1101. HEIGHT

1101 HEIGHT 1101.1 Except as provided in Subtitle D §§ 203.3 through 203.6, in the R-1B/GT and R-3/GT zones, the maximum permitted height and number of stories for buildings shall be as follows: Thirty-five feet (35 ft.) and three (3) stories, not including a penthouse or rooftop structure; or Forty feet (40 ft.), not including a penthouse or rooftop structure, only if a property adjacent on either side has a building height of forty feet (40 ft.) or greater. 1101.2 In the R-1B/GT and R-3/GT zones, the maximum height of a building shall be measured to the highest point of the roof or a parapet which is not a required firewall. 1101.3 In R-1B/GT and R-3/GT zones, a two (2) or more story addition to a principal building which has an existing second story side yard shall not exceed the vertical plane of that yard for the length of the second story addition. 1101.4 In R-1B/GT and R-3/GT zones, any parapet, pergola, railing, or similar rooftop structure, or penthouse shall not exceed the permitted building height by more than four feet (4 ft.). SOURCE: Final Rulemaking published at 70 DCR 011297 (August 25, 2023). District of Columbia Municipal Regulations Zoning Regulations of 2016: Residential House (R) Zones 11-D DCMR § 1101