Neighbourhood disturbance: when the district judge can no longer rule in interim proceedings

Imagine: you are an owner in Camiers, in the Somme. For months, your neighbour has been installing a fence that encroaches two metres onto your land. You sue them before the district judge for possessory disturbance (interference with your right to peaceful enjoyment). The judge declares your claim inadmissible. You think it's over? Not at all: your neighbour, for their part, sues you in interim proceedings (urgent procedure) for manifestly unlawful disturbance, and the same judge, this time in interim proceedings, orders you to remove your own fence. This is the scenario experienced by the Y... parties in the case decided by the Court of Cassation on 6 April 2005.

This decision, rendered under number 02-21.518, answers a crucial question: can a judge, after having finally ruled on a possessory disturbance matter, consider the same facts from another angle? The answer is no, and it has direct consequences for any litigant facing a neighbourhood dispute. But why such strictness? And what to do if you are in this situation, in Amiens or elsewhere? Analysis.

The issue is simple: to avoid contradictory decisions being made on the same facts. The Court of Cassation here recalls the principle of res judicata (once a judgment is final, it cannot be revisited). But in practice, the boundary between possessory disturbance and manifestly unlawful disturbance is often blurred. Let us look at the facts in detail.

The facts: a story that happens every day

In Camiers, a seaside resort on the Opal Coast, the X... spouses and the Y... parties are neighbours. A dispute arises: the Y... parties believe that the X... spouses have built a wall encroaching onto their property. In March 2000, the Y... parties sue the X... spouses before the district judge of Amiens, on the basis of possessory disturbance (Article 1264 of the Code of Civil Procedure, which protects peaceful possession). The district judge renders a judgment on 12 September 2000: he declares the claim inadmissible, considering that the Y... parties do not prove a valid possession (peaceful, continuous, unambiguous). This judgment becomes final for lack of appeal.

But the matter does not end there. The X... spouses retaliate: they sue the Y... parties before the same district judge, but this time in interim proceedings (accelerated procedure) for manifestly unlawful disturbance, on the basis of Article 849 of the Code of Civil Procedure (predecessor of current Article 835). They seek demolition of the wall. The interim judge, who is the same magistrate who ruled on the merits, grants their request on 20 June 2001: he finds the existence of a manifestly unlawful disturbance and orders restoration of the premises. The Y... parties are ordered to demolish the wall, subject to a penalty payment (daily fine in case of delay).

The Y... parties appeal to the Court of Cassation. Their argument: the district judge, having already finally ruled on the possessory disturbance, could no longer, as interim judge, hear the same dispute under the angle of manifestly unlawful disturbance. This is exactly what the Court of Cassation upholds in its judgment of 6 April 2005.

The reasoning of the court — dissected

The Court of Cassation quashes (annuls) the judgment of the Court of Appeal of Versailles which had confirmed the interim order. Its reasoning is summed up in one sentence: 'A district judge having, by an irrevocable decision, declared inadmissible a claim based on possessory disturbance cannot then, as interim judge, find the existence of a manifestly unlawful disturbance by application of Article 849 of the new Code of Civil Procedure.'

The legal basis is twofold. On the one hand, res judicata (Article 480 of the Code of Civil Procedure): a final decision binds everyone, including the judge himself. On the other hand, the distinction between possessory (protection of possession) and petitory (right of ownership). Possessory disturbance falls within the jurisdiction of the district judge ruling on the merits; manifestly unlawful disturbance falls within the jurisdiction of the interim judge, who may take protective (provisional) measures to stop an obvious disturbance. But when the judge has already examined the facts on the merits and declared them inadmissible, he cannot re-examine them in interim proceedings.

In this case, the district judge had already ruled that the Y... parties did not justify sufficient possession to act. In doing so, he had implicitly decided that the facts did not constitute a possessory disturbance. Yet, the manifestly unlawful disturbance invoked by the X... spouses was based on exactly the same facts (the encroachment of the wall). The interim judge could not therefore contradict this assessment. The Court of Cassation considers that the Court of Appeal did not draw the legal consequences of its own findings.

This decision is neither a reversal nor a mere confirmation: it clarifies the limits of the interim judge's power. Before 2005, some courts admitted that the interim judge could hear a manifestly unlawful disturbance even if the judge on the merits had already ruled on the possessory, provided that the legal bases were different. The Court of Cassation puts an end to this hesitation: the identity of facts prevents any new debate.

What this changes for you — practically

If you are an owner-landlord in Amiens and your tenant complains of noise nuisances from a neighbour, you must know that an action for possessory disturbance (before the district judge) and an interim action for manifestly unlawful disturbance are two distinct paths, but they cannot be used successively for the same facts. If you lose on the possessory, you cannot 'make up for it' in interim proceedings.

Let us take a concrete example: in Amiens, an owner sues his neighbour for an encroachment of 3 m². The district judge declares the claim inadmissible because the owner does not prove continuous possession for 30 years. If the neighbour, for his part, obtains an interim order to demolish a fence, the owner can invoke the 2005 decision to have that order annulled. Cost of such a mistake: lawyer's fees (€1,500 to €3,000), possible penalty payment (€50 to €200 per day), not to mention demolition at his own expense.

If you are a buyer of a property in Camiers, check before buying whether there are ongoing proceedings between neighbours. An irrevocable decision on the possessory can block any subsequent interim action, which may leave you without recourse if you inherit the dispute.

For co-owners: if your management company brings an action for neighbourhood disturbance, ensure that the chosen basis (possessory or interim) is the correct one. A wrong choice may permanently close the door to the judge.

Four tips to avoid this type of dispute

• Consult a lawyer before any action: do not start proceedings without knowing whether you should act in possessory or interim proceedings. A 30-minute consultation (€45 with Maître Zakine) can save you from being stuck.
• Do not accumulate actions on the same facts: if you already have a final decision on a possessory disturbance, do not hope to succeed in interim proceedings. Attack directly on the petitory (right of ownership) if you can.
• Gather solid evidence: photos, bailiff's reports, witness statements. The district judge requires 'valid' possession: peaceful, continuous, unambiguous. Without proof, your claim will be inadmissible.
• Mediation or conciliation: before suing, try an amicable settlement. In Amiens, the justice conciliator can help you for free. An agreement avoids the risk of an irrevocable decision that closes other avenues.

Further reading: related case law and developments

The judgment of 6 April 2005 is part of a consistent line of case law: the Court of Cassation ensures that res judicata is not circumvented by a change of legal basis. One can cite a judgment of 12 February 2003 (No. 00-11.037) where the Court had already ruled that an interim judge cannot contradict a final decision on the merits that has become res judicata.

Since 2005, case law has further evolved: Article 849 of the Code of Civil Procedure became Article 835, but the principle remains identical. Courts are increasingly strict on the distinction between possessory and petitory. For example, a judgment of the Court of Appeal of Douai (jurisdiction of Amiens) in 2018 applied the same rule for a party wall.

The trend is therefore clear: it is better to choose the right action from the outset, on pain of losing all recourse. For the future, we can expect judges to require more precise reasoning from claimants on the chosen legal basis.

Checklist before acting

FAQ: 5 key questions

1. What is the difference between possessory disturbance and manifestly unlawful disturbance? Possessory disturbance protects your possession (the fact of enjoying the property); manifestly unlawful disturbance aims to stop an obvious illegal situation (e.g., construction without planning permission). The former is judged on the merits, the latter in interim proceedings.
2. Can I act in interim proceedings after a final decision on the possessory? No, if the facts are the same. The Court of Cassation prohibits it.
3. What to do if my neighbour sues me in interim proceedings when I have already won on the possessory? Invoke the judgment of 6 April 2005 to request dismissal of his claim. Contact a lawyer promptly.
4. What time limits to act? In matters of possessory disturbance, you must act within one year of the disturbance (Article 1264 of the Code of Civil Procedure). In interim proceedings, urgency is required.
5. How much does a procedure cost? Count €1,500 to €5,000 in lawyer's fees, plus possible bailiff and expert fees. A preliminary consultation at €45 can save you these costs.

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 →