City planning: how long is an authorization valid?

Verified 23 July 2025 - Directorate of Legal and Administrative Information (Prime Minister)

You have obtained a city planning authorization (building, development, demolition or non-opposition to a prior declaration of work). It is valid for 3 years. An extension is possible. We present the regulations to you.

The building permit, to develop, to demolish or the decision not to oppose prior declaration of works have a validity period of 3 years.

This period shall start from notification the decision of the town hall. It is sent to you by mail RAR: titleContent (or electronically if you have accepted this method in the permit application form).

Depending on the method of transmission of the notification, the period of validity of your authorization starts on the following date:

  • 1re presentation of registered mail
  • The day after the date of sending the notification electronically.

Without a written response from the City Council, the validity period is calculated from the date of initial submission of the application.

Example :

A building permit order is sent by post RAR: titleContent . It is presented or received by hand on July 22, 2024. The permit is valid until July 22, 2027.

A building permit order is sent electronically on July 22, 2024. It is valid until July 23, 2027.

Your authorization no longer valid if you do not start the work within 3 years or if after this period you interrupt it for more than 1 consecutive year.

Please note

The period of validity of authorizations issued between 1er January 2021 and May 27, 2022 is 4 years.

The period of validity of authorizations issued between 28 May 2022 and 28 May 2024 shall be 5 years. In this case, the authorization cannot be extended.

The period of validity may be extended 2 times for a period of 1 year if the city planning rules and administrative easements have not changed.

You have to make it there request At least 2 months before the expiry of the initial period of validity of your city planning authorization (or before the end of the period of validity of your 1re request for extension).

Example :

An authorization valid from June 5, 2025 to June 5, 2028 can be extended for 1 year if you apply before April 5, 2028.

It can be extended a 2e times if you request it 2 months before the end of the 1re extension granted.

The request must be sent on free paper, in 2 copies, by letter RAR: titleContent or dropped off at city hall.

Upon receipt of your request, the town hall has 2 months to answer you.

The extension is granted if you do not receive a response within this time.

Only the valid city planning permissions may be extended.

If the city planning rules and administrative easements have changed, you cannot apply for an extension of your authorization. You must file a new application for city planning in accordance with the new rules.

Warning  

Authorizations issued between May 28, 2022 and May 28, 2024 have a validity period of 5 years. In this case, they cannot be extended at the end of 5 years.

After its validity period, your authorization is outdated.

You have to make a new request authorization in town hall.

Who can help me?

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  • Administrative information by phone - Allô Service Public

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