The district regulations hereinafter set forth in this section qualify or supplement, as the case may be, the district regulations appearing elsewhere in this title:
(A) Additional Height Regulations:
1. Single-family dwellings and two-family dwellings may be increased in height by not more than ten feet (10') when the side and rear yards are increased over the yard requirements of the district in which they are located by not less than ten feet (10') each, but they shall not exceed three (3) stories in height.
2. Chimneys, cooling towers, elevator bulkheads, fire towers, monuments, stacks, stage towers or scenery lofts, tanks, water towers, ornamental towers and spires, radio towers or necessary mechanical appurtenances, may be erected to a height in accordance with existing or future ordinances of the Governing Body.
(B) Additional Area Regulations:
1. No accessory building shall be constructed upon a lot until the construction of the main building has been actually commenced, and no accessory building shall be used for dwelling purposes unless the main building on the lot is also being used for dwelling purposes.
2. More than one industrial, commercial, multiple dwelling or institutional building may be erected upon a single lot or tract, but the yards and open spaces required around the boundaries of the lot or tract shall not be encroached upon by any such buildings, nor shall there be any change in the intensity of use requirements.
When more than one multiple dwelling building is erected upon a single lot or tract, the minimum distances between main buildings shall be the following:
(a) Front to front, seventy feet (70'); front to rear, sixty feet (60').
(b) Side to side, one-half (1/2) the height of the taller building but not less than twenty feet (20').
(c) Front to side or rear to side, the height of the taller building but not less than thirty feet (30').
(d) Rear to rear, fifty feet (50').
3. Where an open space is more than fifty percent (50%) surrounded by buildings, the minimum width of the open space shall be thirty feet (30') for one-story buildings, forty feet (40') for two-story buildings and fifty feet (50') for three- story buildings.
4. All distance requirements and buffer area or screening requirements established for the protection of R districts shall be applicable to any trailer (mobile home) court existing or hereafter established.
(C) Additional Yard Regulations:
1. In computing the depth of a rear yard, where such yard opens onto an alley, one-half (1/2) of the alley width may be included as a portion of the rear yard.
2. No accessory buildings which are not a part of the main building may be built in any yard but a rear yard and shall be at least five feet (5') from the rear lot line. An accessory building which is not a part of the main building shall not occupy more than thirty percent (30%) of the required rear yard.
3. Every part of a required yard shall be open to the sky, unobstructed, except for accessory buildings in a rear yard, and except for the ordinary projections of skylights, sills, belt courses, cornices and ornamental features projecting not to exceed twelve inches (12"). This requirement shall not prevent the construction of fences not exceeding eight feet (8') in height, except on that portion of lots within thirty feet (30') of the intersection of two (2) or more streets.
4. Open, or lattice-enclosed fire escapes, fireproof outside stairways and balconies opening upon fire towers projecting into a yard not more than five feet (5') and the ordinary projections of chimneys and flues may be permitted by the Code Enforcement Officer.
5. For the purposes of side yard requirements, a two-family dwelling shall be considered as one building occupying a single lot.
6. An open unenclosed porch not more than one story in height or paved terrace may project into the required front yard for a distance not exceeding ten feet (10'). An enclosed vestibule containing not more than forty (40) square feet may project into the required front yard for a distance not to exceed four feet (4').
7. Terraces, uncovered porches, platforms and ornamental features which do not extend more than three feet (3') above the floor level of the first (ground) story may project into a required yard, provided these projections be distant at least two feet (2') from the adjacent side lot line.
8. When forty percent (40%) of a frontage is developed with two (2) or more buildings, then the depth of the front yards heretofore established shall be adjusted in the following manner:
(a) When the building furthest from the street provides a front yard no more than ten feet (10') deeper than the building closest to the street, then the average depth of the front yard for such frontage shall be the minimum depth of front yard for new buildings in such block.
(b) When the foregoing subsection is not the case and the lot is within one hundred feet (100') of an existing building on each side, excluding, however, buildings on corner lots which front upon the intersecting street, then the depth of the front yard is determined by a line drawn from the closest front corners of these two (2) adjacent buildings.
(c) When neither subsection (C)8(a) nor (C)8(b) of this section is the case and the lot is within one hundred feet (100') of an existing building on one side only, excluding, however, buildings on corner lots which front upon the intersecting street, then the depth of the front yard is the same as that of the existing adjacent building.
9. In all districts a triangular space must be maintained at the street corner of a corner lot, free from any kind of obstruction to vision between the heights of three feet (3') and twelve feet (12') above the established street grade. The street grade is measured at the intersection of the center lines of the intersecting street pavements, and the triangular space is determined by a diagonal line connecting two (2) points measured fifteen feet (15') equidistant from the intersection of the property lines or the property lines extended on the corner of the lot using each of the street right-of-way lines.
10. In single-family dwelling districts, when eighty percent (80%) of the frontage of a block on both sides of the street between two (2) intersecting streets or between an intersecting street and a cul-de-sac has been developed with main buildings and accessory buildings with side yards less than that required by the dwelling district in which said property is situated, then the side yard requirements for any main building or accessory buildings in said block shall be the average side yard of all parcels of property in said block rather than the side yard set forth in the dwelling district in which said parcel of property is situated. In determining the existing side yard of any developed parcel, in order to compute the average herein required, the side yard of the main building on any developed parcel shall be used except that when an accessory building exists with a smaller side yard than the main building has, the side yard shall be taken as being the average between the side yard of the main building and the side yard of the accessory building. (Ord. 69-23, 4-6-1970)