Abnormal neighbourhood disturbances: the project owner may claim against the builders without proving fault

Imagine: you are the owner of a house in Septèmes-les-Vallons, and you decide to have an extension built. The works begin, but very quickly, your neighbours complain of nuisances: noise, dust, vibrations… Cracks appear on their walls. They sue you for abnormal neighbourhood disturbances. You are ordered to compensate them. But you did not carry out the works yourself: you entrusted the site to a company. Can you claim against it to recover the sums paid? And on what basis?

The French Supreme Court ruled on this question in a judgment of 24 September 2003 (No. 02-12.873). It answers in the affirmative, and above all, it specifies that to act against the builders, the project owner does not need to prove any fault on their part. He may simply invoke the theory of abnormal neighbourhood disturbances, which is a no-fault liability. In other words, as soon as the works caused abnormal damage to the neighbourhood, the builder is obliged to reimburse the project owner who has already compensated the victims.

But be careful: this solution is not self-evident. In law, the project owner is strictly liable to the neighbours for disturbances caused by the works. But his recourse against the builder is more delicate, as he must find a solid legal basis. The judgment of 24 September 2003 removes this difficulty by admitting a subrogation claim based on abnormal neighbourhood disturbance, without requiring fault. A decision that considerably simplifies the lives of owners, landlords or developers.

The facts: a story like any other

A property developer, whom we will call Mr X, decides to launch a housing construction programme in Septèmes-les-Vallons. He entrusts the works to a main contractor, who subcontracts part of the site to a subcontractor. Very quickly, the residents of neighbouring buildings suffer nuisances: vibrations, dust, noise, and above all, material damage (cracks, subsidence). Several neighbours sue Mr X before the Tribunal de Grande Instance of Marseille to obtain compensation on the basis of abnormal neighbourhood disturbances. The court grants their claims, and Mr X is ordered to pay damages.

Mr X pays the neighbours, but he considers that the real responsible party is the company he entrusted with the works. He therefore decides to in turn sue the main contractor and its subcontractor, as well as their insurers, to obtain reimbursement of the sums paid. He invokes a subrogation claim: he is subrogated to the rights of the victim neighbours, up to the amount of payments made. To do so, he must demonstrate that the builders are responsible for the disturbances suffered by the neighbours. But on what basis? He cannot invoke his own contractual liability, as he has no contract with the neighbours. He therefore invokes the theory of abnormal neighbourhood disturbances, which is a strict liability (no-fault).

The builders resist. They argue that abnormal neighbourhood disturbance cannot be invoked in the context of a subrogation claim, because it is a no-fault liability that cannot be transferred. The case goes up to the Court of Appeal of Aix-en-Provence, then to the Supreme Court.

The Court of Appeal of Aix-en-Provence rules in favour of Mr X: it holds that the project owner, subrogated to the rights of the victim neighbours up to the amount of payments made, is entitled to claim against the builders and their insurers on the basis of the principle prohibiting abnormal neighbourhood disturbances. The builders appeal to the Supreme Court.

The reasoning of the court — dissected

The Supreme Court, in a very clear judgment, dismisses the appeal and confirms the decision of the Court of Appeal. It holds that "a Court of Appeal which finds that a project owner, having had works carried out that caused damage to residents of neighbouring buildings, has compensated them, rightly holds that this project owner, subrogated to the rights of the victim neighbours up to the amount of payments made, is entitled to claim against the builders and their insurers on the basis of the principle prohibiting abnormal neighbourhood disturbances, which does not require proof of fault."

In clear terms, the Court validates the following mechanism: when the project owner pays the neighbours due to abnormal disturbances caused by the works, he is subrogated to the rights of those neighbours. He may therefore exercise against the builders the action that the neighbours could have exercised themselves. Now, the neighbours could have sued the builders on the basis of abnormal neighbourhood disturbances, which is a no-fault liability. Therefore, the project owner may also do so, without having to prove any fault on the part of the builder.

But be careful: this recourse is not a contractual recourse (based on the construction contract), but a subrogation recourse (based on payment made to the victims). This means that the project owner must have previously compensated the neighbours in order to claim against the builders. He cannot act directly in his own name, but only as subrogee of the victims' rights.

What few people know is that this solution is an important jurisprudential development. Before this judgment, some courts required the project owner to prove a fault of the builder to obtain reimbursement, which was often difficult. Now, the mere existence of an abnormal neighbourhood disturbance (i.e., damage exceeding the ordinary inconveniences of neighbourhood) suffices to engage the builder's liability towards the subrogated project owner.

What this changes for you — concretely

This decision has very concrete practical implications for several profiles:

• For the landlord owner: if you have works carried out in a building you rent, and these works cause disturbances to your neighbours, you will be ordered to compensate them. But you can then claim against the company that carried out the works, without having to prove it committed a fault. For example, in Plan-de-Cuques, an owner had to pay €8,000 to a neighbour for cracks. Thanks to this judgment, he was able to obtain full reimbursement from the contractor.
• For the property developer: you are often the first target of residents. This decision offers you a lifeline: after compensating the neighbours, you can sue the builders and their insurers on the basis of abnormal disturbance, without having to demonstrate their fault. This simplifies and speeds up recourse.
• For the tenant: even if you are not directly concerned, know that if your landlord carries out works that cause you disturbances (noise, dust), you can sue him. He can then claim against the company. However, note that abnormal neighbourhood disturbance only applies if the harm exceeds the normal inconveniences of community life.
• For the co-owner: if the co-ownership undertakes works on the common parts, and neighbours suffer disturbances, the co-owners' association may be ordered to pay. But the association can then claim against the works company on the same basis.

undefined, I have come across cases where owners in Septèmes-les-Vallons had to pay significant sums (€10,000 or more) to neighbours for site nuisances. Thanks to the 2003 case law, they were able to recover these sums from the builders, without having to prove fault. A considerable saving of time and money.

Four tips to avoid this type of dispute

• Before the works, inform your neighbours in writing: send a registered letter or a simple letter describing the nature of the works, their duration, and foreseeable nuisances. This can demonstrate your good faith and limit abnormal disturbances.
• Choose competent companies and ensure their guarantees: check that the main contractor and its subcontractors have professional civil liability insurance and decennial insurance (ten-year guarantee for serious damage). Request an insurance certificate before the start of works.
• Carry out a joint inventory of condition before and after the works: with your neighbours, photograph the walls, floors, facades. This will help establish the existence of damage and avoid disputes.
• In case of disturbance, gather evidence from the outset: photos, videos, bailiff's reports, witness statements. The more evidence you have, the easier it will be to demonstrate the abnormal nature of the disturbance.

Further reading: related case law and developments

This 2003 judgment is part of a consistent line of case law. Already, in a judgment of 16 July 1998 (No. 96-22.121), the Supreme Court had admitted that the project owner could exercise a subrogation claim against the builder on the basis of strict liability for neighbourhood disturbances. The 2003 judgment confirms and clarifies this solution.

More recently, the Supreme Court extended this principle to other situations, for example in matters of damage caused by public works (judgment of 12 July 2012, No. 11-18.137). The trend is therefore towards simplifying recourse for the compensating project owner.

However, note that this case law only applies if the works actually caused an abnormal neighbourhood disturbance. If the disturbance is normal (ordinary construction noise, inevitable dust), the neighbour cannot obtain compensation, and therefore the project owner cannot claim against the builder. The damage must be "abnormal", i.e., exceeding the ordinary inconveniences of neighbourhood.

Frequently asked questions

• What is an abnormal neighbourhood disturbance? It is a nuisance that exceeds the normal inconveniences of community life. For example, construction noise at 7 am on a Sunday, or vibrations that cause cracks. The abnormal nature is assessed on a case-by-case basis.
• Can I sue the builder directly without having compensated the neighbours? No, because you are not subrogated to the neighbours' rights until you have paid them. You must first compensate the victims, then exercise the subrogation claim.
• What are the time limits for suing the builder? The subrogation claim is subject to the ordinary limitation period (5 years since the 2008 reform). But note: the starting point is the date of payment to the neighbours. You must act quickly.
• What if the builder has no insurance? You can still sue him on the basis of abnormal disturbance, but if he is insolvent, you risk not being reimbursed. Hence the importance of checking insurance before works.
• Does this case law apply to works carried out by an individual? Yes, if you are the project owner (you ordered the works), even for a small extension, you can benefit from this recourse. But note: if you carry out the works yourself, you are both project owner and builder, and you cannot sue yourself.

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