D.C. Mun. Regs. tit. 11-I, § 527
527
527.1 A front setback shall not be required for a building in the D-4 zone except as otherwise regulated by the following regulations for a designated street:
(a) Subtitle I § 616.7 if fronting on M Street, S.E.; and
(b) Subtitle I § 618.5(b) if fronting on Independence Avenue, S.W.
SOURCE: Final Rulemaking published at 63 DCR 2447, 3041 (March 4, 2016 – Part 2).