A building permit is necessary for any detached garage, auxiliary structure, or storage building, unless the accessory building is less than 12 feet by 18 feet in size and is not linked to the land with a permanent footing and foundation system. The only exception is if the garage is used solely for storage purposes. If you meet these requirements, a building permit is not required. Garages can be any length but must be set back at least 15 feet from the property line and cannot block exit or entrance ways. Auxiliary structures include carports, breezeways, garages, sunrooms, greenhouse, tool sheds, and water tanks. The only requirement for these structures is that they must be completely separated from the main house by a wall or fence. Storage buildings are also considered an accessory structure and must be separated by a wall or fence from the main house. These structures can be any length but must be at least 12 feet wide and 6 feet high. The location of the garage is also important because it can have a big impact on the cost of construction. A garage should be located so that it does not interfere with the use of any part of the yard, including parking spaces. It should be away from walkways, driveway entrances, and other areas where damage could occur due to foot traffic. In general, the further back from the house you locate it, the cheaper it will be.