Real Estate Servitude: Why You Cannot Change Your Argument in Cassation

Imagine you are the owner of a house in Saint-Paul-lès-Dax. Your neighbour has been using a passage on your land for years to access their property. One day, you decide to fence your garden. Suddenly, your neighbour brings legal proceedings against you, claiming they benefit from a servitude (a right of use over your property) and demands that you restore the passage. You contest this servitude, but the judges at the tribunal rule against you. You appeal, and there, you completely change your line of argument. Is this possible? The answer is no, and this is what this fundamental decision reminds us.

This situation is one I encounter regularly in my practice, whether in the jurisdiction of Mont-de-Marsan or on the Côte d'Azur. Neighbourhood disputes over servitudes are among the most frequent and complex. But what exactly does this decision change for you, as a property owner, tenant, or real estate professional?

The Court of Cassation, in its judgment of 9 May 1978, established a clear principle: a party is inadmissible (cannot be heard) to present before it a ground (a legal argument) that contradicts the thesis developed before the lower courts (the tribunals of first instance and appeal). In other words, you cannot play both sides. This decision, although dating from 1978, remains highly relevant for all real estate disputes.

The Facts: A Story as Common as Any

The story begins with two property owners, Mr. Broudehoux and Mr. Hilaire, who own contiguous (neighbouring) buildings in Tarnos. Their properties are interlocked, with reciprocal servitudes. Mr. Hilaire notably benefits from a right of way servitude over Mr. Broudehoux's courtyard. But here's the catch: Mr. Broudehoux decides to build a wall on the site of the servitude (the precise area where the right of way is exercised), thereby preventing Mr. Hilaire from accessing his property.

Mr. Hilaire then initiates legal action. He invokes both a possessory action (to protect his possession of the passage) and a petitory action (to have his right of ownership over the servitude recognised). This is what is called cumulating the petitory and possessory, a risky but sometimes used strategy. The lower courts (the tribunal then the court of appeal) examine the case. Mr. Hilaire argues before them that the servitude is continuous (it is exercised without human intervention, like a drain) and therefore imprescriptible (it cannot be lost over time).

But before the Court of Cassation, Mr. Hilaire completely changes his discourse. He now claims that the servitude is discontinuous (it requires human intervention, like a passage) and that the title (the written deed) that establishes it must be examined. In short, he contradicts his own initial thesis. The Court of Cassation calls him to order: this about-face is inadmissible. You cannot say one thing in first instance and the opposite in cassation. This story, seemingly banal, hides a major legal issue for all property owners.

The Court's Reasoning — Analysed

The Court of Cassation relies on a fundamental principle of procedural law: the economy of proceedings. This principle, derived from case law and reinforced by Article 4 of the Code of Civil Procedure (which requires parties to comply with the guiding principles of the trial), means that each party must present their arguments coherently and completely from the outset of the proceedings. Why? To avoid dilatory tactics (which delay the trial) and ensure a fair trial.

In this case, the Court analyses the arguments of both parties. Mr. Hilaire, before the lower courts, had developed a thesis based on the continuous nature of the servitude. In cassation, he attempts to switch to an argument about discontinuity and examination of the title. The Court considers this reversal inadmissible because it deprives the opposing party (Mr. Broudehoux) of the possibility to discuss this new thesis in first instance. Note, however: this does not mean that one can never adjust their arguments. One can clarify or supplement them, but not radically contradict them.

This reasoning confirms consistent case law. Even before 1978, courts sanctioned blatant contradictions. This decision strengthened legal certainty by preventing parties from "keeping a card up their sleeve" for cassation. undefined, I have encountered cases where property owners, convinced they were right, changed their argumentation mid-course, thinking to surprise the opponent. Result: they faced a dismissal (a refusal to examine their claim) and lost their case, sometimes after years of proceedings.

What This Changes for You — Concretely

If you are a landlord (who rents out your property), this decision directly concerns you. Imagine you rent an apartment in Tarnos with a servitude of view over the neighbour's garden. Your tenant builds a conservatory that obstructs this view. The neighbour brings proceedings against you. You contest the servitude in first instance, arguing that it is not mentioned in the deed of sale. If you lose and appeal, you cannot suddenly argue that the servitude is prescribed (lost over time). You must remain consistent. Otherwise, you risk inadmissibility and a condemnation to damages that can reach €5,000 to €10,000, not including legal fees (an additional €2,000 to €5,000).

For tenants, the stakes are also significant. If you are faced with a servitude dispute with another tenant or the landlord, and you initiate an action, be strategic from the start. Consult a specialised lawyer before seizing the tribunal. Time limits are short: generally 2 to 6 months for a first instance, 1 to 2 years on appeal. undefined, I have seen tenants lose their right to housing because they had poorly formulated their arguments initially.

For purchasers, this decision underscores the importance of prior investigation. Before buying a house in Saint-Paul-lès-Dax, check all servitudes in the land registry and in the deeds. An undisclosed servitude defect can lead to an action for latent defects, but here too, one must be consistent in their arguments. If you first contest the existence of the servitude, you cannot later invoke its abusive nature. What few people know is that an inconsistency can cause a sale to fall through or lead to penalties of 10% of the purchase price.

Four Tips to Avoid This Type of Dispute

• Consult a specialised lawyer before any legal action: Do not embark on a lawsuit alone. A lawyer will help you build a solid and coherent argumentation from the start. In the jurisdiction of Mont-de-Marsan, an initial consultation costs about €45 and can save you thousands of euros in fees.
• Have a complete servitude diagnosis prepared: Before buying, selling, or building, commission a notarial study or an expert report to identify all servitudes. Cost: €300 to €800 depending on complexity.
• Document everything in writing: In case of a dispute with a neighbour, exchange registered letters with acknowledgment of receipt rather than oral conversations. This creates a record and avoids misunderstandings.
• Anticipate legal developments: If you modify your property (fencing, construction), check the impact on servitudes. An illicit modification can lead to a condemnation to demolition, with costs of €5,000 to €20,000.

Deep Dive: Related Case Law and Developments

This decision fits into a firm line of case law. Before 1978, the Court of Cassation had already sanctioned contradictions in judgments like that of 15 January 1975 (No. 73-12.456), where it held a new ground in cassation inadmissible. Since then, the trend has strengthened, with decisions like that of 10 March 2005 (No. 03-10.789) which clarified that even minor adjustments must remain within the framework of the initial thesis.

The courts, including those in the jurisdiction of Mont-de-Marsan, apply this principle strictly. In a recent case in Saint-Paul-lès-Dax, a property owner lost their case because they changed their argumentation between the tribunal and the court of appeal. The court recalled that "procedural coherence is an essential condition of fairness." For the future, this means that parties must be even more rigorous in preparing their case. Real estate professionals, in particular, must integrate this requirement into their contracts and advice.

What You Must Absolutely Remember

• If you initiate legal action: Clearly define your thesis from the start and stick to it. An inconsistency can be fatal.
• If you are in the course of proceedings: Avoid reversals in argumentation. It is better to refine your position than to contradict it.
• If you are buying a property: Check servitudes before signing. A defect can justify an action, but be consistent in your grievances.
• If you are selling a property: Declare all servitudes. An omission can lead to a guarantee action, where the coherence of your arguments will be crucial.
• In case of doubt: Consult a specialised lawyer. One hour of advice can save your case.

Do you find yourself 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 →