Four questions about the building and what you will do with it, then tick the works you intend to carry out.
This is a tool for framing the situation, not for checking a 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