In Subdistrict C, as shown on Map 1 (Special Inwood District – Subdistricts and Subareas) in the Appendix to this Chapter, and in Subdistrict F, for buildings developed pursuant to the bulk regulations for Quality Housing buildings, the underlying height and setback provisions shall be modified for zoning lots that share a side lot line with an adjacent zoning lot that is developed with a building constructed prior to December 15, 1961 that contain residences with legally required windows facing and located within 15 feet of the shared side lot line.

The street wall location provisions of paragraph (b)(1) of Section 35-651 shall apply except that where an adjoining zoning lot contains residences with legally required windows facing and within 15 feet of a shared side lot line, the street wall of a building need not extend along the entire street frontage of such a zoning lot if an open area is provided above the level of the first story or a height of 15 feet, whichever is lower, along the entire shared side lot line. Where such an open area is provided, the street frontage of such open area may be excluded for the purpose of applying the street wall location provisions of paragraph (b)(2) of Section 35-651.

In addition, where an open area with a depth of at least 15 feet, as measured perpendicular from the shared side lot line, and is provided in the form of a recess, court or other open area is provided along shared side lot line, and such open area is provided adjacent to all portions of a building on an adjoining zoning lot that contain legally required windows facing and located within 15 feet of the shared side lot line, the maximum height for the building set forth in Section 23-662, 23-664, 35-652 or 35-654, as applicable, may be increased by 10 feet; and the maximum number of stories, if applicable, may be increased by one.

Zoning lots may apply the regulations of this Section along multiple side lot lines where applicable, but in no case shall the permitted building height be increased by more than one story or 10 feet, whichever is lower.