Annulment of Municipal Order: The Judicial Judge May Re-examine the Legality of Works

Imagine the scene: you are an owner in Lons, you have obtained a building permit for an extension to your house. The works are progressing when suddenly the town hall serves you with a stop-work order, considering that the works are contrary to the permit. You challenge this order before the administrative court, but it rejects your application. You then find yourself prosecuted before the criminal court for a breach of the Town Planning Code. Can the legality of this municipal order still be challenged? The question is crucial: if the order is illegal, you should not have stopped the works, and the criminal prosecution falls away.

The Court of Cassation, in a judgment of 4 March 1986, ruled: yes, the judicial judge must examine the plea of illegality of the order, even if the application for annulment has already been rejected by the administrative court. In short, just because the administrative judge said no once does not mean the criminal judge is exempt from checking for himself whether the order is valid. A way out for builders, but also an additional complexity for town halls.

This decision, handed down nearly forty years ago, remains relevant. undefined, I have come across cases where owners in Orthez found themselves in this situation: a contested municipal order, an administrative rejection, then a direct summons in criminal proceedings. Understanding this mechanism can make the difference between a conviction and a dismissal. Let us dissect this judgment.

The Facts: A Story Like Many Others

Mr X, an owner in Lons, carries out construction works on his land, holding a building permit issued by the town hall. However, the mayor considers that the works do not comply with the permit conditions and issues an order stopping them. Mr X challenges this order before the administrative court, but his application is rejected. Relying on this rejection, the town hall then brings criminal proceedings against Mr X for a breach of the Town Planning Code (Articles L. 480-2 et seq.). Before the criminal court, Mr X raises a plea of illegality of the municipal order: according to him, the order is illegal because the works complied with the permit. The Bordeaux criminal court, and then the Court of Appeal, refuse to examine this plea, considering that the rejection of the administrative appeal binds them. Mr X appeals to the Court of Cassation.

The reasoning of the lower courts was simple: since the administrative court had already validated the order, the criminal judge could not revisit it. But the Court of Cassation quashes this judgment. For the Court, the rejection of the application for annulment by the administrative judge does not have the authority of res judicata vis-à-vis the judicial judge. In other words, the criminal judge must himself examine whether the order is legal, without being bound by the administrative decision. This is what is called the plea of illegality: a defence which allows the validity of an administrative act to be challenged before a civil or criminal judge, even if that act has not been annulled.

The Reasoning of the Court — Dissected

The Court of Cassation relies on Articles L. 421-1, L. 480-2, L. 480-3 and L. 480-4 of the Town Planning Code. These provisions define criminal offences in town planning matters and the powers of the mayor. But the decision is primarily based on a general principle of law: the independence of the orders of jurisdiction. The administrative judge and the judicial judge are separate. Their decisions do not bind each other, except in cases of preliminary reference (a mechanism by which one judge refers a matter to the other). Here, there was no preliminary reference. The administrative court simply rejected the application, which does not constitute a decision on the merits of the legality of the order. Consequently, the criminal judge retains his power of assessment.

The Court states that the judicial judge must examine the merits of the plea of illegality, i.e., check whether the order is lawful. If the order is illegal, the criminal offence disappears, because one cannot punish someone for violating an illegal act. This is a confirmation of previous case law, notably a judgment of 19 January 1971 (Bull. crim. no. 22). It is therefore not a reversal, but an important reminder.

Wait, what does this actually change? Before this judgment, some judges might have thought that the administrative rejection exempted them from examining the question. Now it is clear: they must do so. However, be careful: this does not mean that the plea of illegality will automatically be accepted. The criminal judge may, after examination, consider that the order is legal and confirm the conviction. But he cannot simply say 'the administrative court has already rejected, so it is valid'.

undefined, I have encountered cases where owners in Orthez were faced with this reasoning from the prosecution. This judgment allowed them to reopen the debate on the legality of the order, sometimes successfully.

What This Means for You — Practically

For the owner-landlord: if you are building and the town hall stops your works, do not give up after a rejection by the administrative court. You can still challenge the legality of the order before the criminal judge if you are prosecuted. Example: in Orthez, an owner carried out an extension in accordance with the permit, but a neighbour complained. The mayor issued a stop-work order, the administrative court rejected the appeal. Prosecuted in criminal proceedings, our client raised the plea of illegality, demonstrating that the order was disproportionate. The criminal court acquitted him. Cost of proceedings: approximately €2,000 in legal fees, but a conviction would have cost €10,000 in fines and damages.

For the tenant: you are less directly concerned, but if you own a rented property, renovation works may be subject to such orders. Be vigilant.

For the buyer: before purchasing a property under construction, check that no stop-work order is in place. If so, the seller must inform you. In case of litigation, you may be able to claim against him for latent defects.

For the co-owner: works on common parts may also be targeted. If the co-ownership is prosecuted, the managing agent must raise the plea of illegality where appropriate.

If you are in this situation, you should: 1) not stop the works immediately (unless there is danger), 2) consult a lawyer to assess the legality of the order, 3) challenge the order before the administrative court within two months, and 4) if you are prosecuted in criminal proceedings, raise the plea of illegality.

Four Tips to Avoid This Type of Dispute

• Check your building permit before starting works: ensure that the project carried out strictly complies with the plans and conditions. Even a minor modification (e.g., moving a window by 30 cm) may justify an order.
• Photograph each stage: keep evidence of the compliance of the works. In the event of a challenge, these photos can demonstrate that you were complying with the permit.
• Inform your neighbours: a simple letter explaining your project can avoid complaints. Neighbours are often the source of municipal orders.
• Consult a lawyer as soon as the order is served: do not delay. The time limits for appeals are short (2 months before the administrative court). A lawyer can assess the legality of the order and advise you on the strategy to adopt.

Besoin d'un conseil personnalisé ? Contactez Maître Zakine — première consultation 30 min à 45€.

Further Reading: Related Case Law and Developments

This decision is part of a consistent line of case law from the Court of Cassation. Already in 1971 (Crim., 19 Jan. 1971, Bull. crim. no. 22), the Court held that the criminal judge must assess the legality of an administrative act when a plea is raised. More recently, a judgment of 23 November 2016 (no. 15-85.426) reiterated this principle regarding a dangerous building order. The trend is therefore clear: the criminal judge retains a power of review, even after an administrative decision. This means that town halls must be particularly rigorous in drafting their orders, as they risk having them annulled by two different judges.

One point to note: if the administrative court annuls the order (and not merely rejects the appeal), then the annulment decision has absolute authority of res judicata, and the criminal judge can no longer ignore it. This is the important nuance: the rejection of an appeal does not equate to an annulment.

Checklist Before Taking Action

FAQ:

1. I have received a stop-work order, what should I do? Do not stop the works immediately (unless there is serious risk). Consult a lawyer to check the legality of the order. You have 2 months to challenge it before the administrative court.
2. Can I continue the works despite the order? Be careful: if the order is legal, you risk criminal prosecution. If you challenge it and have strong arguments, you can apply for an interim suspension before the administrative court to continue the works.
3. What is the cost of a challenge? Expect between €1,500 and €3,000 in legal fees for proceedings before the administrative court, and more if criminal proceedings follow.
4. What are the time limits for action? Informal appeal to the mayor within 2 months of notification, then formal appeal within 2 months of the rejection of the informal appeal. In criminal matters, the limitation period for the public prosecution is 6 years.
5. What does the mayor risk if the order is illegal? The mayor may incur personal liability for fault (Article L. 2123-34 of the General Code of Local Authorities). You can claim damages for the loss suffered (e.g., delay in construction).

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