D.C. Mun. Regs. tit. 22-C, § 9705
9705.1 The parties to a show cause hearing shall be the following:
(a) The respondent, licensee, permittee, or applicant; and
(b) The District of Columbia.
9705.2 The parties to a protest hearing shall be the applicant and the protestants and their designated representatives, if any.
9705.3 The parties to a fact-finding hearing shall be the licensee, permittee, or applicant for a license, and such other persons whose appearance the Board deems necessary and who are designated by the Board as parties.
9705.4 The Board may, in its discretion, permit interested persons other than parties, as defined in this chapter, to intervene in a proceeding for such general or limited purpose as the Board may specify.
9705.5 A person permitted to intervene under this section shall comply with all conditions fixed by the Board and shall not be considered a party to the proceedings.
SOURCE: Final Rulemaking published at 73 DCR 002136 (February 20, 2026).