D.C. Mun. Regs. tit. 14, § 3917
3917.1 The proponent of a rule or order shall have the burden of establishing each finding of fact essential to the rule or order by a preponderance of evidence, except claims or defenses for which the burden is shifted as provided by the Act, Chapters 41-44 of this title, or 1 DCMR Chapter 28 and 1 DCMR §§ 2920-2941.
3917.2 In show cause hearings, the burden of proof shall rest on the Rent Administrator.
SOURCE: Final Rulemaking published at 68 DCR 012634 (December 3, 2021).