D.C. Mun. Regs. tit. 11, r. 11-1200
The Capitol Interest (CAP) Overlay District is established 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.
The land use controls embodied in the Zoning Regulations for the land adjacent to the U.S. Capitol should reflect the importance of the area to the District of Columbia and the nation.
The CAP Overlay District, controlling land use as well as height and bulk, shall provide sufficient controls for the areas south of the U.S. Capitol and the historic residential district to the east of the U.S. Capitol.
The CAP Overlay District is intended to provide particular controls adjacent to properties having an obvious and well-recognized general public interest.
The CAP Overlay District shall further restrict some of the permitted uses allowed in the existing zone districts and applicable in the area to reduce the possibility of harming the site, district, or building to be protected.
The list of permitted uses contained in this chapter shall include only those uses that would have very limited external impacts.
The CAP Overlay District shall provide for more control of the height and bulk allowed in existing zone districts now applicable in the area.
The CAP Overlay District shall be mapped in combination with any zone district mapped at such location and shall not be in lieu of any district mapped at that location.
All uses, buildings, and structures permitted in accordance with the appropriate sections of this title for the district with which the mapped CAP Overlay District is combined shall be permitted in those combined districts, except as specifically modified by this chapter.
All restrictions and prohibitions provided with respect to either of the zone districts combined pursuant to this chapter shall also apply in the CAP Overlay District.
D.C. Mun. Regs. tit. 11, r. 11-1200