(a) The cost of meals or supportive services may not be included in the rent to owner, and the value of meals or supportive services may not be included in the calculation of reasonable rent.

(b) The lease may not require the tenant or family members to pay charges for meals or supportive services. Non-payment of such charges is not grounds for termination of tenancy.

(c) The owner may not charge the tenant extra amounts for items customarily included in rent in the locality, or provided at no additional cost to unsubsidized tenants in the premises.