Construction permit - AC - represents the document issued by the local public authority, based on which the applicant can carry out construction works. The construction permit is issued by the Urban Planning Service within the Town Hall / sector where the land is located.

The issuing authority of the construction permit will establish a validity period of up to 12 months from the date of issuance and it can be extended by another 12 months, during which the applicant is required to start the works. In this situation, the validity of the permit is extended for the entire duration of the execution of the works provided for in the permit, in accordance with the technical project.
Failure to start the works or to complete them within the established deadlines leads to the loss of the validity of the permit, making it necessary to issue a new construction permit. If the characteristics do not change compared to the initial permit, a new construction permit can be issued without the need for a new urbanism certificate.