“Residential accessory use” means a subordinate use which supports the principal residential use without displacing it. The accessory residential use is typically located on the same lot occupied by the principal residential use. Residential accessory uses include residential garage, guest cottage, recreation room, tool shed, swimming pool, noncommercial greenhouse, private stable, barn, pen, coop, or similar structure. This use excludes accessory dwelling units, as defined in ACC 18.04.018, and manufactured home community accessory uses. (Ord. 6245 § 3, 2009.)