D.C. Mun. Regs. tit. 11-U, § 806
806.1 Uses that are permitted in the PDR zones are allowed on alley lots, subject to the satisfaction of all related conditions, and as further limited in Subtitle U § 806.2.
806.2 Residential uses shall not be permitted.
SOURCE: Final Rulemaking published at 63 DCR 2447, 3338 (March 4, 2016 – Part 2).