351.1 The following accessory uses or accessory buildings incidental to the uses listed in § 350 shall be permitted in an R-5 District:

1. (a) Any accessory use or accessory building permitted in R-4 Districts under § 331;
2. (b) Temporary exhibits, fundraising functions, and benefit sales for nonprofit organizations not to exceed ten (10) days in a hotel with more than one hundred (100) rooms or suites; and
3. (c) Any other accessory uses or accessory buildings customarily incidental to the uses permitted in R-5 Districts under this chapter, including mechanical amusement machines that are accessory to uses specified in § 350.4(d), subject to the provisions of § 2501.

351.2 Commercial adjuncts as accessory uses to a hotel containing one hundred (100) or more rooms or suites shall be permitted in an R-5 District; provided:

1. (a) The total area within the hotel devoted to function rooms, exhibit space, and commercial adjuncts shall not be increased;
2. (b) There shall be no direct entrance to the function rooms, exhibit space, and commercial adjuncts from the outside of the building;
3. (c) No part of the adjunct or the entrance to the adjunct shall be visible from a sidewalk; and
4. (d) No sign or display indicating the existence of the adjuncts shall be visible from the outside of the building.

SOURCE: § 3105.5 of the Zoning Regulations, effective May 12, 1958; as amended by Final Rulemaking published at 27 DCR 2066, 2068 (May 16, 1980); and 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, 8362 (October 20, 2000).