The requirements in the area regulations in all foregoing sections of this title shall be subject to the following exceptions and regulations:
A. Every part of a required yard shall be open from the ground to the sky unobstructed, except for:
1. The projections of sills, belt courses, cornices, gutters, downspouts, and ornamental features not exceeding four inches; and,
2. The projection of bay windows and balconies into front and rear yards not exceeding eighteen inches.
B. The ordinary projections of chimneys and flues into front and rear yards not exceeding twelve inches may be permitted, provided written permission is first obtained from the Director of Public Works.
C. No yard, court or other open space provided about any building for the purpose of complying with the provisions of these regulations shall again be used as a yard, court or other space for another building.
D. Any building lawfully erected prior to May 6, 1922, which does not conform to the height and area regulations hereof shall not be altered if said alteration constitutes a violation of any of that districts height or area regulations. (Ord. 2640, 5-23-1995)