D.C. Mun. Regs. tit. 11, § 722
722.1 A mechanical amusement machine shall be permitted in a C-2 District as an accessory use incidental to the uses permitted in §§ 721, 722, and 726 through 734, subject to provisions of § 2501.
722.2 A child development home or an expanded child development home shall be permitted in a C-2 District as an accessory building and use incidental to the uses permitted §§ 721, 722, and 726 through 734; provided:
(a) The dwelling unit in which the use is located shall be the principal residence of the caregiver; and
(b) The use otherwise shall meet the definition of a home occupation.
722.3 Other accessory uses customarily incidental and subordinate to the uses permitted in C-2 Districts shall be permitted in a C-2 District.
SOURCE: § 5102.6 of the Zoning Regulations, effective May 12, 1958; as amended by Final Rulemaking published at 29 DCR 4913, 4915 (November 5, 1982); as amended by Final Rulemaking published at 47 DCR 9741-43 (December 8, 2000), incorporating by reference the text of Proposed Rulemaking published at 47 DCR 8335, 8395 (October 20, 2000); as amended by Final Rulemaking published at 63 DCR 1632 (February 12, 2016).