(1) Definitions. In this section, the following special definitions apply:

(a) Court. Any court, as defined in § 14-102(15), extending to any open area on the lot;

(b) Group Dwellings. One or more structures intended for single-family, two-family, or multi-family occupancy on a lot;

(c) Structure. Any space enclosed within continuous exterior walls.
(2) Use Regulations. The specific uses permitted in this district shall be the erection, construction, alteration, or use of structures and/or land for:

(a) Group dwellings;

(b) Private dwelling garages, as an accessory use;

(c) Accessory uses, as defined;

(d) Signs, to the extent permitted in "R-2" Residential Districts.

(3) Area Regulations.

(a) Lot Width and Area. The minimum lot area shall be 15,000 square feet with a minimum frontage of 50 feet on a street.

(b) Floor Area. The gross floor area shall not exceed an area equal to 50% of the area of the lot.

(c) Distance from Lot Lines to Structures.

(.1) Every point on a structure shall be a minimum horizontal distance from every lot line which is not a street line equal to ¾ of the height of the point above the mean ground level at the base of said structure;

(.2) Every point on a structure which faces a street shall be a minimum horizontal distance from the centerline of said street equal to ¾ of the height of that point above the mean ground level at the base of said structure, except where a greater set-back is required by paragraph (e) below.

(d) Spacing of Structures. The required minimum spacing shall be as follows:

(.1) Between parallel structures (front-to-front, rear-to-rear or front- to-rear), 50 feet for structures of five stories or less. Spacing between structures of six stories or more shall be governed by subparagraph (.6) below;

(.2) Between obliquely aligned structures (front-to-front, rear-to-rear, or front-to-rear), the minimum distance required in the preceding subparagraph for structures of five stories or less may be decreased by as much as 10 feet at one end if increased by a similar or greater distance at the other end;

(.3) Between the end walls of structures where said walls contain no legally required windows, 20 feet at any point. Where legally required windows occur in one or both end walls of structures, and such walls face each other, this distance shall be 30 feet for one-story and two-story structures, 35 feet for three-story structures, 40 feet for four-story structures, and 45 feet for five-story structures. Spacing between the end walls of structures of six stories or more having legally required windows shall be governed by subparagraph (.6) below.

(.4) Between the end walls of a structure and the front or rear walls of another structure, or between the side walls of separate structures, 30 feet at any point for one-story and two-story structures, 35 feet for three-story structures, 40 feet for four-story structures, and 45 feet for five-story structures. Spacing of structures of six stories or more shall be governed by subparagraph (.6) below.

(.5) Between corners of adjacent structures that do not face each other or overlap, 20 feet at any point;

(.6) Spacing between all parts of structures of six stories or more shall be determined by the following requirements:

(.a) The measurements in this section shall be made from the center of the proposed window sill of each of the lowest legally required windows in a structure which faces upon the wall of another structure on the same lot;

(.b) Using the center of said window sill as the centerpoint of an arc, there shall be projected from each window, on a horizontal plane perpendicular to the side of the structure, an arc extending 70 degrees on either side of the centerline of the window, where "centerline of the window" is defined as a line drawn from the center of said sill perpendicular to the side of the structure;

(.c) Said arc, projected as set forth in the above subparagraph, shall be divided into 28 sectors of five degrees for each sector;

(.d) The "Unregulated Area." In any combination of 14 of the five degree sectors, the walls of another structure on the same lot may be of any height or any distance from said window, subject only to the provisions of subparagraphs (.3) and (.5) above. This shall be known as the "unregulated area."

(.e) The "Regulated Area." In any combination of 14 of the five degree sectors, the distance from the wall containing the legally required window to any other wall shall be:

(.1) equal to the height of said other wall, minus

(.2) the height of said legally required window above average ground level.

(.7) Spacing between structures of five stories or less and six stories or more shall be determined by computing the distance required for each type of structure (as herein set forth), and using the maximum requirement applicable.

(e) Building Set-back Line. The building set-back line shall be determined by the requirements of Section 14-212.1(3)(c).[31]

(f) Courts. The minimum width of courts between wings of the same structure shall be determined by the following requirements:

(.1) For buildings of three stories or less and not in excess of thirty-five feet high, the minimum width shall be not less than the length or depth of such court.

(.2) For buildings over three stories or over thirty-five feet in height, whichever is less, the minimum width shall be not less than the length or depth of such court plus one-third of that portion of the height of the building over three stories or thirty-five feet.

(4) Height Regulations. There shall be no height regulations in this district except as height may be limited by the other applicable provisions of this district.

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