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In the districts indicated, where mapped within, or with a residential equivalent of an R6 through R12 district, the height and setback regulations of Section 23-43 (Height and Setback Requirements in R6 Through R12 Districts), inclusive, shall be applied in accordance with the provisions set forth in this Section.

1. Height and setback requirements
   
   The minimum base height, maximum base height and maximum building height shall be as set forth in the table in Section 23-432 for the applicable Residence District. Separate maximum base heights and maximum building heights are set forth for zoning lots containing standard residences and zoning lots containing qualifying affordable housing or qualifying senior housing. For portions of a building street wall that exceed the maximum base height, a setback shall be provided at a height not lower than the minimum base height or higher than the maximum base height, in accordance with Section 23-433.
2. Height and setback modifications on eligible sites
   
   In Commercial Districts mapped within, or with a residential equivalent of R6 through R12 without a letter suffix, for zoning lots meeting the criteria of paragraph (a) of Section 23-434, the maximum building heights may be increased in accordance with the table in Section 23-434 for the applicable Residence District.
3. Tower regulations
   
   In Commercial Districts mapped within, or with a residential equivalent of R9 through R12 Districts, other than R9A, R9X, R10A or R11A Districts, as an alternative to the maximum building heights set forth in Sections 23-432, towers shall be permitted pursuant to the provisions of Section 23-435.