The maximum permitted building height, not including the penthouse or rooftop structure, in the D-2 zone shall be one hundred feet (100 ft.) for a building subject to Inclusionary Zoning by Subtitle C, Chapter 10, and ninety feet (90 ft.) for all other buildings.
The maximum permitted building height, not including the penthouse or rooftop structure, in the D-2 zone shall be limited to ninety feet (90 ft.) on the portion of the site occupied by a historic landmark or a contributing building within a historic district.
The maximum permitted height of a penthouse or rooftop structure shall be twenty feet (20 ft.). The maximum permitted number of stories for penthouse habitable space shall be one (1) plus a mezzanine, except a second story shall be permitted for penthouse mechanical space.
The maximum permitted building height, not including the penthouse or rooftop structure, of a building without frontage on a street with a right-of-way width of at least ninety feet (90 ft.), and not subject to Subtitle I § 510.2, shall be the width of the street right-of-way, plus twenty feet (20 ft.).
D.C. Mun. Regs. tit. 11, r. 11-I510