Any fee structure that would remove or limit affordable unit occupant access to any amenities or services that are required or included for market-rate unit occupants is prohibited. Application fees (including the charge for any credit check) shall not exceed 5% of the monthly rent of the applicable affordable unit and are payable to the administrative agent to be applied to the costs of administering the controls in this section as applicable to the unit. Fees for truly optional, unit-specific, non-communal items that are charged to market-rate tenants on an optional basis, such as pet fees for tenants with pets, storage spaces, bicycle-share programs, or one-time rentals of party or media rooms, may be charged to affordable tenants, if applicable. Pet fees may not exceed $30 per month and associated one-time payments for optional fees pertaining to pets, such as a pet cleaning fee, are prohibited. Fees for other optional, unit-specific, non-communal items may not exceed the amounts charged to market-rate tenants.