OAH shall notify the parties of proceedings by first-class mail or by email.
For rent stabilization cases, OAH shall mail a copy of any tenant petition by first-
class mail or by email to any adverse party named in the tenant petition and to the housing provider listed on the registration statement for the housing accommodation.
For rent stabilization cases, a housing provider who files a petition shall provide for each tenant in the housing accommodation one copy of the petition and one envelope addressed to each tenant by name, address, and rental unit, with first class mail postage prepaid. The envelope shall bear OAH's return address unless the housing provider files a hardship petition or voluntary agreement. The envelopes for those petitions shall bear the return address of the Rent Administrator.
For rent stabilization cases, if a housing provider files a petition for a building with ten (10) or more rental units, the housing provider shall provide a hard copy and computer file of a service list containing the name, address, and rental unit for each tenant. The computer file shall be in Microsoft Word format, arranged so that the list may be printed onto labels measuring one inch by two and five-eighths (2 5/8) inches.
For conversion and sale cases involving a petition for declaratory relief against an owner, OAH shall mail a copy of any petition by first-class mail or by email to any adverse party named in the petition and, if needed, to the owner listed on the certification statement for conversion or on the offer of sale.
D.C. Mun. Regs. tit. 1, r. 1-2923