(a) Standards required The Secretary shall require that
(1) before any assistance may be provided to or on behalf of the person, each unit shall be inspected by the applicant directly or by another entity, including the local public housing agency, to determine that the unit meets the housing quality standards under section
1437f of this title and that the occupancy charge for the dwelling unit is reasonable; and
(2) the recipient shall make at least annual inspections of each unit during the contract term.
(b) Prohibition No assistance may be provided for a dwelling unit
(1) for which the occupancy charge is not reasonable, or
(2) which fails to meet the housing standards, unless the owner promptly corrects the deficiency and the recipient verifies the correction.