The purposes of the Capitol Interest Mixed-Use zones (MU-23, MU-24, and MU-26) are to:

  • Promote and protect the public health, safety, and general welfare of the U.S. Capitol precinct and the area adjacent to this jurisdiction, in a manner consistent with the goals and mandates of the United States Congress in Title V of the Legislative Branch Appropriation Act, 1976 (Master Plan for Future Development of the Capitol Grounds and Related Areas), approved July 25, 1975 (Pub. L. No. 94-59, 89 Stat. 288), and in accordance with the plan submitted to the Congress pursuant to the Act;
  • Respect the importance of and provide sufficient controls for the area adjacent to the U.S. Capitol;
  • Provide particular controls adjacent to properties having a well-recognized general public interest; and
  • Restrict some of the permitted uses to reduce the possibility of harming the site, building, or district to be protected.

The MU-23 zone is intended to permit medium-density areas predominantly developed with residential buildings.

Development Standards
Floor Area Ratio (max.) Height (ft.) Penthouse Height (ft.)/Stories Lot Occupancy
Rear Yard (ft.)1 Side Yard (ft.) Green Area Ratio Zoning Regulation Reference
MU-23 1.8 40
(3 Stories)
(1 story)
80 12 ft. If a side yard is provided, it shall be at least two inches (2 in.) wide for each one foot (1 ft.) of height of building, but no less than five feet (5 ft.). 0.30 Subtitle G, Chapter 7
2.16 (IZ) 8 ft. for attached or semi-detached dwelling.

Use Permissions Courts Parking Inclusionary Zoning
Subtitle U, Chapter 5 Subtitle G § 202 Subtitle C, Chapter 7 Subtitle C, Chapter 10

1 Where a lot does not abut an alley, the rear yard shall be measured from the rear lot line to the rear wall of the building or other structure.