D.C. Mun. Regs. tit. 22-C, § 1900
1900.1 The Board shall receive, at any time during the license period, complaints from any person, or an affected ANC, alleging a violation by a licensee of the terms of its license or an unlicensed person.
1900.2 Complaints shall be in writing and set forth enough information to allow the Board or its staff to investigate the matter.
1900.3 In addition to written complaints identifying the complainant, any person may make an anonymous complaint in writing to the Board or orally to any ABCA investigator.
1900.4 Anonymous complaints shall be investigated to the best of the Board's ability but may result in no action being taken if an anonymous complainant fails to provide the Board or the ABCA investigator with sufficient information.
1900.5 All written complaints under this section that identify the complainant by name and address shall be responded to by the Board or its staff within ninety (90) days of receipt of the complaint. The response shall advise the complainant of the action that the Board or its staff has taken on the matter or provide a copy of the establishment's investigative history.
1900.6 The Board shall maintain records documenting complaints received and the action taken in response to the complaint.
1900.7 In the case where a complainant has not received a timely response, the complainant may petition the Board to release a copy of the target licensee's investigative history for review.
SOURCE: Final Rulemaking published at 73 DCR 002136 (February 20, 2026).