Which city planning authorization for an enlargement or elevation?
Verified 09 February 2023 - Directorate for Legal and Administrative Information (Prime Minister)
Do you want to expand or raise your house? You will create a surface and change the exterior appearance of your building. An application for authorization is required. We're presenting the regulations.
You must check whether your construction is in an urban area of a municipality covered by a MORE: titleContent or a Land Use Plan (SOP).
You also need to know if your land is located in one of the protected areas. These are the remarkable heritage sites, the approaches to historic monuments, classified or pending sites, natural reserves, remarkable spaces and coastal environments to be preserved.
You can get this information from your city hall.
Who shall I contact
Your construction is located in an urban area of a PLU
The choice of city planning authorization depends on the surface area of your building.
Creation of 40 m² or less
An extension of more than 5 m² is subject to Advance Work Statement (AD) when sound ground right of way and sadness floor area are less than or equal to 40 m².
If the extension brings the total floor area of the building to more than 150 m after the work, the use of an architect is required to file a building permit.
The choice of city planning authorization depends on the surface area of your building project.
Creation of 20 m² or less
A project of more than 5 m² is subject to Advance Work Statement (AD) when sound ground right of way and sadness floor area are less than or equal to 20 m².
In these sectors, a Advance Work Statement (AD) is required for a project of area less than or equal to 20 m2.
Who can help me?
Find who can answer your questions in your region
- Method of calculating the floor area
- Support for your city planning authorization request
- Prior declaration for a detached house and/or its annexes - DPMI
- Prior notification (construction, works, installations and facilities not subject to a building permit)
- Application for a building permit for a detached house and/or its annexes (CMIP)
- Application for a building permit (other than for a detached house or its annexes)