204.1 The following uses shall be permitted in the R-Use Group D zone:

(a) Any use permitted as a matter of right in Subtitle U § 201; and

(b) An existing non-residential use with a valid certificate of occupancy shall be considered a conforming use and may expand by not more than ten percent (10%) of its gross floor area as a matter of right under the provisions of the R-1B/SH zone; provided, that the following requirements are met:

(1) No additional land area or subdivision of lots is involved in the expansion; and

(2) The ten percent (10%) expansion limit shall be a total limit on expansion based on the gross floor area of the building as of July 29, 1994.

SOURCE: Final Rulemaking published at 63 DCR 2447, 3338 (March 4, 2016 – Part 2); as amended by Final Rulemaking published at 70 DCR 011297 (August 25, 2023).