(1) Use Regulations. The specific uses permitted in this district shall be the erection, construction, alteration, or use of buildings and/or land for:

(a) The uses permitted in "R-9" Residential Districts, subject to all qualifications imposed on such uses.

(2) Area Regulations.

(a) Lot Width and Area. The minimum lot width shall be 16 feet, and the minimum lot area shall be 1,440 square feet.

(b) Occupied Area. Not more than 70% of the lot area shall be occupied by buildings on intermediate lots and 80% of the lot area on corner lots.

(c) Open Area. The open area shall be not less than 30% of the lot area on intermediate lots, and 20% on corner lots, and shall consist of at least the required minimum rear yard, in all cases, plus such other front yards, side yards or open courts as shall be required to equal an area not less than the total open area required.

(d) Building Set-back Line. No building set-back shall be required in this district.

(e) Front Yards. Front yards shall not be required in this district.

(f) Side Yards and Courts. When side yards or courts are used or required, 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 have the following minimum widths:

(.1) Single-family dwellings and duplex dwellings, five feet (subject to exception for existing buildings, see § 14-104(12)).

(.2) Multiple dwellings and buildings other than dwellings, eight feet.

(g) Rear Yards.

(.1) The minimum depth of a rear yard shall be nine feet.

(h) Rear Yard Areas.

(.1) Single-family dwellings shall have a minimum rear yard area of 144 square feet;

(.2) Duplex dwellings shall have a minimum rear area of 244 square feet;

(.3) Multiple dwellings shall have a minimum rear yard area of 344 square feet, and shall have an additional 100 square feet of rear yard area for each additional family more than three families.

(3) Height Regulations.

(a) The maximum height of a dwelling shall be 35 feet above the average ground level at the base of the building, but in no case over three stories.

(b) The permitted height of non-residential buildings shall be 35 feet, except that one foot of additional height may be added for each additional foot the building sets back from all lot lines; provided, however, that the maximum height of any such building shall be 60 feet (subject to the provisions of § 14-231(2)).

(4) Off-street Parking. See § 14-1400 of this Title.