Within Subdistrict A, as shown on Map 1 in Appendix A of this Chapter, the underlying height and setback regulations shall apply, except that the street wall provisions of paragraph (a) of Section 35-631 (Street wall location) shall apply on wide street frontages in C4-7 Districts. The minimum and maximum base heights and the overall maximum building height provisions of Section 35-632, inclusive, shall be modified in accordance with the following table:

Above the maximum base height, a setback shall be provided in accordance with the provisions of Section 23-433.