Mobile phone masts and abnormal neighbourhood disturbance: judicial jurisdiction confirmed

Imagine: you live in Sedan, in a peaceful flat, and one day technicians install a mobile phone mast on the building opposite. Since then, you have suffered from headaches, insomnia, and you are convinced that the waves are the cause of your problems. What can you do? Go to court, of course. But before which judge? And to ask for what? This decision of the Court of Cassation of 17 October 2012 (No. 10-26.854) answers these crucial questions for thousands of residents.

The problem is simple: mobile phone masts are essential for mobile telephony, but their presence raises legitimate health concerns. Operators, such as SFR or Orange, install them with administrative authorisations. Yet neighbours consider that they suffer an abnormal neighbourhood disturbance — a legal concept that allows compensation without proving fault. But how far can this action go? Can the dismantling of the mast be demanded, or only damages?

The highest court draws a clear line: if you want the nuisance to cease, you must go before the administrative judge, because this falls within the special police powers for radio installations. On the other hand, to obtain compensation for your loss — loss of enjoyment, physical or moral damage, even the cost of shielding your home — the civil judge has jurisdiction. A subtle but fundamental distinction that we will analyse.

The facts: a story that happens every day

Mrs X, owner of a flat in Paris, one day sees mobile phone masts installed on a neighbouring building by SFR and Orange France. Very quickly, she attributes to these installations disorders she describes as electro-hypersensitivity: headaches, fatigue, sleep disorders. She sues the operators before the Tribunal de grande instance de Paris (now the Tribunal judiciaire) on the basis of abnormal neighbourhood disturbance, a principle derived from Article 544 of the Civil Code (the right to enjoy one's property without excessive nuisance).

Mrs X does not merely claim damages: she also demands the shielding of her flat to protect herself from the waves. The operators, for their part, argue that the masts are authorised by the Agence nationale des fréquences (ANFR) and comply with standards. But the court, and then the court of appeal, declare themselves competent to rule on the compensation and shielding. The operators appeal to the Court of Cassation, arguing that only the administrative judge can hear a dispute concerning a lawfully authorised installation.

The twist arrives: the Court of Cassation confirms the jurisdiction of the civil judge for the claim for compensation and shielding, because it does not involve challenging the administrative authorisation, but only repairing the harmful consequences of the mast's operation. A victory for Mrs X, but an important clarification: if she had sought dismantling, she would have had to apply to the administrative court.

The reasoning of the court — analysed

The Court of Cassation relies on the principle of separation of administrative and judicial authorities, inherited from the law of 16-24 August 1790. In essence, the civil judge cannot interfere in the exercise of the special police powers vested in public authorities for radio stations. However, ordering the interruption or dismantling of a lawfully authorised mast would amount to contradicting the administration, and only the administrative judge can do that.

On the other hand, when the claim is only to compensate for a loss — loss of enjoyment, physical or moral damage, cost of shielding — the civil judge remains competent. Why? Because these claims do not challenge the existence of the mast, only its effects. The Court specifies that the action for abnormal neighbourhood disturbance is based on Article 544 of the Civil Code, which enshrines the right of property, and not on a challenge to the legality of the administrative authorisation.

The operators argued that the mast complied with the standards of the ARCEP (Autorité de régulation des communications électroniques et des postes). But the Court dismisses this argument: compliance with standards does not exclude an abnormal neighbourhood disturbance. Indeed, abnormal disturbance is assessed in concreto (on a case-by-case basis): even if the installation is compliant, it may cause excessive nuisance to the neighbourhood. This is a classic distinction in civil liability law, which the Court applies here to mobile phone masts.

This decision is a confirmation of earlier case law, notably a judgment of 23 March 2011 (No. 10-13.758) which had already paved the way. It is not a reversal, but it clarifies the division of jurisdiction between the two orders of courts, which is often a source of confusion for litigants.

What this changes for you — concretely

For owners and tenants living near a mobile phone mast, this decision is good news: you can obtain compensation before the civil judge, without having to prove that the operator committed a fault. It is enough to show that the nuisances (noise, waves, aesthetic harm…) exceed the normal inconveniences of neighbourhood. For example, in Charleville-Mézières, a resident whose flat is less than 10 metres from a mast and who suffers from chronic migraines could obtain between €3,000 and €10,000 in damages, depending on the extent of the disturbance.

If you are a landlord, note that the disturbance can also affect the rental value of your property. You could seek a reduction in rent or, if the disturbance is serious, termination of the lease with compensation. But be careful: the civil judge cannot order the relocation of the mast. For that, you must apply to the administrative court within two months of the authorisation (time limit for judicial review). After that time, an action for dismantling becomes very difficult.

For co-owners, if the mast is installed on the roof of your building, note that the operator must have obtained the agreement of the co-ownership. If not, you can take legal action to have the mast removed, and here again, the civil judge is competent because it is a contractual or property law dispute, not a challenge to the administrative authorisation.

Four tips to avoid this type of dispute

• Before any action, gather medical and technical evidence. Consult a doctor to establish a link between your symptoms and the presence of the mast. Have wave levels measured by an approved study office. These elements will be essential to demonstrate abnormal disturbance.
• Check the administrative authorisation. Inquire with the town hall or the ANFR to see if the mast is lawfully authorised. If not, you can act directly before the civil judge to seek dismantling (because the installation is unlawful).
• First try an amicable negotiation. Before initiating proceedings, contact the operator by registered letter with acknowledgement of receipt to set out your loss and request compensation or technical measures (shielding). About 30% of cases are settled amicably.
• Respect the time limits for appeal. If you wish to challenge the authorisation itself, you have two months from its publication or display at the town hall. After that time, you can no longer seek dismantling, only damages.

Further reading: related case law and developments

This decision is part of a line of judgments that strengthen the protection of residents against mobile phone masts. Already in 2009, the Court of Cassation had ruled (Civ. 3e, 3 June 2009, No. 08-13.205) that abnormal neighbourhood disturbance could be invoked even in the absence of fault, confirming that compliance with standards is not an absolute shield. More recently, the Court of Appeal of Versailles (14 March 2019, No. 17/02951) awarded €5,000 in damages to a resident for loss of enjoyment due to the presence of masts less than 50 metres away.

The trend is therefore towards increased protection, but with limits: the civil judge cannot order dismantling. This division of jurisdiction is sometimes criticised because it forces victims to multiply proceedings. Nevertheless, recent case law tends to relax this rule: if the authorisation is tainted by illegality, the civil judge may stay proceedings and refer a preliminary question to the administrative judge. In practice, this complicates matters, but specialised lawyers know how to navigate these subtleties.

Frequently asked questions

• Can I demand the dismantling of a mobile phone mast before the Tribunal judiciaire? No, unless the mast is installed without authorisation or on your property without your consent. In other cases, only the administrative court can order dismantling, and within two months of the authorisation.
• What losses can I claim? You can claim damages for loss of enjoyment (e.g., €100 per month for the duration of the nuisance), moral damage (between €500 and €5,000 depending on intensity), physical harm (medical expenses, loss of earnings), and the cost of shielding your home (up to €10,000).
• How long does court proceedings take? At first instance, allow 12 to 18 months. On appeal, an additional 18 to 24 months. In total, full proceedings can take 3 to 4 years. An amicable negotiation is faster (a few months).
• What is the cost of legal action for abnormal neighbourhood disturbance? Lawyer's fees vary from €1,500 to €5,000 depending on complexity. If you win, the operator may be ordered to reimburse part of these costs (Article 700 of the Code of Civil Procedure).
• What if the mast is on the building opposite, but I am a tenant? You can act in your own name, as the disturbance affects your peaceful enjoyment. Inform your landlord, but you do not need their permission to bring an action.

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 →