Falsified Planning Permission: When the Judge May Refuse Demolition Without Giving Reasons

Imagine: you have just bought a house in Wittenheim, not far from Mulhouse. Everything seems to be in order; planning permission was granted by the town hall. But a few months later, you receive a letter from the neighbour: he claims that your planning permission was falsified and demands the demolition of your extension. What should you do? This situation, far more common than one might think, raises a crucial question: is the judge obliged to order demolition as soon as an irregularity is noted? The answer given by the French Supreme Court (Cour de cassation) in its judgment of 15 March 1995 (No. 94-80.707) is nuanced: trial judges have discretionary power, but they must avoid errors in reasoning.

The Facts: A Story That Happens Every Day

Mr Paul, an owner in Wittenheim, had obtained planning permission for an area of 33,000 m². However, this permission, granted in 1982, contained a handwritten note concerning the colour of the external rendering. The problem: this note had been added after the permission was granted, without the consent of the administration. A neighbour, Mr Durand, discovered the falsification and lodged a complaint. Paul was criminally sentenced to 8 months' imprisonment for falsifying an administrative document and using a forged document. But that is not all: the neighbour also demanded the demolition of the building under Article L. 480-5 of the French Town Planning Code (which allows the judge to order the reinstatement of the premises).

Before the Court of Appeal, Paul argued that the falsification did not affect the substance of the permission – the built area remained compliant – but only a cosmetic mention. The Court of Appeal agreed and refused demolition, considering the irregularity to be minor. The neighbour appealed to the Supreme Court, arguing that the judges should have given reasons for their decision not to order demolition.

The Reasoning of the Court — Analysed

The Supreme Court dismissed the appeal. It recalled a fundamental principle: trial judges (i.e., judges of first instance and appeal) have discretionary power (a freedom of assessment) to decide whether or not to order the measures provided for by Article L. 480-5 of the Town Planning Code. This article allows the court to order demolition, bringing into conformity, or cessation of works in the event of a planning infringement. But it does not oblige it to do so. In other words, even if a building is illegal, the judge may choose not to have it demolished if the circumstances justify it.

The Court specified that judges are not, in principle, required to give reasons for their decision to refuse demolition. This means they can simply say 'no' without explaining why. However, the decision is liable to be quashed if it is based on erroneous reasons (a mistake of fact or law), contradictory reasons (reasons that cancel each other out) or fails to address the parties' submissions (for example, if the neighbour had raised a specific argument and the judge ignored it). In the present case, the Court of Appeal had noted that the falsification did not change the authorised area and that the colour of the rendering was a minor aesthetic matter. These reasons were neither erroneous nor contradictory, so the decision was upheld.

This solution is consistent with a constant line of case law: the planning judge has a broad discretion to proportion the sanction to the seriousness of the infringement. It is neither a reversal nor an evolution, but the confirmation of an already well-established principle.

What This Means for You — Practically

If you are an owner in Guebwiller and your neighbour contests your planning permission, be aware that the mere existence of an irregularity does not automatically lead to demolition. The judge will weigh several factors: the nature of the infringement (minor or serious), the impact on the neighbourhood, the good faith of the builder, the age of the works, etc. For example, a 20 m² extension built without permission but in a building zone, without harming anyone, has a good chance of being regularised rather than demolished.

For a tenant, this decision is less directly applicable, but it protects you: if your landlord has carried out illegal works, you will not be evicted overnight because the judge may allow some leeway. On the other hand, if you are a buyer, be vigilant: an irregular building may be held against you in a future sale. Always check the conformity of the permission with the existing building – a simple glance at the mention of the rendering can reveal a falsification.

If you are a co-owner, this case law concerns you if common parts have been modified without authorisation. The managing agent may demand reinstatement, but the judge may refuse if the modification is minor and accepted by all.

Four Tips to Avoid This Type of Dispute

• Check your planning permission as soon as you receive it: compare it with the application submitted. Any handwritten note or modification must be justified by an amendment. If in doubt, ask the town hall for a certified true copy.
• Never make modifications without authorisation: changing the colour of the rendering, adding a window, or altering the layout – even minor – may constitute an infringement. A simple letter to the town hall for information may suffice, but a modified planning permission is better.
• Keep all documents: carefully keep the plans, photos of the site, correspondence with the administration. In the event of a dispute, these pieces of evidence can demonstrate your good faith and influence the judge in your favour.
• In case of a dispute, try conciliation before trial: an exchange with the neighbour or mediation can avoid legal fees and years of proceedings. Often, an amicable agreement (such as regularisation or compensatory works) is quicker and cheaper.

Further Reading: Related Case Law and Developments

Several earlier decisions confirm this line: for example, the Supreme Court held in 1992 (No. 90-85.214) that the judge could refuse demolition of a building erected in a flood zone if the builder had obtained regularisation permission. Conversely, in a 2000 judgment (No. 98-87.321), it quashed a Court of Appeal that had refused demolition without examining the risk to public safety. The trend is therefore towards increased scrutiny of reasoning: the judge must at least explain why he considers the infringement minor or why demolition would be disproportionate. This requirement for reasoning has been reinforced since the 2000s, under the influence of the European Convention on Human Rights (right to a fair trial).

In Practice: What to Do

FAQ:

• Can I contest my neighbour's planning permission if I think it is falsified? Yes, you can bring an action before the judicial court to have the infringement established and demand demolition. But you will have to prove the falsification (for example, by a handwriting expert).
• What is the time limit for taking action? The action for demolition is barred after 10 years from the completion of the works. After this period, you can no longer claim anything.
• What are the costs involved? Proceedings may cost between €2,000 and €10,000 in legal fees, depending on complexity. Any judicial expert report adds €1,500 to €5,000. But a preliminary 30-minute consultation (€45) may save you from a pointless action.
• What if I am the owner and my permission is contested? Gather all documents (permission, plans, photos), contact a lawyer specialised in property law. You may propose regularisation to the town hall if the infringement is minor.

Conclusion

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