D.C. Mun. Regs. tit. 14, § 5405
5405.1 Applicants and program participants shall identify the relationship of each household member to the Head of Household with the following types of documents:
(a) Marriage:
(1) Marriage Certificate;
(2) Marriage License;
(3) Proof of Common Law Marriage Recognition; or
(4) Official IRS Tax Records;
(b) Separation or Divorce:
(1) Certified Copy of Divorce Decree;
(2) Court Record documenting separation;
(3) Evidence of annulment; or
(4) If there is no court order, documentation from clergy, social service providers or other community members;
(c) To prove the absence of a Family member, the Family shall supply verification in accordance with § 5318.3 and § 5318.4;
(d) To prove that a Family has been abandoned by the Head of Household, a remaining household member must provide one of the following types of documents:
(1) Certification from a social service agency;
(2) Information from child support enforcement agency;
(3) Documentation of legal action against parent or guardian;
(4) Documentation that the Head of Household is incarcerated; or
(5) Other acceptable documentation as determined by DCHA on a case-by-case basis; or
(e) To prove the existence of a foster relationship, the Head of Household shall provide one (1) of the following forms of documentation:
(1) Verification from the state or local government agency responsible for the placement of the individual with the Family is required; or
(2) Written verification from a biological parent sufficient to show a Family or custodial relationship with the participant and the child or children.
SOURCE: Final Rulemaking published at 59 DCR 7916 (June 29, 2012).