D.C. Mun. Regs. tit. 22-C, § 9702
9702.1 A party shall have the right to call and examine witnesses.
9702.2 Except as provided in § 9702.3, at any proceeding before the Board in a contested case, the Board may hear as witnesses all persons residing within and outside the neighborhood who desire to be heard.
9702.3 The Board may exclude any irrelevant or unduly repetitious evidence or testimony.
SOURCE: Final Rulemaking published at 73 DCR 002136 (February 20, 2026).