24 CFR § 982.643 - Homeownership option: Downpayment assistance grants.
(2) The downpayment assistance grant must be applied toward the downpayment required in connection with the purchase of the home and/or reasonable and customary closing costs in connection with the purchase of the home.
(3) If the PHA permits the downpayment grant to be applied to closing costs, the PHA must define what fees and charges constitute reasonable and customary closing costs. However, if the purchase of a home is financed with FHA mortgage insurance, such financing is subject to FHA mortgage insurance requirements, including any requirements concerning closing costs (see § 982.632(b) of this part regarding the applicability of FHA requirements to voucher homeownership assistance and § 203.27 of this title regarding allowable fees, charges and discounts for FHA-insured mortgages).
(e)Return to tenant-based assistance. A family that has received a downpayment assistance grant may apply for and receive tenant-based rental assistance, in accordance with program requirements and PHA policies. However, the PHA may not commence tenant-based rental assistance for occupancy of the new unit so long as any member of the family owns any title or other interest in the home purchased with homeownership assistance. Further, eighteen months must have passed since the family's receipt of the downpayment assistance grant.