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C4 C6
Except in the locations indicated on Map 4 (Street Wall Height) in Appendix A of this Chapter, the minimum and maximum heights before setback of a street wall required pursuant to Section 115-232 (Street wall location), shall be as set forth in the following table:

District
Minimum Street Wall Height
Maximum Street Wall Height
C4-4A
40 feet
65 feet
C4-5X
40 feet
85 feet
C6
40 feet
60 feet
However, in C4-4A and C4-5X Districts, the maximum street wall height may be modified for Quality Housing buildings with qualifying ground floors in accordance with Section 23-662 (Maximum height of buildings and setback regulations) for the applicable residential equivalent set forth in the tables in Section 35-23 (Residential Bulk Regulations in Other C1 or C2 Districts or in C3, C4, C5 or C6 Districts). In addition, for buildings meeting the criteria set forth in paragraph (a) of Section 23-664 (Modified height and setback regulations for certain Inclusionary Housing buildings or affordable independent residences for seniors), such maximum street wall heights may be modified in accordance with the provisions of paragraph (b) of Section 23-664 for the applicable residential equivalent of such districts.
Any portion of a building that exceeds the maximum height of a street wall shall be set back at least 10 feet from a wide street line and at least 15 feet from a narrow street line.
In the locations indicated on Map 4, required street walls shall rise without setback to the minimum height specified for that location on Map 4 or the height of the building, whichever is less. Any portion of a building that exceeds the maximum street wall height specified for that location shall be set back at least 10 feet from a wide street line and at least 15 feet from a narrow street line.
However, in the locations indicated on Map 4 where no maximum street wall height or setback is required, street walls required pursuant to Section 115-232 shall rise without setback to a minimum height of 40 feet or the height of the building, whichever is less. Above a height of 40 feet, no setbacks are required for any portion of such street wall.

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