Every part of a required setback area shall be open to the sky, unobstructed except for permitted accessory buildings in a rear yard, the ordinary architectural projections of skylights, sills, belt courses, cornices, chimneys, flues, and other ornamental features that project into a yard not more than three feet (3'), and open or lattice enclosed fire escapes, fireproof outside stairways and balconies opening upon fire towers projecting into a setback area not more than five feet (5'). (Ord. 2012-15, 9-20-2012)