D.C. Mun. Regs. tit. 11-A, § 404
404.1 In addition to any controls established in this title, any building or structure within the boundaries of the Pennsylvania Avenue Sub-Area delineated in Subtitle I shall be subject to the Pennsylvania Plan [Pennsylvania Avenue Development Corporation (PADC) Plan, October 1974, as amended.]
SOURCE: Final Rulemaking published at 63 DCR 2447, 2623 (March 4, 2016 – Part 2).