An accessory building may be located in the required rear or side yard, provided that an accessory building in the side yard abutting a street must meet the front yard setback of dwellings facing the abutting street. An accessory building may not be less than five feet from any property line. No accessory building shall exceed 16 feet in height, and the total floor area of all accessory buildings on a lot shall not exceed 750 square feet. An accessory building shall not be used to operate a business or as a residence.