D.C. Mun. Regs. tit. 14, § 5314
5314.1 DCHA may require families who report zero income to complete a zero (0) income interview and certification not more frequently than every one hundred twenty (120) days.
5314.2 Families shall be required to complete an interim recertification of income at the time of a move from one assisted unit to another at any time other than the biennial recertification date.
5314.3 DCHA may conduct an interim recertification at any time in order to correct an error in a previous recertification or to investigate possible participant fraud.
SOURCE: Final Rulemaking published at 59 DCR 7890, 7896 (June 29, 2012).