In the NMU-7B/ES 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 twelve feet (12 ft.), except as permitted in Subtitle H § 706.2.
In the NMU-7B/ES zone, the maximum permitted height of a penthouse for mechanical space shall be fifteen feet (15 ft.).
The maximum number of stories for a penthouse or rooftop structure shall be one (1).
D.C. Mun. Regs. tit. 11, r. 11-H706