(1) Open Area. For purposes of determining usable open area, the open area provided shall be designated as either required open area and other open area, as follows:

(a) Required Open Area. The required open area shall consist of those yards herein specified and, in the aggregate, shall consist of a minimum of 25% of the total gross floor area permitted on the lot. Parking areas, including access roads and driveways, shall not be included as part of the required open area of the lot;

(b) Other Open Area. Other open area shall consist either of those yards permitted but which are of insufficient dimension to be included as part of the required open area or on-site open air parking areas, including access roads and driveways;

(2) Yards.

(a) Front Yards. Front yards shall not be required in this district. If provided, they must be a minimum of 8 feet in depth to be considered as part of the required open area;

(b) Side Yards and Courts. When side yards or courts are used, except inner courts and open courts between the wings of the same building which are governed by the provisions of §14-231(1), they shall be provided as follows:

(.1) Side yards and courts shall be a minimum of 9 feet in width to be considered as part of the required open area;

(.2) Side yards and courts may be permitted as part of other open area to a minimum of 5 feet in width;

(c) Rear Yards. When rear yards are used, they shall be provided as follows:

(.1) Rear yards shall be a minimum of 9 feet in depth to be considered as part of the required open area;
(.2) Rear yards may be permitted as part of other open area to a minimum of 5 feet in width.

(3) Off-street Parking. Off-street parking shall be provided in accordance with Chapter 14-1400 of this Title; provided, however, that accessory parking areas shall be located within a distance of 200 feet of the dwelling units they serve. In addition, if parking is provided on another lot: (a) said lot must be deeded with the primary lot for which parking is accessory; (b) said lot must also be zoned class "R-20" Residential District; and (c) off-site parking areas designated for parking for specified units may not be deleted as accessory parking and the land use changed, unless replacement of an identical number of parking spaces is provided in accordance with the provisions of this Title.