Four questions about the building and what you will do with it, then tick the works you intend to carry out.
This tool does not ask for an address and does not assess a specific property.
Four procedures and one repair.
No filing, no technician, no fee.
A technician certifies the works and files them; you may start the same day.
A full design, signed by a technician.
Art. 23 allows a SCIA instead of a building permit for heavy renovation.
A decision the municipality has to issue, after examining the project.
Not a fifth level but the repair of a missing one.
Content reviewed August 2026