For permitted residential uses, the provisions of Section 23-44 (Permitted Obstructions in Required Yards or Rear Yard Equivalents) shall apply with the following modifications:

(a)        open accessory off-street parking spaces shall not be located within a front yard unless such spaces are located in a permitted side lot ribbon;

(b)        three-foot overhangs in a required 18-foot front yard in R4 or R5 Districts shall not be permitted; and

(c)        balconies shall not be a permitted obstruction in rear yards or rear yard equivalents.