“Accessory” means a use, a building or structure, part of a building or other structure, which is subordinate to and the use of which is incidental to that of the main building, structure or use on the same lot, including a private garage. If an accessory building is attached to the main building by common wall or roof, such accessory building shall be considered a part of the main building. (Ord. 2020 § 2, 1994; Ord. 190 Art. IV § 401, 1964)