You live in Britain and you are selling the French holiday home you have owned for years, a stone house in the Dordogne, a flat on the Riviera or a cottage in Brittany. The price is agreed, the notaire has the file, and you assume the hardest part is behind you. In France it is not. Every seller must hand over a survey pack, the dossier de diagnostic technique, and since 2021 the energy rating inside it can be held against you. After completion the buyer has two years from discovering a hidden defect to sue for a price reduction or the unwinding of the sale, and British sellers who renovated the property themselves, or who sell through a family property company, lose the standard exclusion clause that protects ordinary private sellers. This guide explains what your file must contain, who pays when a survey is wrong, when an exclusion clause saves you and when it does not, and how to defend a claim from the United Kingdom, with the exact legal texts and two decisions of the Cour de cassation, France’s highest civil court, that decide these disputes. Everything is explained in English, with each French term translated at first use, so you can follow the file your notaire is building even from several hundred miles away. The stakes are high: a successful hidden-defect claim can cut the price by tens of thousands of euros or unwind the sale entirely, while a well-prepared file usually reduces the dispute to a negotiation you can handle calmly from home.<\/p>\n
French law puts the survey pack at the centre of every sale of a lived-in building. Article L271-4 of the Code de la construction et de l’habitation, the construction and housing code, provides: “En cas de vente de tout ou partie d’un immeuble b\u00e2ti, un dossier de diagnostic technique, fourni par le vendeur, est annex\u00e9 \u00e0 la promesse de vente ou, \u00e0 d\u00e9faut de promesse, \u00e0 l’acte authentique de vente.” Where all or part of a constructed building is sold, a technical survey file, supplied by the seller, is attached to the preliminary contract or, if there is none, to the official deed of sale. The promesse de vente is the preliminary sale contract, usually the compromis, and the acte authentique is the final deed signed before the notaire, the French public officer who completes conveyances. Read the article on Legifrance, article L271-4 of the Code de la construction et de l’habitation<\/a>. The official service-public.fr page for sellers lists the contents: the energy performance survey, the lead report for homes built before 1 January 1949, the asbestos statement where the building permit was “d\u00e9livr\u00e9 avant le 1er juillet 1997”, issued before 1 July 1997, the electricity and gas installation reports “si l’installation a plus de 15 ans”, where the installation is more than fifteen years old, the drainage report, the termite statement in delimited zones, the natural and technological risk statement and the noise survey. See the full checklist on service-public.fr, surveys to supply when selling a home<\/a>. Each survey must be drawn up by a certified professional, and an expired or missing survey gives the buyer a weapon after completion, so ask your notaire for the complete list for your d\u00e9partement, the French administrative county, before you sign the preliminary contract, because some surveys depend on the age of the building, the age of the installations and local orders.<\/p>\n The energy survey, the diagnostic de performance \u00e9nerg\u00e9tique or DPE, deserves its own warning, because its legal weight has changed completely. For years it was background information. In a decision of 21 November 2019, no. 18-23.251, the Cour de cassation recalled that “le DPE mentionn\u00e9 au 6\u00b0 de ce texte n’a, \u00e0 la diff\u00e9rence des autres documents constituant le dossier de diagnostic technique, qu’une valeur informative”, meaning the energy survey mentioned in that article had, unlike the other documents in the survey file, only an informative value. Read it on Cour de cassation, Third Civil Chamber, 21 November 2019, no. 18-23.251<\/a>. Since the reform that applies from 1 July 2021, the position is reversed: the ecology ministry states that the DPE has lost its merely informative character to become “pleinement opposable”, fully enforceable against the parties. A wrong rating today therefore carries far more legal consequence than the 2019 case suggests. Validity matters too. Surveys carried out since 1 July 2021 last ten years, and service-public.fr warns that surveys done between 1 January 2018 and 30 June 2021 have expired “depuis le 1er janvier 2025”, since 1 January 2025, and must be redone on a sale or letting. British owners who had a survey done years ago for a previous letting should therefore check the date before reusing it: the general rule is a survey “d’au maximum 10 ans”, no more than ten years old. The current definition of the survey is article L126-26 of the construction and housing code, on Legifrance, article L126-26 of the Code de la construction et de l’habitation<\/a>, and the practical rules are on service-public.fr, the energy performance survey<\/a>.<\/p>\n The 2019 decision is still the best map of what happens when the energy rating is wrong, and its lesson survives the reform. The surveyor had misjudged the property’s energy quality, and the buyers claimed the cost of insulation works. The Cour de cassation approved the appeal court’s answer: “le pr\u00e9judice subi par les acqu\u00e9reurs du fait de cette information erron\u00e9e ne consistait pas dans le co\u00fbt de l’isolation, mais en une perte de chance de n\u00e9gocier une r\u00e9duction du prix de vente”. The loss suffered by the buyers because of the wrong information was not the cost of insulation, but the lost chance to negotiate a reduction of the sale price (Cour de cassation, Third Civil Chamber, 21 November 2019, no. 18-23.251<\/a>). The perte de chance, the lost chance, is the French method for compensating a missed opportunity: the buyer recovers a proportion of the hoped-for price reduction, not the full works bill. Since the survey is now fully enforceable rather than merely informative, a buyer can rely on it more directly, which makes the surveyor’s fault easier to establish and the negotiation-loss argument stronger. For a British seller this has a concrete consequence. The buyer will usually sue the surveyor, the diagnostiqueur, first, but where the surveyor is insolvent, uninsured or simply wrong within a margin the courts tolerate, the disappointed buyer turns to the seller, arguing the seller knew the real position. A seller who lived with single-glazed windows, an oil-fired boiler from the 1980s and winter bills to match will struggle to claim surprise at a flattering A rating. Keep the surveyor’s engagement letter, the invoice, the insurance certificate and every document you gave the surveyor, because your action to pass the bill back to the surveyor depends on proving what you disclosed and what the surveyor did with it.<\/p>\n React the week you receive the surveys, not the week before completion. Read the energy rating the way a buyer will read it: compare the letter with your actual bills and with the physical reality of the house, and if a draughty stone farmhouse with electric radiators comes back rated C, ask the surveyor in writing to revisit before the rating enters the file. A second opinion from another certified surveyor costs a few hundred euros and either confirms the first rating, which closes the debate, or produces a corrected one you can substitute with the first surveyor’s agreement. Never instruct the surveyor to be generous, in writing or otherwise, because that message, once disclosed, destroys both your recourse against the surveyor and your credibility before the court. Tell the notaire about any survey that is close to expiry, since a rating that lapses between the preliminary contract and the final deed must be renewed, and a buyer who discovers at the signing table that the file is out of date will either demand a price cut or walk away. These steps cost little and they transform the survey pack from a formality into the shield it is meant to be.<\/p>\n Beyond the surveys, the general law of hidden defects, the garantie des vices cach\u00e9s, protects the buyer against serious flaws the seller did not disclose. Article 1641 of the Code civil, the civil code, states: “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.” The seller warrants hidden defects in the thing sold that make it unfit for its intended use, or reduce that use so much that the buyer would not have bought, or would have paid less, had the buyer known. Cracks from subsidence, a leaking roof hidden by fresh paint, dry rot in the timbers or a septic tank that does not work are the classic examples in village houses. Read the article on Legifrance, article 1641 of the Code civil<\/a>. Most French deeds contain an exclusion clause, by which the seller declares selling without warranty for hidden defects. Article 1643 sets its limit: “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.” The seller remains liable for hidden defects even without knowledge, unless the seller stipulated freedom from warranty. In practice the clause protects a private seller who genuinely knew nothing, and it protects no one who knew. See Legifrance, article 1643 of the Code civil<\/a>. The buyer’s remedies are a price reduction or the unwinding of the sale with restitution, and the action must be brought quickly. Article 1648 provides: “L’action r\u00e9sultant des vices r\u00e9dhibitoires doit \u00eatre intent\u00e9e par l’acqu\u00e9reur dans un d\u00e9lai de deux ans \u00e0 compter de la d\u00e9couverte du vice.” Proceedings for redhibitory defects must be started by the buyer within two years of discovering the defect. The vices r\u00e9dhibitoires are defects serious enough to undo the sale, and the clock runs from discovery, not from completion, which is why claims surface eighteen months after the move, when the first winter exposes the house. See Legifrance, article 1648 of the Code civil<\/a>.<\/p>\nB. Who pays when a survey is wrong: the surveyor, and sometimes you<\/h3>\n
II. When the buyer sues you after completion, and how to defend from the United Kingdom<\/h2>\n
A. Hidden defects, exclusion clauses, and the do-it-yourself trap<\/h3>\n