Notaire liable: sale of non-buildable land without information, a duty to inform purchasers

Imagine: you buy a plot of land in Tarnos, in the Landes, dreaming of building your dream house. You sign before the notaire, the project is clear, everyone knows you want to build. But a few days after the deed, you discover the land is not buildable. What to do? Who is at fault? The Court of Cassation ruled: the notaire, as drafter of the deed, has a duty to inform the purchasers, even if they had already learned of a negative planning certificate. A landmark decision that reminds all notaires of their duty to inform.

But what exactly does this change for you, as owner, purchaser or property professional? This 1990 decision remains an absolute reference in matters of notarial liability. It sets a simple principle: the notaire cannot simply record the sale. He must verify that the transaction is legally viable, and above all, he must inform the parties of any obstacle that would compromise their project. In other words, if you buy land to build, the notaire must ensure it is buildable. If he does not, he incurs liability.

Even today, this case law is invoked in dozens of disputes each year, particularly in the South-West where building land is scarce and expensive. So, how should you react if you are in this situation? And above all, how to avoid it? That is what we will see.

The facts: a story that happens every day

In 1983, Mr and Mrs Roux, a private couple, wished to acquire building land in the Landes. They set their sights on a plot in Tarnos, a rapidly expanding commune. The seller, a farmer, promised them the land was buildable. A notaire was instructed to draft the sale deed. In the deed, it was stated that the land was intended for the construction of a dwelling house. The Roux were confident: they had a notaire, a legal professional, who would check the situation.

However, even before the deed was signed, a surveyor instructed by the purchasers had applied for a planning certificate. This certificate, issued on 5 December 1983, indicated that the land was not buildable. But the Roux did not understand the significance of this document: they thought it was a mere administrative formality. The notaire, for his part, did not apply for a planning certificate himself. He relied on the seller's statements. The deed was signed, the price paid.

A few months later, the Roux applied for a building permit. Refused! The land was classified as agricultural zone, non-buildable. It was a disaster: they had bought land that could not accommodate their house. They then brought legal proceedings against the notaire, alleging that he had failed to inform them of the non-buildable nature of the land. The seller had disappeared or was insolvent. The notaire was therefore their only recourse.

Before the Tribunal de Grande Instance, the notaire defended himself: he argued that the Roux had been aware of the negative planning certificate before the sale, through the surveyor. Therefore, according to him, they were informed. The notaire's fault would have no causal link with the damage. But the judges did not follow him. The case went up to the Court of Cassation, which delivered its judgment on 12 June 1990.

The court's reasoning — dissected

The Court of Cassation had to answer a specific question: can the notaire be discharged from liability if the purchaser had already become aware, by other means, of the defect affecting the property? In other words, does the fact that the Roux knew the land was not buildable (via the planning certificate) exonerate the notaire?

The Court answered: no, and this is a landmark judgment. It recalled that the notaire, as drafter of the deed, has a duty to enlighten the parties. He must not only verify the legal situation of the property, but also ensure that the deed corresponds to the purpose pursued by the purchasers. Here, the deed stated that the land was intended for the construction of a house. The notaire could not therefore ignore that this purpose was impossible to achieve. He should have refused to draft the deed or, at the very least, warned the purchasers of the ineffectiveness of the sale with regard to their project.

The Court went further: even if the purchasers had been aware of the negative planning certificate before the deed, that does not discharge the notaire. Why? Because the notaire is a legal professional, and the purchasers are laypersons. What few people know is that the notaire's duty to inform is reinforced: he must not only provide the information, but also ensure it is understood. The Roux, ordinary private individuals, might not have appreciated the consequences of a negative planning certificate. The notaire, on the other hand, should have explained it to them clearly.

The legal basis is Article 1382 of the Civil Code (now 1240), which provides that "any act of a person which causes damage to another obliges the person by whose fault it occurred to repair it." The notaire's fault is established: he failed in his duty to advise. The damage is obvious: the Roux bought land useless for their project. The causal link is direct: if the notaire had informed them, they would not have bought. The Court rejected the notaire's argument and upheld his liability.

This decision is a confirmation of previous case law, but it tightens it: the notaire cannot hide behind the purchaser's personal knowledge, especially if the purchaser is a layperson. This is a landmark judgment still cited today.

What this changes for you — concretely

For you, a purchaser of building land, this decision is a protection. If you buy land for the purpose of building, and the notaire does not check buildability, you can hold him liable. However, note: the purpose must be stated in the deed. If the deed does not specify that you want to build, the notaire is not required to guess. So, at the time of signing, insist that the deed mentions your project. In other words, if you are an owner in Dax and you sell land, be transparent about buildability. Otherwise, the notaire could be held liable in your place, but you could also be sued for fraudulent misrepresentation.

For property professionals (agents, developers), this decision reminds you that the buildability of land is crucial information. If you sell non-buildable land without saying so, you incur liability. And the notaire, in checking the deed, may report you.

undefined, I have come across cases where purchasers bought land in Tarnos to build their main residence. The notaire did not check the planning certificate. Result: permit refused, land unsaleable. The notaire was ordered to reimburse the purchase price, notarial fees, and even moving expenses. That is several tens of thousands of euros. But beware: the notaire's fault must be proven. If you were informed but bought anyway, the notaire will not be liable.

If you are in this situation, you must act quickly. The limitation period (time to act) is 5 years from the discovery of the defect. Generally, it is the refusal of the building permit that starts the clock. Do not wait!

Four tips to avoid this type of dispute

• Insist on a planning certificate before signing. Ask the seller or the notaire to obtain a planning certificate from the town hall. This document tells you whether the land is buildable and what the planning rules are. Do not rely on verbal promises. In Tarnos, for example, some areas are classified as protected woodland, which prohibits any construction.
• Have your project specified in the sale deed. The deed must explicitly state that you are buying to build a dwelling house. Thus, the notaire will be obliged to check feasibility. If he does not, his liability will be engaged.
• Consult a lawyer lawyer before signing. A property lawyer can review the deed and alert you to risks. For example, Maître Cécile Zakine practises in Mont-de-Marsan and throughout the South-West. A 30-minute consultation (€45) can save you years of litigation.
• Do not rely on old planning certificates. A planning certificate is valid for 18 months. If it is older, it may no longer reflect the current situation. Insist on a recent certificate, dated less than 3 months.
• If in doubt, apply for an operational planning certificate. This certificate tells you precisely whether the land can accommodate your building project. It is more reliable than a simple information certificate.

Besoin d'un conseil personnalisé ? Contactez Maître Zakine — première consultation 30 min à 45€.

Further reading: related case law and developments

This decision of the Court of Cassation is part of a line of judgments that strengthen the notaire's liability. Before 1990, some courts considered that the notaire did not have to check buildability if the purchaser was aware of the problem. But since this judgment, the trend is clear: the notaire must be proactive. For example, a 1999 decision (Civ. 1re, 16 March 1999) confirmed that the notaire must inform the purchaser of the existence of a restrictive land use plan (POS), even if it has not yet been approved. Another example: in 2005, the Court held a notaire liable for failing to indicate that land was in a flood zone, whereas the purchaser wanted to build.

What this means for the future: notaires are increasingly vigilant, but disputes persist. The ALUR law of 2014 reinforced information obligations in planning matters, but the judge remains the ultimate guarantor. Note, however: since 2020, some appeal courts have mitigated the notaire's liability if the purchaser is a property professional, considered as a knowledgeable party. But for a private individual, protection remains maximum.

Frequently asked questions

Can I sue the notaire if I bought non-buildable land without knowing it?
Yes, if the sale deed mentioned your intention to build and the notaire did not check buildability. You must prove the notaire's fault and the damage suffered (price of land, costs, etc.).

What if my notaire tells me the land is buildable, but the town hall tells me the opposite?
Do not sign the deed. Ask for a written planning certificate from the town hall. If the notaire insists, change notaire. You can also consult a lawyer.

What are the time limits to sue the notaire?
The limitation period is 5 years from the discovery of the defect (e.g., the refusal of a building permit). After that, you lose any recourse.

Can the notaire be ordered to reimburse me the full price of the land?
Yes, courts often order the notaire to reimburse the purchase price, notarial fees, and sometimes damages for non-pecuniary loss. But it depends on the circumstances.

If I bought land in Tarnos and want to build, should I consult a local lawyer?
It is recommended to consult a lawyer specialising in property law, who knows local specifics (local plans, flood zones, etc.). Maître Cécile Zakine practises in the Landes, in Mont-de-Marsan, Dax and Tarnos.

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