Building permit annulled: the Court of Cassation clarifies the causal link required to obtain demolition

Imagine: you are the owner of a house in Vitry-le-François, in the Marne department. Your neighbour, Mr Y, builds a house on the boundary of your land. He obtained a building permit. But you discover that this permit has been annulled by the Paris Administrative Court for non-compliance with planning rules (Article L. 123-1 of the French Planning Code, which sets out building zones). You seek demolition of the house. The Court of Appeal rules in your favour. But the Court of Cassation quashes this decision. Why? Because, according to the court, it is not enough that there is an infringement of a planning rule to obtain demolition. It must also be proved that this infringement is directly the cause of your loss.

This decision of 19 February 1992 (No. 89-21.009) is a classic of property law. It concerns all owners, tenants or property professionals faced with an irregular construction. Whether you are in Sedan, Reims or elsewhere, you must understand what it actually changes. In other words, just because a building permit is annulled does not mean the building must necessarily be demolished. A direct causal link between the infringement and the damage you suffer must be shown. A nuance that matters.

In this article, I will tell you the story behind this decision, break down the reasoning of the Court of Cassation, and give you practical advice to avoid finding yourself in a similar situation. Because in my practice, I have come across cases where owners thought they had won because their neighbour's permit was annulled, without realising the complexity of the causal link. So, how should you react?

The facts: a story like any other day

Mr Y, owner of a plot of land in Paris (the dispute took place in the capital, but the case could just as easily have happened in Sedan or Vitry-le-François), obtains a building permit to build a house. He scrupulously complies with this permit. But a neighbour, Mr X, challenges the permit before the Administrative Court, which annuls it for violation of Article L. 123-1 of the Planning Code (a provision governing land use plans).

Mr X then sues Mr Y for demolition of the house, arguing that the construction is illegal and causes him loss: loss of view, overshadowing, depreciation of his property. The Paris Court of Appeal rules in his favour and orders demolition. But Mr Y appeals to the Court of Cassation. He argues that Mr X's loss is not directly linked to the planning infringement, but to the construction itself, which could have been authorised by a valid permit. In other words, it is not the absence of a permit that causes the damage, but the fact of having a house next door.

The Court of Cassation, in its judgment of 19 February 1992, quashes the decision of the Court of Appeal. It criticises the lower court for not having investigated whether there was a direct causal relationship between Mr X's personal loss and the infringement of a planning rule. In short, the Court of Appeal simply noted that the construction was without a permit and that it caused loss, but it did not check whether this loss would be the same if the permit had not been annulled (for example, if the construction complied with the rules on distance, height, etc.).

The court's reasoning — explained

The Court of Cassation relies on the fundamental principle of civil liability, set out in Article 1240 of the Civil Code (formerly Article 1382): "Any act of a person which causes damage to another obliges the person by whose fault it occurred to make reparation." To hold Mr Y liable, there must therefore be a fault, a loss and a direct causal link between them.

The fault here is the erection of the house without a valid building permit (the permit having been annulled retrospectively, the construction is deemed never to have been authorised). The loss is the nuisance suffered by Mr X (loss of sunlight, obstructed view, etc.). But the causal link is the weak link. The Court of Cassation requires that this link be direct: the loss must be the direct consequence of the absence of a permit, not of the construction itself. If the loss would have been identical even if the permit had been valid (for example, if the construction complied with all planning rules), then there is no causal link with the fault.

This decision is a confirmation of previous case law: the civil court is not mechanically bound by the annulment of the building permit. It must independently assess whether the planning infringement is the direct cause of the damage. However, note that this is not a reversal, but a reminder. The Court of Appeal had neglected this investigation, and the Court of Cassation refers the case back to it to examine this point.

What few people know: if Mr X had shown that the infringement (for example, non-compliance with set-back distances) was the direct cause of his loss (for example, the overshadowing), demolition could have been ordered. But in this case, the mere fact that the permit was annulled is not enough. In other words, administrative illegality does not automatically create a right to civil redress.

What this means for you — practically

For owners: if you are a neighbour of an irregular construction, do not celebrate too soon. Annulment of the building permit is a first step, but you must then prove that the loss you suffer (loss of value of your home, disturbance of enjoyment) is directly caused by the planning infringement. For example, in Sedan, if your neighbour builds a conservatory without a permit, but that conservatory complies with the legal distances and causes you no additional shading compared to what a valid permit would have allowed, you will not obtain its demolition. On the other hand, if the infringement concerns an excessive height that deprives you of a view, then the link is direct.

For tenants: you can also take action if your peaceful enjoyment is disturbed, but you will have to show the same causal link. For example, if the illegal construction of a neighbouring building blocks your light, your loss is direct if the infringement (e.g., non-compliance with setback rules) is the cause. But if the nuisance would be identical with a valid permit, you will not obtain redress.

For property professionals (developers, agents): this decision partly protects you. An annulled building permit does not automatically lead to demolition. You can defend your project by showing that the alleged loss is not linked to the infringement, or that the construction could have been authorised otherwise. This limits the risk of abusive litigation.

Example with figures: imagine a house in Vitry-le-François valued at €200,000. The construction of a neighbouring house without a permit causes a 10% loss in value, i.e., €20,000. If the permit had been valid, the loss would have been the same (because the house is identical). In this case, no direct link, no compensation. On the other hand, if the infringement concerns an excessive height that would have been prohibited by a valid permit, the loss in value (€20,000) is directly attributable to the infringement: you can seek redress.

If you are in this situation, you must: 1) check the exact nature of the planning infringement; 2) identify your precise loss (loss of value, disturbance of enjoyment); 3) demonstrate that without the infringement (i.e., if the construction had been compliant), you would not suffer this loss. A specialised lawyer can help you build this case.

Four tips to avoid this type of dispute

• Check your neighbour's building permit before they start work. Consult the planning department of your town hall (Vitry-le-François, Sedan, Reims…). If the permit seems irregular to you, challenge it promptly before the Administrative Court (two-month deadline from the date of posting). Once work is finished, it will be more difficult to obtain demolition.
• Document your loss as soon as the first disturbances appear. Take photos, measure sunlight, get an estate agent to value your property. These elements will help prove the direct causal link.
• Do not rely solely on the annulment of the permit. As the Court of Cassation reminds us, this is only one element among others. Consult a lawyer to assess your chances of obtaining demolition or damages.
• Consider a negotiated settlement. Before launching costly proceedings, propose a negotiated solution to your neighbour: modification of the construction, compensation, etc. Mediation can avoid years of litigation.

Further reading: related case law and developments

This 1992 decision is part of a consistent line of authority. For example, a judgment of the Court of Cassation of 7 July 1992 (No. 90-20.468) reminds that "the civil court can only order the demolition of a construction built without a permit if it finds the existence of an abnormal neighbourhood disturbance in direct relation to the absence of a permit." In other words, building without a permit is not in itself an abnormal disturbance; a specific loss is required.

More recently, the Court of Cassation specified that the civil court may also take into account the subsequent regularisation of the construction (for example, a amending permit). If the building becomes compliant, the demolition claim may be rejected (Civ. 3e, 19 March 2020, No. 19-10.531). This reinforces the idea that the causal link must be assessed at the time of judgment.

The trend of the courts is therefore not to automate demolition. They favour a pragmatic approach: if the loss can be remedied by damages, they prefer this solution to the destruction of a building. In future, aggrieved owners will have to be increasingly precise in demonstrating the direct link. A simple annulled permit will no longer suffice.

What you absolutely must remember

FAQ:

1. Can I obtain the demolition of a neighbouring construction if its building permit has been annulled? Not automatically. You must prove that the loss you suffer is directly caused by the planning infringement, and not by the construction itself.
2. What should I do if my neighbour builds without a permit? Report it to the town hall (planning department). If work is in progress, it can be stopped. Once finished, you can take legal action, but with the same requirements of causal link.
3. What are the time limits for taking action? To challenge a building permit: 2 months from the date of posting. For a demolition action based on civil liability: 5 years from the day the loss manifested itself.
4. What if the loss is purely aesthetic? The loss in market value of your property can constitute compensable loss, provided you show it is linked to the infringement (e.g., excessive height that would have been prohibited).
5. Can I claim damages instead of demolition? Yes, this is often simpler. Here too, you must prove the direct causal link, but the amount will be assessed by the judge.

In summary, remember this rule: annulment of the permit is only a ticket to entry. To win, you must prove that without the infringement, you would not have suffered this loss. A lawyer specialised in property law can help you build this case.

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 →