Section 23-436 - Additional height and setback provisions
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In the districts indicated, the following additional regulations shall apply:
Existing buildings may be vertically enlarged by up to one story or 15 feet without regard to the street wall location requirements of Section 23-431 . On through lots which extend less than 190 feet in maximum depth from street to street , the street wall location requirements of Section 23-431 shall be mandatory along only one street frontage. On corner lots , or portions thereof, the street wall location requirements of Section 23-431 shall be mandatory along only one street frontage. Where one of the street frontages bounding the corner lot is a wide street and the other a narrow street , the street wall location rules shall be applied along the wide street frontage; The street wall location and minimum base height provisions of Sections 23-431 and 23-432 , respectively, shall not apply along any street frontage of a zoning lot occupied by buildings whose street wall heights or widths will remain unaltered. The minimum base height provisions of Section 23-432 shall not apply to buildings , or portions thereof, that are developed or enlarged and do not exceed such minimum base heights. For any zoning lot located in a Historic District designated by the Landmarks Preservation Commission, the street wall location and minimum or maximum base height regulations of Section 23-43 , inclusive, or as modified in any applicable Special District, may be modified as follows: The minimum base height of a street wall may vary between the applicable minimum set forth in Section 23-432 , and the height of the street wall of an adjacent building before setback, if such height is lower than the minimum base height; and The maximum base height of a street wall may vary between the applicable maximum set forth in Section 23-432 , inclusive, and the height of the street wall of adjacent building before setback, if such height is higher than the maximum base height. Where a continuous sidewalk widening is provided on the zoning lot , along the entire block frontage of a street , the boundary of the sidewalk widening shall be considered to be the street line for the purposes of applying the provisions of Section 23-431 , but such widening may be included in the setback reductions permitted pursuant to paragraph (a) of Section 23-433.