603.1 In the RA-2/RC zone, the maximum permitted height of a penthouse or rooftop structure, except as limited in Subtitle C § 1501 on the roof of a single household dwelling or flat, shall be as set forth in the following table:

TABLE F § 603.1: MAXIMUM PENTHOUSE OR ROOFTOP STRUCTURE HEIGHT AND NUMBER OF STORIES

Zone	Maximum Height (ft.)	Maximum Number of Stories
RA-2/RC	12, except 15 for penthouse mechanical space	1

SOURCE: Final Rulemaking published at 63 DCR 2447, 2915 (March 4, 2016 – Part 2); as amended by Final Rulemaking published at 68 DCR 013834 (December 24, 2021); as amended by Final Rulemaking published at 70 DCR 011297 (August 25, 2023).