Illegal Planning Permission: Can the Commune Be Compensated for Its Own Loss?

Imagine: you own a beach chalet in Sélestat — yes, here we dream a little, but the law is the same. You built it in good faith, with planning permission granted by the town hall. Years later, a court annuls this permission due to a procedural defect. The commune, which made the error, orders you to demolish. You demolish, you lose your investment. But can the commune claim damages from its insurer for the cost of demolition? No, answers the Court of Cassation in a judgment of 4 November 2008. Why? Because one cannot rely on one's own turpitude.

This decision raises a fundamental question for any owner or developer: what happens when the administration allows you to build, then reverses its decision? Who pays for the broken pots? The answer is nuanced, but one principle dominates: he who causes damage by his fault must repair it, but cannot profit from it.

In this case, the commune of Hyères-les-Palmiers had granted planning permission for a beach chalet, which permission turned out to be illegal. After a long legal battle — the Conseil d'État annulled the permission in 1996 — the commune had to have the chalet demolished. It then sought compensation from its insurer for the material loss suffered. But the Court of Cassation rejected its claim: the commune, by granting an illegal permission, had committed a fault which prevented it from claiming compensation for the consequences of that same fault.

The Facts: A Story That Happens Every Day

Let's go back. In the 1980s, the commune of Hyères-les-Palmiers, in the Var, granted planning permission for a beach chalet. Nothing exceptional: every year, hundreds of permissions are granted for light constructions by the sea. Except that this permission was challenged by an environmental protection association. Why? Because the land was located in a non-building zone, protected by the Coastal Law. The permission was therefore illegal.

The commune, after granting the permission, withdrew it, then granted a second one on 31 August 1991. But the damage was done. The association brought the matter before the administrative judge, and the Conseil d'État, in a judgment of 9 October 1996, annulled the planning permission. Consequence: the chalet had to be demolished. The commune, which had insured the building, asked its insurer to indemnify it for the cost of demolition. The insurer refused, arguing that the commune had committed a fault by granting an illegal permission. The commune sued the insurer.

The court of first instance ruled in favour of the commune. But the court of appeal reversed: it held that the commune could not be compensated because it was the cause of its own loss. The commune appealed to the Court of Cassation. The Court of Cassation, seised of the matter, confirmed the position of the court of appeal: the commune, by granting an illegal permission, had committed a fault. Now, no one can rely on their own fault to obtain compensation. The chalet was illegal from the start, so the commune cannot claim damages for its destruction.

The Reasoning of the Court — Dissected

The Court of Cassation relies on a fundamental principle of civil law: Article 1240 of the Civil Code (formerly 1382), which provides that "any act of man which causes damage to another obliges the person by whose fault it occurred to repair it". But this same article implies in negative a principle: he who causes damage cannot claim reparation for the consequences of his own fault. This is the principle of "turpitude": one cannot profit from one's own illicit act.

In this case, the commune of Hyères-les-Palmiers committed a fault by granting planning permission in violation of the Coastal Law. This fault is the direct cause of the loss: without this illegal permission, the chalet would never have been built, and it would never have had to be demolished. The commune cannot therefore ask to be compensated for the consequences of its own illegality.

The judges specify that the annulment of the permission by the Conseil d'État changes nothing: it does not "validate" the construction, it declares it illegal. The fact that the chalet existed for several years does not create a right to compensation for the commune. On the contrary, it is the commune that failed in its duty of urban planning control.

This decision is a confirmation of constant case law: local authorities cannot turn against their insurer for damages resulting from their own illegal decisions. It is a salutary reminder of the need for rigour in the processing of planning permission applications.

What This Changes for You — Concretely

This decision has direct implications for several actors. First, for owners who built on the basis of an illegal permission: you may be forced to demolish, and you will not be able to turn against the commune to obtain compensation, unless you demonstrate a distinct loss (for example, architect's fees or materials you paid for before the annulment). But beware: if you bought the property after construction, you might have an action against the seller for latent defects.

For property developers in Obernai or elsewhere: always check the conformity of the permission with the local urban plan (PLU) and planning laws. If you build on the basis of a permission that could be illegal, you run the risk of having to demolish at your own expense. A developer who has invested €500,000 in a programme of 10 beach chalets, for example, could lose everything if the permission is annulled.

For communes: this decision is a warning. If your urban planning department grants a permission in violation of the rules, you will be solely responsible for the consequences. Your insurer will not cover you. Caution is therefore advised: have each permission checked by a specialist lawyer.

Finally, for environmental protection associations: they have here a powerful lever to enforce the Coastal Law. If a construction threatens a protected area, they can request the annulment of the permission and demolition, without the commune being able to be compensated.

Four Tips to Avoid This Type of Dispute

• Before building, have your permission checked by a lawyer specialised in urban planning law. A simple conformity check with the PLU can save you from costly demolition. In Obernai, the PLU prohibits constructions within 100 metres of the watercourse: do not rely on a permission that ignores this rule.
• If you buy a recently built property, demand a warranty of eviction from the seller. Include in the sale deed a clause providing that the seller will compensate you if the permission is annulled. In Sélestat, a purchaser could thus be protected.
• For communes: implement a double-check procedure for permissions. An instructing officer and a legal officer must validate each decision. Train your teams on the Coastal Law, Mountain Law, and other constraints.
• In case of a dispute, do not count on compensation from your insurer if you are the cause of the problem. Prevention is better than cure: negotiate with the association or neighbour to regularise the situation, if possible.

Further Reading: Related Case Law and Developments

This decision is part of a line of case law that refuses local authorities the right to rely on their own fault. One can cite a judgment of the Conseil d'État of 28 July 2000, Commune de Saint-Jean-de-Luz, which already held that a commune could not obtain compensation for the loss resulting from the annulment of a planning permission it had illegally granted. The Court of Cassation confirms this position here, in private law, with regard to insurers.

However, there is a nuance: if the commune had committed a fault independent of the granting of the permission (for example, negligence in monitoring the construction site), it could be compensated for that loss. But in our case, the sole and determining fault was the granting of the illegal permission.

In the future, one can expect courts to be increasingly strict towards local authorities that do not comply with planning rules. The trend is towards accountability: communes must be exemplary, otherwise they bear the financial consequences alone.

Frequently Asked Questions

Can I demolish a building built on an illegal permission without waiting for a court decision?
No. You must follow procedures. If the permission is annulled, the town hall may order you to demolish. If you demolish yourself beforehand, you could lose any claim for compensation.

What should I do if my neighbour builds on an illegal permission?
You can challenge the permission before the administrative court within two months of its display. Do not wait: after this period, the permission becomes final.

Must the commune's insurer compensate the owners of the chalet?
No, in this case, the insurer does not have to compensate the commune. But the owners may have an action against the commune for fault, if it granted an illegal permission. But beware: the owner who built knowing of the illegality may also be at fault.

What are the time limits for acting after the annulment of a permission?
You generally have 4 months from the notification of the annulment decision to claim compensation from the commune. But each case is specific: consult a lawyer quickly.

Can I sell a property built on an annulled permission?
Yes, but you must inform the buyer of the illegality. If you do not, he may seek annulment of the sale for fraud or latent defect. It is better to regularise the situation before the sale.

Are you in a similar situation? A first 30-minute consultation with Maître Zakine (€45) can save you months of procedure — and often much more. Book an appointment →