Valid Planning Permission: The Court of Cassation Protects Owners Against Abusive Demolition Orders

Imagine: you have just bought a house in Marchiennes, in the Douaisis region. You scrupulously comply with your planning permission for an extension. But a neighbour, a member of the same subdivision association, sues you, arguing that your construction breaches the internal regulations of the subdivision. How far can he go? Can he demand the demolition of your extension? This question, crucial for every owner, was decided by the Court of Cassation in a landmark judgment of 24 October 1990.

The answer is clear: as long as the planning permission has not been annulled by the administrative court, a judicial court cannot order demolition, even if the subdivision regulations have been breached. Why such protection? Because the planning permission issued by the administrative authority is presumed valid and lawful. Challenging it before a civil judge, without first going through administrative annulment, would amount to circumventing public law rules.

This article breaks down this decision, its practical implications and the steps to take to avoid finding yourself in a similar situation.

The facts: a story that happens every day

Mr X owns a plot of land in a subdivision in Marchiennes. Like many subdivisions, it is governed by a set of conditions (cahier des charges) setting out rules: height of buildings, materials, distances from boundaries, etc. Mr X applies for planning permission for a single-family house. The town hall processes his application and grants him planning permission in accordance with the applicable planning rules. Mr X builds his house strictly in compliance with this permission.

But then: a neighbour, Mr Y, also a member of the subdivision, considers that Mr X's construction does not comply with the internal regulations of the subdivision (for example, insufficient distance from the boundary). Mr Y sues Mr X before the Tribunal de Grande Instance (now the Tribunal Judiciaire) of Douai. He seeks demolition of the construction and damages for breach of the subdivision contract (the conditions being contractual between the co-lot owners).

The Douai court rules in favour of Mr Y and orders demolition. Mr X appeals. The Douai Court of Appeal upholds the judgment. According to the lower courts, the conditions of the subdivision being a contract, its breach by Mr X justifies demolition, regardless of the validity of the planning permission. Mr X then appeals to the Court of Cassation.

The reasoning of the court — explained

The Court of Cassation quashes the Court of Appeal's decision. It recalls the principle set out in Article L. 480-13 of the Planning Code (now codified in Article L. 480-13 of the same Code). This provision states that when a building has been erected in accordance with a planning permission, the owner cannot be ordered by a judicial court to demolish it on grounds of non-compliance with planning rules or public utility easements unless the permission has been previously annulled for abuse of power or its illegality has been established by the administrative court.

In other words, the planning permission acts as a shield: as long as it has not been withdrawn by the administration or annulled by the administrative court, it is deemed valid and protects the builder. The Court of Appeal violated this provision by ordering demolition without Mr X's permission having been previously annulled. It does not matter that the subdivision regulations are contractual: Article L. 480-13 applies to all planning rules, including those derived from a subdivision contract.

The Court of Cassation does not rule on the merits of the dispute (whether the construction breaches the regulations or not). It remands the case to another Court of Appeal (that of ...). But its message is clear: the judicial court cannot bypass the legality review of the planning permission. This is a landmark decision confirming the supremacy of the planning permission over contractual rules between co-lot owners.

What this means for you — practically

If you are a landlord owner: you have built a rental property in Aniche, with a valid planning permission. A neighbour sues you because your building exceeds by 50 cm the height allowed by the subdivision regulations. Good news: as long as your permission is not annulled by the administrative court, the judicial court cannot order demolition. It may possibly order you to pay damages if harm is proven, but not to demolish.

If you are a tenant: you rent a house in a subdivision. The owner built a conservatory with permission. A neighbour brings a demolition action. You can be reassured: as long as the permission is not annulled, you are not at risk of losing your home overnight. But beware: if the owner breached the regulations, he may have to compensate the neighbour, which could eventually affect the lease (if the owner is forced to sell).

If you are a buyer: you are buying a house in Marchiennes. Before signing, check that the seller has obtained planning permission for all existing constructions. If so, you are protected by Article L. 480-13 even if neighbours complain about non-compliance with subdivision regulations. If the seller has no permission, then you are exposed to a demolition action.

Example with figures: in Aniche, a 20 m² extension built without permission costs on average €15,000 to demolish, plus €5,000 in legal fees and €3,000 in damages. With a permission, even if the subdivision regulations are breached, demolition can only occur after the permission is annulled, which can take 2 to 3 years of administrative proceedings. Enough time to negotiate a settlement.

Four tips to avoid this type of dispute

• Before building, check the subdivision regulations: Do not rely solely on the planning permission. Consult the conditions of the subdivision (available from the notary or the town hall). Some rules (height, materials, colour) may be more restrictive than the Local Plan. If your project does not comply, you risk a conflict with your co-lot neighbours.
• In the event of a dispute, do not respond to a demolition summons without consulting a lawyer: If a neighbour sues you, do not panic. Your first defence is to raise the argument based on Article L. 480-13: since the permission has not been annulled, demolition cannot be ordered. This argument must be raised at first instance.
• If you are the aggrieved neighbour, do not rush to the judicial court: Before bringing a demolition action, you must first challenge the planning permission before the administrative court (within 2 months of the posting of the permission). Without this prior annulment, your demolition action is doomed to fail.
• Mediation or settlement: Before incurring legal costs (expect €3,000 to €8,000 for a full trial, excluding appeal), try mediation. An amicable agreement (modification of the construction, compensation) may be cheaper and faster. A lawyer can help you negotiate.

Further reading: related case law and developments

The 1990 decision is part of a consistent line of Court of Cassation rulings. As early as 1985 (Civ. 3e, 12 March 1985, No. 83-16.672), the Court held that the judicial court cannot order demolition of a building erected in accordance with a planning permission unless that permission has been previously annulled. More recently, in a judgment of 5 July 2018 (Civ. 3e, No. 17-18.502), the Court extended this rule to cases where the permission was granted in disregard of substantive rules: as long as annulment has not been pronounced, the permission prevents demolition.

This case law is consistent with the principle of legal certainty: once a permission has been granted, the builder must be able to rely on its validity. The trend of the courts is therefore protective of owners. However, beware: this protection does not apply if the building was erected without permission or in breach of the permission (e.g., a larger area than authorised). In that case, the judicial court can order demolition without waiting for an administrative decision.

For the future, the question may arise whether this rule also applies to prior declarations of works (DP). By analogy, the Court of Cassation seems to extend the same protection (Civ. 3e, 20 March 2019, No. 18-10.759).

Key points to remember

FAQ:

• Can my neighbour demand demolition of my building if I have planning permission? No, as long as the permission has not been annulled by the administrative court. He can only seek damages.
• What should I do if a neighbour sues me for demolition? Immediately contact a lawyer specialised in property law. He will raise the inadmissibility of the claim based on the lack of prior annulment of the permission.
• How long does it take to annul a planning permission? The procedure before the administrative court lasts on average 12 to 18 months. In urgent cases, an interim suspension can be requested.
• Can subdivision regulations be stricter than the Local Plan? Yes, and they are contractually binding between co-lot owners. But their breach does not allow demolition if you have a valid planning permission.
• Can I be ordered to pay damages even if my permission is valid? Yes, if you cause harm to a neighbour (e.g., loss of view, overshadowing). But demolition is excluded as long as the permission is not annulled.

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