D.C. Mun. Regs. tit. 11, § 701
701.1 The following service establishments shall be permitted in a C-1 District as a matter of right:
701.2 Any use permitted in any R-5 District under §§ 350.4 and 350.5 or in the SP District under § 501, except a community-based residential facility for seven (7) or more persons not including resident supervisors or staff and their families, shall be permitted in a C-1 District as a matter of
right.
701.3 A youth residential care home, community residence facility, or health care facility for seven (7) to eight (8) persons, not including resident supervisors or staff and their families, shall be permitted in a C-1 District as a matter of right; provided, that there shall be no property containing an existing community-based residential facility for seven (7) or more persons either in the same square or within a radius of five hundred feet (500 ft.) from any portion of the subject property.
701.4 The following retail establishments shall be permitted in a C-1 District as a matter of right:
(w) Restaurant, but not including a fast food establishment, or a food delivery service. A fast food establishment with no drive-through shall be permitted in Square 5912 as a matter of right.
(x) Sporting goods store;
(y) Stationery store;
(z) Tobacco products store; and
(aa) Variety store.
701.5 Other service or retail use similar to that provided for in §§ 701.1 and 701.4, including assemblage and repair clearly incidental to the conduct of a permitted service or retail establishment on the premises, shall be permitted in a C-1 District as a matter of right.
701.6 The following uses shall also be permitted in a C-1 District as a matter of right:
(a) Chancery;
(b) College, university, or other academic institution of higher learning;
(c) Fire Department Support Facility;
(d) Hotel or inn;
(e) Library; (other than public library);
(f) Office, except new chancery and international organization;
(g) Optical Transmission Node;
(h) Parking lot, parking garage, or public storage garage, subject to the provisions of chapter 23 of this title;
(i) Rooming or boarding house; provided:
(1) No sign is displayed on the premises;
(2) No advertisement is displayed or published on or off the premises holding out the establishment to be a hotel, motel, inn, hostel, bed and breakfast, private club, tourist home, guest house, or other transient accommodation;
(3) Cooking facilities are not provided in any individual unit; and
(4) In a rooming house, no central dining or food preparation area is provided for guests.
(j) Telephone exchange, electric substation using non-rotating equipment, and natural gas regulator station.
SOURCE: § 5101.3 of the Zoning Regulations, effective May 12, 1958; as amended by: Final Rulemaking published at 27 DCR 2066, 2071 (May 16, 1980); Final Rulemaking published at 28 DCR 3482, 3504 (August 7, 1981); Final Rulemaking published at 30 DCR 3270, 3274 (July 1, 1983); Final Rulemaking published at 32 DCR 4374, 4375 (July 26, 1985); Final Rulemaking published at 36 DCR 1509, 1571 (February 24, 1989); Final Rulemaking published at 36 DCR 7625, 7626 (November 3, 1989); Final Rulemaking published at 40 DCR 726 (January 22, 1993); Final Rulemaking published at 40 DCR 3744 (June 11, 1993); Final Rulemaking published at 47 DCR 9741-43 (December 8, 2000), incorporating by reference the text of Proposed Rulemaking published at 47 DCR 8335, 8389-90 (October 20, 2000); Final Rulemaking published at 49 DCR 8891, 8894 (September 27, 2002); as amended by Final Rulemaking published at 50 DCR 8818 (October 17, 2003); as amended by Final Rulemaking published at 50 DCR 10822 (December 19, 2003); as amended by Final Rulemaking published at 52 DCR 8155 (October 14, 2005); as amended by Final Rulemaking published at 54 DCR 9393 (September 28, 2007); as amended by Final Rulemaking published at 55 DCR 34 (January 4, 2008); as amended by Final Rulemaking published at 55 DCR 4377 (April 18, 2008).