Sale of land to be taken from a larger plot: determination of the property by boundary survey

Imagine the scene: in Guéret, in the Creuse, a landowner sells a plot of four hectares, but specifies that the exact area (zero hectares eight ares) will be determined after a boundary survey (operation of delimitation of properties). The buyer must choose where to take this area within a larger plot. The two parties sign a plan, but later, one of them challenges the validity of the sale, arguing that the land was not sufficiently determined. This is exactly the case that the Court of Cassation decided in 1984. But what does it change for you?

The facts: a story like many that happen every day

Mr. X, owner of a large plot in Guéret, decides to sell part of it to Mr. Y. The deed of sale mentions an area of four hectares, but specifies that the sold plot is to be taken from a larger plot, and that its exact delimitation will be fixed by a subsequent boundary survey. In the meantime, the seller leaves the choice of location to the buyer. A surveyor draws up a plan, signed by both parties. Yet a dispute arises: the buyer considers the sale void because the property sold was not determined at the time of signing.

The Court of Appeal of Limoges rules in favour of the buyer, considering that the signed plan did not constitute an official boundary survey. The seller appeals to the Court of Cassation. The case goes up to the Court of Cassation, which quashes the appeal decision. For the supreme judges, since the parties agreed that the delimitation would be fixed by a boundary survey and the seller left the choice to the buyer, the property was sufficiently determinable on the day of the sale. In short, the sale is valid, and the boundary survey only serves to provide precision.

The reasoning of the court — dissected

The central legal question is that of the determination of the thing sold. According to Article 1129 of the Civil Code (now 1163), the sale is void if the object is neither determined nor determinable. Here, the Court of Appeal had ruled that the plot was not determined because the signed plan did not constitute an official boundary survey. But the Court of Cassation corrects this: the parties' agreement on the principle of a future boundary survey, coupled with the fact that the seller left the choice to the buyer, suffices to make the property determinable.

In other words, the judges consider that the will of the parties prevails over formalities. What few people know is that the Court of Cassation distinguishes here between determination (the property must be identifiable) and precise delimitation (which can come later). undefined, I have encountered cases where sales were annulled for lack of sufficient precision. But this 1984 decision established a clear principle: if the parties agree on the area and the principle of a boundary survey, the sale is valid. However, this reasoning assumes that the buyer genuinely has a choice, not a mere illusory option.

What this changes for you — concretely

For a landlord-owner in Panazol, this decision is reassuring: if you sell part of your land without having it surveyed beforehand, you can do so afterwards, provided the buyer has accepted this method of fixing. For a buyer, however, it is a signal for caution: if you sign a deed with an area to be determined, ensure that the boundary survey is carried out quickly, otherwise you risk a dispute over the actual boundaries. Concrete example: Mr. Dupont buys 1,000 m² to be taken from a field of 2 hectares in Panazol. The seller leaves him the choice of location. A year later, the boundary survey reveals that the chosen area encroaches on the neighbour's land. The seller may then be held liable, but the sale remains valid. If you are in this situation, you must insist on a boundary survey in the presence of both parties before signing, or failing that, a clause providing that the lack of a boundary survey may lead to a reduction in price. Timelines? The boundary survey can take 2 to 6 months depending on complexity. Cost: between €1,000 and €3,000, often borne by the seller unless otherwise agreed.

Four tips to avoid this type of dispute

• Have an official boundary survey carried out by a chartered surveyor before the sale, especially if the land results from a recent division.
• Include in the deed of sale a clause providing that the boundary survey will be carried out within a specified period (e.g. 6 months) and that its cost is borne by the seller.
• If the buyer must choose the location, have it materialised by a plan annexed to the deed, with physical markers (boundary stones, trees, walls).
• In case of dispute, do not delay consulting a lawyer: the limitation period for challenging a sale is 5 years from the date of signature.

Further reading: related case law and developments

This 1984 decision is part of a consistent line: the Court of Cassation has always favoured the validity of sales when the parties have manifested a clear intention, even if the delimitation is imperfect. Thus, a decision of 21 January 1975 (no. 73-13.743) had already recognised that a sale concerning part of a lot is valid if the parties leave it to a subsequent boundary survey. Conversely, if the seller retains the right to choose the location himself, the sale may be annulled for indeterminacy (Cass. civ. 3e, 9 March 2005, no. 03-18.651). The trend is therefore to validate sales provided that the buyer has control over the choice. For the future, with the multiplication of plot divisions (ALUR law, etc.), this case law remains relevant: a prior boundary survey is always recommended, but its absence does not automatically render the sale void.

Summary and next steps

FAQ:

1. Q: Can I cancel a sale if the land has not been surveyed? A: No, if the deed provides for a future boundary survey and the buyer has chosen the location. The sale is valid.
2. Q: What if the boundary survey is never carried out? A: You can apply to the court to order a judicial boundary survey. The cost will be shared between the parties.
3. Q: Can the seller change his mind about the location? A: No, if he left the choice to the buyer in the deed, he is bound.
4. Q: What is the deadline to challenge a boundary survey? A: 5 years from its completion, except in cases of fraud.
5. Q: Can I sell land without a boundary survey? A: Yes, but you run the risk of a dispute over boundaries. Better to do it beforehand.

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 →