The applicable district regulations pertaining to permitted or required off-street parking facilities accessory to residential uses shall apply to all developments on waterfront blocks except as modified in this Section or in Section 62-45 (Supplementary Regulations for All Parking Facilities).
On waterfront blocks, parking spaces accessory to residential uses may be located on the roof of a building, or portion thereof, that does not contain dwelling units or rooming units, provided that:
(a) the roof level is not higher than 23 feet above the base plane;
(b) the perimeter of the roof is enclosed by a four foot high parapet wall or other enclosure at least 50 percent opaque;
(c) trees are provided in accordance with Section 62-655 (Planting and trees) at the rate of one tree for each 10 parking spaces for parking areas at grade;
(d) if on the roof of a portion of a building containing dwelling units or rooming units, the sill level of any dwelling unit or rooming unit windows opening onto such roof area is at least 10 feet above the roof and no parking spaces or vehicular aisles are located within 10 feet of a wall with dwelling unit or rooming unit windows; and
(e) no flood lighting shall be permitted and any lighting shall be directed away from any residential windows on the same or an adjacent zoning lot.
For developments on waterfront blocks, the provisions of Sections 25-52 and 36-42 (Off-site Spaces for Residences) shall be modified so as to permit all permitted or required accessory spaces to be located on a separate zoning lot, provided that:
(a) such off-site facility is not located in an R1, R2, R2X, R3-1, R3A, R3X, R4-1, R4A or R4B District;
(b) if such off-site facility is located in other R3, R4 or R5 Districts, such off-site facility is contiguous or would be contiguous except for its separation by a street or street intersection to the zoning lot occupied by the residences to which the spaces are accessory;
(c) if such off-site facility is located in other than a R3, R4 or R5 District, all parking spaces shall not be further than 1,000 feet from the nearest boundary of the zoning lot occupied by the residences to which they are accessory;
(d) in R3, R4 and R5 Districts, such off-site facility shall be an open lot not exceeding 12,000 square feet. In other districts, parking structures shall be permitted and the maximum size of the facility shall be governed by the provisions of Sections 25-12 and 36-12 (Maximum Size of Accessory Group Parking Facilities);
(e) in Residence Districts, no parking spaces are located within a required front yard or within four feet of any lot line. Front yards shall be planted and screening shall be provided along any lot lines in accordance with Section 62-655 (Planting and trees);
(f) in all districts, lighting shall be directed away from adjoining buildings containing residences. In no event shall flood lighting be permitted for off-site facilities in Residence Districts; and
(g) in all districts, trees shall be provided in accordance with Section 62-655 at the rate of one tree for each 10 parking spaces for on-site facilities within a waterfront block.