(a) The amount determined by the Commissioner to be the maximum allowable rent shall include both an amount representing a rent which is reasonable in that municipality and a utility allowance.
(b) The amount of rental assistance for eligible rental units shall be the difference between the family contribution and the contract rent. The family contribution shall be the greater of ten percent (10%) of the family's gross monthly income or thirty percent (30%) of the family's adjusted monthly income less a utility allowance.
(c) The contract rent plus utility allowance for the unit shall not exceed the maximum allowable rent, as determined by the Commissioner. The contract rent may not be increased without the approval of the Commissioner.
(d) If a family living in a unit receiving rental assistance reaches an adjusted monthly income, 30% of which is equal to the contract rent plus a utility allowance for that unit, then that unit will no longer be considered an eligible rental unit. The next available unit shall be rented to a low income family, and the rental assistance provided under this program will be attached to the unit occupied by a low income family.
(e) When a unit which is tied to rental assistance is vacant, the rental assistance may be equal to the contract rent on a per diem basis for a period not to exceed sixty (60) days.
(f) Any developer or owner shall make every reasonable effort to maintain optimum occupancy levels in units receiving rental assistance.