What permission should I have to settle a roof window?

Verified 27 January 2023 - Directorate for Legal and Administrative Information (Prime Minister)

Want to settle a roof window? An application for authorization is required.

The request for city planning authorization is different if your work is accompanied by a change of destination of all or part of the building, for example by transforming a business into a dwelling.

General case

By creating an opening on your roof or changing your roof windows to a different model, you change the exterior appearance of the building. You must file a Advance Work Statement (AD).

Change of destination

Your work changes the supporting structure or facade of the building and you change its destination: you must drop a building permit.

Who can help me?

Find who can answer your questions in your region

  • For information on city planning regulations and administrative procedures

    Telephone administrative information - Allo Public Service

    The informants who answer you belong to the ministry in charge of housing and city planning.

    Cost: free service

    Attention: the service does not have access to users' personal files and therefore cannot provide information on their progress.

    The service is available at the following times:

    • Monday: 8.30am to 5.30pm
    • Tuesday: 8:30 to 12:15
    • Wednesday: 8:30 to 12:15
    • Thursday: 8.30am to 5.30pm
    • Friday: 1 p.m. to 4:15 p.m
    • Lundi : de 08h30 à 17h30
    • Mardi : de 08h30 à 12h15
    • Mercredi : de 08h30 à 12h15
    • Jeudi : de 08h30 à 17h30
    • Vendredi : de 13h00 à 16h15

    Request a call

  • For information on your local city planning plan or advance declaration file

    Town Hall