How long does a building permit? Building permits are transitory records issued by a neighborhood building examination office and are required for some home repair or change ventures. They are required with a specific end goal to guarantee the work is investigated by approved examiners, keeping in mind the end goal to check that the work is done securely. Notwithstanding, prerequisites shift a lot from state to state, and even between networks inside a similar state. In a few networks, many repairs can be made with no necessity for allow or assessment, while different networks are very traditionalist and will require grants and examinations for some, if not most, real repairs.