Planning Infraction Report: Lack of Oath by Official Prevents Prescription

Imagine: you have just bought a house in Montbrison, and suddenly you receive a letter from the town hall informing you that your garage extension, built three years ago by the previous owner, is illegal. The municipality demands a fine and demolition. You are worried, because the limitation period (the time after which you can no longer be prosecuted) is three years for planning matters. But a municipal officer drew up a report (an official record) two years ago. Did this document interrupt the limitation period? It all depends on one detail: was the officer sworn (i.e., had he taken an oath before a court)?

The Court of Cassation (the highest French court) answered this question on 26 July 1965 in a case that remains authoritative today. A municipal official who has not been sworn to report offences under the Planning Code cannot, through his report, interrupt the limitation period. In other words, if the officer has not taken the oath, his report is as ineffective as an unsigned registered letter for stopping the clock.

But what exactly does this change for you? And how can you know if the report threatening you is valid? In this article, I will tell you the story of this decision, analyse the judges' reasoning, and give you practical advice to avoid or manage this type of dispute, whether you are an owner, tenant or property professional.

The Facts: A Story Like Many Others

The case begins like many planning disputes: construction without permission. Mr Raymond, an owner in Montbrison, carried out works without obtaining the required planning permission. The municipality, through a municipal official, drew up a report of the offence dated 20 March 1957. This report was supposed to interrupt the limitation period for the public prosecution (the three-year period for prosecuting the offence). However, this official had not been sworn to report offences under Title VII of Book I of the Planning Code, as required by Article 101 of that Code.

The public prosecutor's office initiated criminal proceedings against Mr Raymond. He challenged the validity of the report and raised the limitation defence: according to him, the three-year period had run without valid interruption because the official was not sworn. The Paris Court of Appeal, in a judgment of 24 February 1964, upheld the prosecution. It considered that a broad interpretation of Article 101 of the Planning Code should be adopted, and that the absence of an oath did not prevent the report from interrupting the limitation period. Mr Raymond appealed to the Court of Cassation.

Before the Court of Cassation, the debate was technical but crucial. Article 101 of the Planning Code provides that "officials and agents sworn for this purpose" may report offences. The question was: can an unsworn official nevertheless draw up a report that interrupts the limitation period? The Court of Cassation answered no. It quashed (annulled) the judgment of the Paris Court of Appeal, on the ground that the absence of an oath deprives the report of any interruptive effect.

The Court's Reasoning — Analysed

The Court of Cassation based its decision on Article 101 of the Planning Code (now codified in Article L. 480-1 of the Planning Code). This provision states that only "officials and agents sworn for this purpose" may report offences. The Court considered this condition to be a substantive formality (an essential condition, without which the act is void). The fact that the official had not taken the oath before the judicial court to report planning offences renders his report incapable of interrupting the limitation period.

The Court of Appeal had adopted a broad interpretation, considering that Article 101 should be read as a simple authorisation (a permission given to certain agents) and not as a condition of validity. But the Court of Cassation rejected this reading: the legislature intended that only sworn agents, who are therefore criminally liable for false statements, may report offences. Without an oath, the report is merely a simple statement without particular probative force.

There was no derogation from this rule by Article 16 of the Decree of 10 August 1946, as the defence had argued. That Decree concerned law enforcement officers, not municipal officials.

In short, the decision confirms a strict rule: for a planning offence report to interrupt the limitation period, the officer drawing it up must be specifically sworn for that purpose. This is not a mere administrative formality; it is a safeguard for the individual.

What This Changes for You — Practically

This decision has important practical consequences, depending on your situation.

Landlord or Occupying Owner: If you receive a report for works without planning permission, immediately check whether the officer is sworn. The officer's name and the mention of his oath must appear on the report. If not, the three-year limitation period continues to run. Example: in Saint-Étienne, an owner built a conservatory without permission in 2020. In 2023, an unsworn municipal officer draws up a report. The limitation period expires in 2023 (3 years after the works). The report did not interrupt the period, so the prosecution is time-barred.

Purchaser: Before buying a property, ask the seller whether he has received any reports. If so, check their validity. A non-interruptive report may leave the limitation period open, meaning you could be prosecuted after the purchase.

Property Professional: When assisting a client, inform them of this risk. The case law has been consistent since 1965: the oath is a condition for the validity of an interruptive report.

Co-owner: If the co-ownership is subject to a report for modification works, check the officer's oath.

However, note: the absence of an oath does not prevent the report from serving as a simple piece of information for the administration. But to interrupt the limitation period, it must be valid.

What few people know: the oath must be specific to planning offences. An officer sworn for environmental offences is not automatically sworn for planning matters.

Four Tips to Avoid This Type of Dispute

• Check the oath upon receipt of a report: The report must mention the officer's oath. In the absence of this mention, challenge it by registered letter with acknowledgement of receipt to the public prosecutor.
• Keep all documents for five years: The limitation period for criminal prosecution is three years, but civil remedies (e.g., an action for demolition) may be longer. Keep your permits, prior declarations and correspondence.
• If in doubt, consult a lawyer before signing anything: Do not admit the offence without legal advice. An admission may restart the limitation period.
• For professionals: train your teams: Ensure that agents authorised to report offences are properly sworn. A lack of oath can lead to the annulment of the proceedings.

Further Reading: Related Case Law and Developments

The 1965 solution has been confirmed several times. For example, the Court of Cassation held in a judgment of 20 November 1990 (No. 89-83.613) that the report of a rural guard not sworn for planning offences was void. Similarly, the Criminal Chamber reminded in 2003 (No. 02-86.481) that the oath is a condition for the validity of an interruptive report.

However, courts are more flexible regarding the form of the oath: a one-time oath taken before the High Court is sufficient. There is no need to renew the oath for each inspection.

The trend is therefore strict on substance (requirement of an oath) but tolerant on form (no excessive formalism).

What to remember: since 1965, the rule is clear and has not changed. Courts strictly apply Article 101 of the Planning Code.

In Practice: What to Do

Checklist: what to do if you receive a planning offence report?

1. Check the oath: Read the report carefully. Look for the mention "sworn" or "oath taken". If missing, the report is probably non-interruptive.
2. Calculate the limitation period: When were the works completed? If more than three years have passed without valid interruption, the criminal prosecution is extinguished.
3. Challenge in writing: Send a registered letter with AR to the public prosecutor stating that the report is void for lack of oath. Request a dismissal.
4. Consult a lawyer: If the limitation period has not expired or if you have doubts, seek advice promptly. A lawyer specialising in property law can analyse the situation.
5. Regularise the works: If the works comply with the Local Planning Plan, submit an application for a retrospective planning permission or a prior declaration. This may extinguish the proceedings.

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