A building permit gives official permission from a local government entity to allow for new building construction, existing building renovation, or major repairs to an existing building. Property owners and contractors need a building permit for residential, commercial, or industrial properties. New building construction always requires a permit. The local government agency requires plans before issuing permits in most cases. After issuing the permit, the agency may need periodic inspections to make sure the work meets local building code and submitted plans. At the end of the building project, the inspector must do a last inspection before an occupancy permit goes out. Most major renovations of an existing buildings also need permits. Updates of major systems and making additions or structural changes are always on the list. Some repairs to existing buildings may need a permit in most jurisdictions.