Buying a property in France often comes with a romanticised image of peaceful countryside living or quiet city elegance. The reality can be different. Noise from a neighbouring restaurant’s extractor fan, construction vibrations that crack your walls, overhanging branches from a neighbour’s century-old oak, a newly built wall blocking the light into your living room, or a neighbour who regularly waters your garden with a hose and throws rat poison into your flowerbeds — these are not rare occurrences. They are the everyday substance of what French law calls troubles anormaux du voisinage (abnormal neighbourhood disturbances).

This legal regime is one of the most powerful and distinctive features of French property law. It allows any occupant — owner, tenant, or even a spouse living in a home owned by their partner — to obtain compensation or a court order to stop a disturbance, without needing to prove that the neighbour was at fault. Codified in Article 1253 of the French Civil Code since April 2024, this strict liability principle has deep roots in case law stretching back to the nineteenth century. For a foreign buyer unfamiliar with the French legal landscape, understanding how it works can make the difference between a resolvable dispute and a long, costly nightmare.

The doctrine has been applied to an extraordinarily wide range of situations. The case law includes a neighbour whose wood-burning stove exhausted fumes directly onto an adjoining patio (Tribunal judiciaire d’Évreux, 11 September 2025, no. 22/01381), a co-owner who deliberately blocked a neighbour’s garden irrigation and threw toxic substances into their property (Tribunal judiciaire de Paris, 11 July 2025, no. 22/07557), and a case where a new building’s construction obliterated the only windows of an adjacent apartment, leaving the common staircase in permanent darkness. Each of these produced a finding of liability and, in several cases, a court order for demolition or remedial works under penalty of daily fines — astreintes in French procedural parlance.

I. The Legal Foundations: Strict Liability Without Proof of Fault

A. From Judge-Made Principle to Article 1253 of the Civil Code

For nearly two centuries, the rule that nul ne doit causer à autrui un trouble anormal de voisinage — no one may cause another an abnormal neighbourhood disturbance — was a purely judge-made principle. The Cour de cassation first articulated it in a landmark ruling of 19 November 1986, grounding it in a creative reading of Article 544 of the Civil Code. That article states that property is the right to enjoy and dispose of things in the most absolute manner, provided that no use is made of them prohibited by law or regulation. The courts reasoned that the right to enjoyment contained an implicit limit: one cannot use one’s property in a way that imposes burdens on a neighbour exceeding what is normal in a given environment.

The loi n° 2024-346 du 15 avril 2024 transformed this judicial construction into a codified rule. Article 1253 of the Civil Code now provides that “the owner, the tenant, the occupant without title, the holder of a title whose main purpose is to authorise the occupation or exploitation of a plot, the maître d’ouvrage (project owner) or the person exercising its powers who is at the origin of a disturbance exceeding the normal inconveniences of neighbourhood is strictly liable for the resulting damage.” This is a strict liability regime. The victim does not need to prove negligence, intention, or breach of a regulatory standard. They need only establish that the disturbance is real, attributable to the defendant, and abnormal in its intensity or duration.

This was already the state of the case law. As the Tribunal judiciaire de Pontoise noted in its judgment of 6 February 2026 (no. 23/03288), the principle pre-existed the entry into force of the new article and already imposed liability “de plein droit” — of right, without proof of fault — on the person responsible for a disturbance exceeding the inconveniences it is usual to bear between neighbours. The codification changes nothing in substance; it merely consolidates a rule that the civil courts had applied for decades.

B. Who Can Sue and Who Can Be Sued

One of the most important recent clarifications from the Cour de cassation concerns standing to bring a claim. In a decision of 20 November 2025 (Cass. 3e civ., no. 24-16.342), the Court held that a spouse who cohabits with the owner of a home has standing to sue for an abnormal neighbourhood disturbance for the personal harm it causes them. The court of appeal had declared the wife’s claim inadmissible on the ground that she was neither the owner nor held a personal title of occupation. The Cour de cassation reversed, holding that a trouble anormal du voisinage claim is an action in extra-contractual civil liability that, independently of any fault, allows the victim to seek compensation from the owner of the building at the origin of the disturbance, who is liable of right — and that this victim can be any occupant, whatever the legal basis of their occupation.

This is significant for foreign buyers. If you purchase a French property and live in it with a spouse or partner who is not on the title deed, both of you have standing to bring a claim against a neighbour whose activities cause an abnormal disturbance. The Cour de cassation cited its own earlier decision of 16 March 2022 (no. 18-23.954, published) as the foundational authority for treating troubles anormaux du voisinage as a strict extra-contractual liability regime.

The range of potential defendants is equally broad. Article 1253 lists the owner, the tenant, the occupant without title, the holder of an occupational title, and the project owner or their delegate. A neighbour who rents out their property to a noisy tenant remains liable in their capacity as owner. A construction company carrying out works that cause structural damage to an adjacent building is liable as the project owner.

The Cour de cassation further strengthened the access to justice dimension of this regime in its ruling of 18 June 2026 (Cass. 3e civ., no. 25-11.778). The Paris Court of Appeal had declared a property company’s claim inadmissible because it had not proven that its windows, which had been blocked by the neighbour’s construction, were lawful under planning rules or had acquired a servitude of view by thirty-year prescription. The Cour de cassation reversed, holding that standing to bring an action is not conditional on prior proof of the merits of the claim, and the victim’s demonstration of the abnormal nature of the alleged disturbance is a condition of success, not of admissibility. In plain English: you do not need to prove your case before you can file it.

II. What Counts as Abnormal: The Court’s Assessment in Practice

A. Noise, Construction Damage, Loss of Light and View

The central question in any trouble anormal claim is whether the disturbance exceeds the ordinary inconveniences of neighbourhood life. This assessment is inherently contextual. A certain level of noise is normal in a city centre; the same level may be abnormal in a rural hamlet. A restaurant’s extractor fan is an ordinary incident of urban life; the constant rumble of a heavy goods vehicle loading bay at 4 a.m. may not be.

Noise is the most common complaint. In a case decided on 26 September 2024 (Cass. 3e civ., no. 22-24.070), the Cour de cassation addressed a dispute between the co-owners of a building in Aix-en-Provence and the operators of a neighbouring restaurant and tea room, whose terrace and garden caused what the claimants described as unbearable noise and odour nuisances. The court of appeal had rejected the claims on the ground that the building permit was definitive and therefore there was no breach of planning rules, and that the alleged noise had not been proven. The Cour de cassation reversed, holding that a third party who claims to suffer damage from a breach of planning rules is not required to prove the existence of an abnormal neighbourhood disturbance. In other words, where a neighbour’s activity violates planning regulations, the victim has a separate path to compensation under Article 1240 of the Civil Code — the general tort provision — without needing to meet the higher threshold of proving an abnormal disturbance.

Construction damage is another frequent source of litigation. The ruling of 5 February 2026 (Cass. 3e civ., no. 24-10.317) involved a property developer who had constructed a residential building with two levels of underground parking on a plot adjacent to an existing house. The excavation and foundation works caused cracks in the neighbouring building. The Cour de cassation upheld the finding that this constituted a trouble anormal de voisinage and confirmed the developer’s strict liability. However, it also approved the apportionment of 20% of the liability to the developer itself — rather than passing it all to the contractors — because the developer, an experienced property promoter, had made a deliberate choice, ignoring the adverse opinions and recommendations of its technical controller, not to carry out underpinning works on the neighbouring building because they represented an additional cost not accounted for in the project’s financial plan, thereby knowingly accepting the risk of causing damage to neighbouring buildings.

Loss of light and view is a specifically French concern, and one that often surprises foreign buyers. In a complex case decided on 23 November 2023 (Cass. 3e civ., no. 22-11.047), a co-owner in Rennes had built a new house on his plot that blocked three windows of a neighbouring building, including the only window lighting the common staircase. The court of appeal had rejected the neighbours’ claims, partly on the ground that some of them had acquired their property after the situation was already created. The Cour de cassation reversed on a crucial point of principle: the anteriority of the disturbance does not deprive the victim neighbour of their right to compensation for the persistence of that disturbance. Even if you bought a property knowing that a neighbour’s wall blocked your window, you can still sue for the ongoing harm. There is no “coming to the nuisance” defence in French law.

However, there is one important temporal rule introduced by Article 1253 itself. Under the second paragraph, strict liability does not apply “when the abnormal disturbance comes from activities, whatever their nature, that existed prior to the act transferring ownership or granting enjoyment of the property or, in the absence of an act, prior to the date on which the injured person took possession.” The activity must be lawful and must have continued under the same conditions or under new conditions that do not aggravate the abnormal disturbance. This is the statutory translation of the former judicial doctrine of pré-occupation (prior occupation), and it protects, for example, a farm whose noise or smells predate the construction of a new housing development — the classic example that led to the legislative intervention.

B. Trees, Boundaries, and the Everyday Irritations

Not all troubles anormaux involve construction cranes or restaurant terraces. Some are as modest — and as infuriating — as a neighbour’s tree growing over your boundary or their gutters discharging rainwater onto your land.

French law contains specific provisions on trees and boundaries that operate alongside the general trouble anormal framework. Article 671 of the Civil Code prescribes minimum distances for plantations relative to the dividing line: two metres for trees and shrubs exceeding two metres in height, and half a metre for smaller plants. These distances may be varied by local regulations or established local custom. Article 672 gives the neighbour the right to demand that trees planted at less than the legal distance be uprooted or reduced to the prescribed height, unless there is a title, a destination by the père de famille (a legal concept involving a common owner who created the situation before division), or thirty-year prescription. If the offending trees die or are cut, replacements must comply with the legal distances.

These are hard-edged rules, distinct from the trouble anormal analysis. A tree planted 1.5 metres from the boundary, in violation of Article 671, can be ordered removed even if its presence causes no subjective inconvenience. The neighbour does not need to prove abnormality, only the breach of distance. This is a powerful weapon for a foreign buyer who discovers — as many do — that a neighbour’s mature cypress hedge or sprawling oak was planted too close to the boundary decades ago. The passage of time does not extinguish the right, because the right to demand compliance with Article 671 is imprescriptible so long as the offending trees remain standing.

Beyond trees, the statutory servitudes légales of Article 651 impose reciprocal obligations between neighbours independently of any agreement: obligations concerning party walls and ditches, distances for constructions, views, and the flow of water. A neighbour who builds a wall or plants a hedge that causes rainwater to accumulate and seep into your cellar may be liable both under these specific provisions and under the general trouble anormal theory. The two grounds can be pleaded cumulatively.

For damage caused by a neighbour’s fault — as opposed to strict liability for abnormal disturbance — the general tort provision of Article 1240 of the Civil Code provides that “any act whatsoever of a person that causes damage to another obliges the person through whose fault it occurred to make reparation.” Where a neighbour intentionally or negligently causes harm — by, for instance, deliberately blocking a drain or cutting a tree without authorisation — Article 1240 offers an additional, complementary path to compensation, with the advantage of a five-year limitation period from the date the victim knew or should have known of the damage, as confirmed by the recent Cour de cassation rulings of 2 July 2026 (nos. 24-19.565 to 24-19.569) on the running of the limitation period in trouble anormal cases.

A further practical point: in cases involving pollution of land or watercourses, the Cour de cassation’s ruling of 5 June 2025 (Cass. 3e civ., no. 23-23.775, published in the Bulletin) is essential reading. The case concerned farmers whose cattle had been poisoned by heavy metals from a neighbouring industrial site. The Court reaffirmed the strict liability principle but drew an important line: while the victim is not required to mitigate their loss in the interest of the tortfeasor, their own fault, when it contributes to the aggravation of the damage, reduces their right to compensation. The farmers had continued to graze their livestock on land they knew to be polluted although they had access to unpolluted pastures elsewhere. The Cour de cassation held that this fault, linked to the persistence of abnormal cattle mortality from 2004 onwards, should have led to a partial apportionment of liability. For a foreign property owner, the lesson is clear: once you become aware of a disturbance, take reasonable steps to avoid aggravating your own loss, or risk seeing your compensation reduced.

Conclusion

The trouble anormal du voisinage regime is one of the most protective features of French property law for a victim of neighbourhood disturbance, and one of the most unforgiving for its author. It does not require proof of fault. It is available to any occupant, not just the title holder. It cannot be defeated by showing that the victim bought the property knowing of the nuisance. And it operates alongside a network of specific statutory rules — on trees, views, rainwater, and building distances — that often provide even more potent remedies.

For a foreign buyer, several practical points emerge. Before purchasing, inspect not only the property but its immediate environment: note the height and position of neighbouring trees relative to the boundary, the location of restaurant extraction vents, the state of adjoining walls and whether recent construction is planned or underway. Ask the seller directly, in writing, whether they are aware of any ongoing neighbourhood disputes or disturbances. A seller who conceals a known nuisance exposes themselves to a claim for dol (fraudulent misrepresentation) or for breach of the pre-contractual information duty under Article 1112-1 of the Civil Code, which can result in annulment of the sale or damages. The diagnostics immobiliers (statutory property surveys) provided by the seller do not cover these issues, and the notary’s duty of advice, while real, does not extend to investigating neighbourhood nuisances.

If a problem arises after purchase, act promptly — not only because evidence deteriorates, but because a court may treat prolonged inaction as acceptance of the situation. Commission a constat d’huissier (a bailiff’s official report) to record the disturbance while it is ongoing. A bailiff’s report carries high evidentiary weight in French courts and is far more effective than photographs taken with a phone. Send a formal mise en demeure (letter of formal notice) to the neighbour, delivered by recorded delivery, setting out the facts, the legal basis of your claim, and the remedy sought. This step is often required before court proceedings and, in many cases, prompts settlement. If the disturbance continues, the competent court is the tribunal judiciaire for the area where the property is located. For claims below €10,000, representation by a avocat (French solicitor) is not mandatory, but it is strongly advisable given the technical nature of the evidence and the procedural rules.

For readers seeking broader guidance on French property transactions, our real estate law overview for foreign buyers provides a comprehensive introduction to the legal framework governing purchase, ownership, and dispute resolution. The team at Kohen Avocats offers bilingual assistance in English and French for neighbourhood disputes, pre-purchase due diligence, and litigation before the French civil courts.

Finally, check your property insurance policy. French assurance habitation (home insurance) typically includes protection juridique (legal expenses cover) as an optional extra, which may fund the cost of legal advice and representation in neighbour disputes. The trouble anormal du voisinage regime is one of the most protective in Europe. For a foreign owner, understanding its scope and acting methodically — bailiff’s report, formal notice, legal advice — is the surest route to restoring the quiet enjoyment of your French property.