Zoning Handbook

The Mixed-Use (MU) zones provide for mixed-use developments that permit a broad range of commercial, institutional, and multiple dwelling unit residential development at varying densities. The MU-15 through MU-22 zones specifically cover the Dupont Circle area with the intention of protecting and enhancing the unique characteristics of the neighborhood.

The purposes of the Dupont Circle Mixed-Use zones are to:

  • Require a scale of development consistent with the nature and character of the Dupont Circle area in height and bulk and ensure a general compatibility in the scale of new buildings with older, low-scale buildings;
  • Enhance the residential character of the area by maintaining existing residential uses and controlling the scale, location, and density of commercial and residential development;
  • Preserve areas planned as open gardens and backyards and protect the light, air, and privacy that they provide;
  • Enhance the streetscape by maintaining the public space in front of buildings as landscaped green spaces and limited curb cuts on Connecticut Avenue; and
  • Encourage greater use of public transportation and the free circulation of vehicles through public streets and alleys.

The MU-18 zone is intended to permit medium-density, compact mixed-use development with an emphasis on residential development

mu-18
Development Standards
Floor Area Ratio (max.)1 Height (ft.) Penthouse Height (ft.)/Stories Lot Occupancy
(percentage)
Rear Yard (ft.)2, 3, 4 Side Yard (ft.) Green Area Ratio Zoning Regulation Reference
MU-18 3.5 65 12 (1 story) 100 15 ft. None required; however, if a side yard is provided it shall be at least 2 in. wide for each 1 ft. of height of building but no less than 5 ft. 0.30 Subtitle G, Chapter 6
4.2 (IZ) 70 (IZ) 18 ft. 6 in. (Second story permitted for penthouse mechanical space) 8 ft. for a single-family detached or semi-detached dwelling
1.5 (non-residential)

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

1 An existing building on a lot with an area 10,000 sq. ft. or less, may have a maximum density of 2.0 FAR for non-residential uses, provided the uses are located in the ground story and the story directly above the ground story.
2 A horizontal plane may be established at 25 ft. above the mean finished grade at the middle of the rear of the structure for the purpose of measuring rear yard
3 Where a lot abuts an alley: (1) For that portion of the structure below a horizontal plane described in \from the center line of the alley to the rear wall of the portion; and For that portion of the structure above the horizontal plane described in Subtitle G § 605.5, from the rear lot line to the rear wall of that portion immediately above the plane; and
4 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.