Si, devant les tribunaux de l'ordre

Application pratique:

Under this 1976 ruling, French civil courts only recognise a claim for breach of a planning setback rule (règle de reculement) if the claimant proves a direct causal link between that specific breach and their harm; here, the harm (loss of privacy from overlooking views) is a separate legal issue from the setback violation itself, so the two cannot simply be bundled together. She should instead bring a distinct claim based on the law of unlawful overlooking views (servitude de vue), which has its own distance and window-type requirements, rather than relying on the planning infraction. A lawyer should assess the exact distances and window types within 2 months of becoming aware of the works, since overlooking-view claims and planning-based claims follow different legal tests and often different time limits.

Application pratique:

This case law confirms that merely pointing to a planning rule violation is not enough; the co-owner must show what personal, direct harm flows specifically from the setback breach (e.g. loss of sunlight, drainage problems, structural risk) rather than listing the infraction as if it were self-evidently damaging. If his real complaint is about being overlooked or losing privacy, he must frame and prove that as a separate overlooking-view or nuisance claim, not as a consequence of the setback breach. He should document concrete, measurable effects of the setback itself (e.g. with a bailiff's report, 'constat d'huissier') before filing, since claims based only on administrative non-compliance are routinely dismissed for lack of direct causation.

Application pratique:

Following this 1976 precedent, the buyers cannot automatically claim damages or a price reduction simply because a planning setback rule was breached; they must demonstrate a direct, personal prejudice caused specifically by that breach, such as a real loss of value, light, or usable space attributable to the non-compliant positioning. If their actual grievance is that the veranda overlooks a neighbour's land (and not their own loss), that neighbour's claim — not theirs — would be the relevant one, and is legally separate from the planning issue. They should commission a surveyor's report quantifying the concrete impact of the 80cm breach before negotiating a price reduction, and act quickly, since hidden-defect claims (vices cachés) in France must generally be brought within 2 years of discovering the issue.