing agent within the agent’s duties (Cass. 3e civ., 15 June 2022, no. 21-16.223<\/a>).<\/p>\n The gas installation report<\/strong> and electrical installation report<\/strong>, required for installations older than fifteen years.<\/p>\n The natural and technological risk statement<\/strong> (\u00e9tat des risques<\/em>), which tells you whether the property sits in a flood zone, a seismic zone, near a Seveso-classified industrial site, or in an area subject to a natural risk prevention plan (PPRN).<\/p>\n The sanitation report<\/strong>, covering whether the property is connected to the mains sewer or uses a private system, and whether that system complies with regulations.<\/p>\n The law draws a sharp distinction between the consequences of missing diagnostics. Under Article L271-4 II, if at the time of the notarised deed any of the lead, asbestos, termite, gas, electrical, or sanitation reports are absent or out of date, \u00ab le vendeur ne peut pas s’exon\u00e9rer de la garantie des vices cach\u00e9s correspondante \u00bb<\/em> \u2014 the seller cannot exclude liability for the corresponding hidden defects. That is a powerful protection: the seller cannot hide behind a standard exclusion clause for the very problems the missing report was meant to catch.<\/p>\n If the natural risk statement or the safety and sanitation orders are missing, the buyer may seek \u00ab la r\u00e9solution du contrat ou demander au juge une diminution du prix \u00bb<\/em> \u2014 either rescission of the contract or a price reduction ordered by the court.<\/p>\n For the DPE specifically, the law states that the buyer \u00ab ne peut se pr\u00e9valoir \u00e0 l’encontre du propri\u00e9taire des recommandations accompagnant le diagnostic de performance \u00e9nerg\u00e9tique \u00bb<\/em> \u2014 the buyer cannot sue the seller on the basis of the DPE’s recommendations, which are purely indicative. But the energy class itself, the consumption figures, and the greenhouse gas emission data are binding, and the certificate must be annexed to both the compromis<\/em> and the final deed.<\/p>\n For a foreign buyer, the practical takeaway is straightforward: never sign a compromis de vente<\/em> without first reading every page of the DDT. If a report is missing, demand it. If one is stale \u2014 a DPE dated 2015, an asbestos report from a decade ago \u2014 ask for a new one before committing. The cost of the diagnostics is, by law and by custom, borne by the seller.<\/p>\n The garantie des vices cach\u00e9s<\/em> (warranty against hidden defects) is the oldest buyer protection in French law, dating from the Napoleonic Code of 1804. Article 1641 of the Civil Code<\/a> provides that \u00ab le vendeur est tenu de la garantie \u00e0 raison des d\u00e9fauts cach\u00e9s de la chose vendue qui la rendent impropre \u00e0 l’usage auquel on la destine, ou qui diminuent tellement cet usage que l’acheteur ne l’aurait pas acquise, ou n’en aurait donn\u00e9 qu’un moindre prix, s’il les avait connus \u00bb<\/em> \u2014 the seller warrants the thing sold against hidden defects that render it unfit for its intended use, or that diminish that use to such an extent that the buyer would not have bought it, or would have paid less, had they known.<\/p>\n Three conditions must all be met: the defect must be hidden \u2014 not apparent on a reasonable inspection; it must predate the sale; and it must be serious enough to affect the use of the property. A leaking tap does not qualify; a roof that caves in every winter, a foundation that is sinking, or a septic system that discharges into the neighbour’s garden does.<\/p>\n Article 1643<\/a> then draws a distinction that is crucial for foreign buyers to understand. If the seller knew about the defect, they are liable for all damages, including the return of the price and consequential losses. If the seller did not know, they are still liable \u2014 unless the sale contract includes an exclusion clause. The text is blunt: \u00ab il est tenu des vices cach\u00e9s, quand m\u00eame il ne les aurait pas connus, \u00e0 moins que, dans ce cas, il n’ait stipul\u00e9 qu’il ne sera oblig\u00e9 \u00e0 aucune garantie \u00bb<\/em> \u2014 the seller is liable for hidden defects even if they did not know about them, unless the contract says otherwise.<\/p>\n This is where the professional status of the seller matters enormously. A property developer, a builder, or a company that regularly buys and sells real estate is a vendeur professionnel<\/em> and is presumed to know the defects. They cannot rely on a clause excluding liability against a non-professional buyer.<\/p>\n The Cour de cassation confirmed this principle in a 2022 decision that reversed an appellate ruling for failing to distinguish between a professional seller and a professional buyer. The court held that a clause limiting or excluding the warranty against hidden defects \u00ab est opposable \u00e0 un acheteur professionnel de m\u00eame sp\u00e9cialit\u00e9 que celui qui lui vend la chose \u00bb<\/em> \u2014 is enforceable against a professional buyer of the same specialty (Cass. 3e civ., 4 March 2021, no. 20-10.657<\/a>). For a foreign individual buying a holiday home or a rental investment, an exclusion clause buried in the fine print will almost never be enforceable if the seller is a professional.<\/p>\n The buyer must act within two years of discovering the defect (Article 1648 of the Civil Code), and within twenty years of the sale itself. The clock starts running from the day you discover the problem, not the day of the sale \u2014 but you must bring the claim promptly after discovery.<\/p>\n In a separate 2022 decision, the Cour de cassation also reminded the lower courts that the professional status of the seller imposes duties that extend well beyond the sale itself. A seller who divided a commercial building into units and sold them without the required fire-safety inspections was presumed to know the resulting defects, because it had commissioned the work. The court held that this presumption \u00ab ne pouvait \u00eatre \u00e9cart\u00e9e sans rechercher si cette qualit\u00e9 ne lui imposait pas de proc\u00e9der \u00e0 des v\u00e9rifications \u00e9l\u00e9mentaires \u00bb<\/em> \u2014 could not be set aside without examining whether the buyer’s own professional status also required it to carry out basic checks (Cass. 3e civ., 26 Jan. 2022, no. 18-23.578<\/a>). Between two professionals of the same field, an exclusion clause may stand. Between a professional seller and a private buyer, it rarely does.<\/p>\n Even when the conditions for the garantie des vices cach\u00e9s<\/em> are not satisfied \u2014 the defect is not serious enough, or the two-year limitation period has passed \u2014 a buyer may still succeed on the ground of dol<\/em>, the French law equivalent of fraudulent misrepresentation.<\/p>\n Article 1137 of the Civil Code<\/a> defines dol<\/em> as \u00ab le fait pour un contractant d’obtenir le consentement de l’autre par des manoeuvres ou des mensonges \u00bb<\/em> \u2014 obtaining the other party’s consent through schemes or lies. The text adds a second, vital limb: \u00ab constitue \u00e9galement un dol la dissimulation intentionnelle par l’un des contractants d’une information dont il sait le caract\u00e8re d\u00e9terminant pour l’autre partie \u00bb<\/em> \u2014 intentional concealment of information the party knows to be decisive for the other is also fraud.<\/p>\n This is r\u00e9ticence dolosive<\/em>: silence that amounts to fraud. It does not require an active lie. It requires proof that the seller knew the information, knew it was decisive, and chose to say nothing. The buyer must also show that the concealed information would have changed their decision \u2014 either they would not have bought, or they would have bought at a lower price.<\/p>\n The Cour de cassation has drawn the practical contours of this doctrine through a series of decisions that are directly relevant to foreign buyers. In a 2020 case, the court upheld a finding of r\u00e9ticence dolosive<\/em> against sellers who had covered damp walls with three layers of wallpaper before putting the house on the market. The buyers discovered severe humidity and mould immediately after moving in, when the wallpaper began to peel. The court held that the sellers’ deliberate concealment of the problem \u2014 which they necessarily knew about, having applied the wallpaper themselves \u2014 constituted fraud even though the damage was not severe enough to trigger the garantie des vices cach\u00e9s<\/em>. The court noted that \u00ab lorsqu’une partie invoque le dol en demandant uniquement la r\u00e9paration du pr\u00e9judice caus\u00e9 par ce vice du consentement, le juge peut, sans se prononcer express\u00e9ment sur le caract\u00e8re intentionnel de la r\u00e9ticence dolosive, accorder des dommages-int\u00e9r\u00eats sur la base d’un manquement \u00e0 l’obligation pr\u00e9-contractuelle d’information du vendeur \u00bb<\/em> \u2014 when a party claims fraud seeking only damages, the judge may award compensation for breach of the pre-contractual duty to inform without expressly ruling on the intentionality of the concealment (Cass. 3e civ., 1 Oct. 2020, no. 19-21.051<\/a>).<\/p>\n This is a subtle but crucial point: the burden of proving dol<\/em> \u2014 with its requirement of intentionality \u2014 is softened when the claim is framed as a breach of the Article 1112-1 duty to inform, which merely requires that the seller knew the information and failed to disclose it. The two actions can and should be pleaded together.<\/p>\n There are limits. In a 2020 decision, the Cour de cassation rejected a dol<\/em> claim by a buyer who had purchased shares in a property-holding company and later discovered that nearly half the land was not owned by the company. The court noted that the buyer \u00ab sur qui repose une obligation pr\u00e9-contractuelle de s’informer sur la consistance de l’actif patrimonial de la soci\u00e9t\u00e9 qu’elle a eu pour projet d’acqu\u00e9rir, ne peut faire grief \u00e0 M. P… de l’avoir tromp\u00e9e \u00bb<\/em> \u2014 the buyer, who had a pre-contractual duty to inform herself about the company’s assets, could not blame the seller for deceiving her (Cass. 3e civ., 23 Sept. 2020, no. 19-17.353<\/a>). A buyer who fails to do even basic diligence cannot later claim she was deceived.<\/p>\n The distinction is practical. A foreign buyer who buys a house with a beautiful fresh paint job and later discovers the walls are saturated with moisture has a strong claim. A buyer who never asks to see the proc\u00e8s-verbaux<\/em> (minutes) of the latest co-ownership general meetings and later complains about planned major works has a weaker one. The law expects the buyer to take reasonable steps to inform themselves. But it does not require the buyer to be clairvoyant.<\/p>\n The sanction for proven dol<\/em> is the nullity of the contract \u2014 the sale is unwound, the purchase price returned, and the parties restored to their pre-contractual positions \u2014 plus damages. The buyer may also seek a price reduction instead of annulment, which is often the more pragmatic remedy: keep the property but recover the difference between what you paid and what it was actually worth.<\/p>\n A further tactical point: the limitation period for a dol<\/em> claim is five years from the discovery of the fraud (Article 2224 of the Civil Code), which is significantly longer than the two-year window for vices cach\u00e9s<\/em>. This makes dol<\/em> the fallback for buyers who discover the problem late.<\/p>\n For a foreign buyer, the French legal framework for seller disclosure is, on balance, protective. It imposes a general duty to inform that cannot be contracted out. It lists mandatory diagnostics whose absence strips the seller of their usual defences. It provides two distinct paths to compensation \u2014 hidden defects and fraudulent misrepresentation \u2014 that can be pursued together. And it extends the limitation period for fraud to five years from discovery, giving a buyer who has been genuinely deceived a realistic window to act.<\/p>\nI. The Seller’s Pre-Contractual Duty to Inform<\/h2>\n
A. The General Obligation: Article 1112-1 of the Civil Code<\/h3>\n
B. The Mandatory Diagnostic File: Article L271-4 of the Construction and Housing Code<\/h3>\n
II. Legal Remedies When the Seller Stays Silent<\/h2>\n
A. The Warranty Against Hidden Defects: Articles 1641 to 1643 of the Civil Code<\/h3>\n
B. Fraudulent Misrepresentation: Article 1137 of the Civil Code<\/h3>\n
Conclusion<\/h2>\n