D.C. Mun. Regs. tit. 14, § 305
305.1 Following a judicial determination that the owner has breached the implied warranty of habitability applying to the premises (under § 301 of this chapter), or following a judicial determination that a lease or rental agreement is void, the owner shall obtain a certificate from the Director that the habitation is in compliance with this subtitle prior to the next reletting of the habitation.
SOURCE: The Housing Regulations of the District of Columbia, 5G DCRR § 2911, Commissioners' Order 55-1503 (August 11, 1955).