If, prior to the transfer by the Rent Administrator of a tenant petition to the Office of Administrative Hearings, the Rent Administrator determines that the issues raised in the petition may affect other tenants or all tenants in the housing accommodation, the Rent Administrator may provide written notice and advise the Office of Administrative Hearings of the possible grounds for the Office of Administrative Hearings to expand the scope of the proceeding to include all affected tenants in accordance with 1 DCMR § 2929.
D.C. Mun. Regs. tit. 14, r. 14-3908