(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-7" Residential Districts, subject to all qualifications imposed on such uses;

(b) Attached single-family and attached duplex dwellings.

(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 50% of the lot area shall be occupied by buildings.

(c) Open Area. The open area shall be not less than 50% of the lot area and shall consist of at least the minimum front and rear yards in all cases, plus such other side yards and open courts as shall be required to equal an area not less than the total open area required.

(d) Building Set-back Line. The building set-back line shall be 15 feet from all street lines.

(e) Front Yards. The minimum depth of a front yard shall be the depth required between the street line and the building set-back line, as herein specified.

(f) 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 have the following minimum widths:

(.1) Every detached single-family dwelling and every detached duplex building, shall have two side yards, neither of which shall be less than eight feet wide; provided, that every such dwelling or building located on a corner lot shall have the building set-back on the intersecting street adjudged a side yard (which shall not be less than the set-back required), and the other or inside yard shall not be less than six feet wide (subject to exception for existing buildings, see § 14-104(12)).

(.2) Every semi-detached single-family dwelling and every semi-detached duplex shall have a side yard not less than eight feet wide; provided, that where an attached single-family dwelling or attached duplex dwelling has a side yard it shall not be less than eight feet in width; and provided further, that such a dwelling located on a corner lot shall have the building set-back on the intersecting street adjudged a side yard, which shall not be less than the set-back required (subject to exception for existing buildings, see § 14-104(12)).

(.3) Every building other than a dwelling shall have two side yards, neither of which shall be less than 8 feet wide (subject to exception for existing buildings, see § 14-104(12)).

(.4) No court in an attached building shall be less than five (5) feet in width (subject to exception for existing buildings, see § 14-104(12)).

(g) Rear Yards.

(.1) The minimum depth of a rear yard shall be 15 feet.

(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.