Notwithstanding subsection (B)(2) of this Section, cornices, eaves, canopies, fireplaces, oriel windows, bay windows and other similar architectural features, proposed for an accessory dwelling unit constructed on top of an existing or proposed accessory building, such as a garage or shop, or on top of another accessory dwelling unit (see SJBMC 11-04.5-100 for multifamily dwelling building), shall not exceed the required side and rear setback areas for accessory buildings in the same zoning district.