anticipated water, sewer, electrical, oil, or natural gas billings billed to the residential building owner from a third-party provider of the utility service. The owner, manager, or operator of the residential building may charge and collect from the tenant additional service charges, including monthly billing fees, account set-up fees, or account move-out fees, to cover the actual costs of administrative expenses and billings charged to the residential building owner, manager, or operator by a third-party provider of such services, provided that such charges are agreed to by the residential building owner and the tenant in the rental agreement or lease. The residential building owner may require the tenant to pay a late charge of up to $5 if the tenant fails to make payment when due, which shall not be less than 15 days following the date of mailing or delivery of the bill sent pursuant to this section. The late charge shall be deemed rent (i) as defined in § 55.1-1200 if a ratio utility billing system is used in a residential multifamily dwelling unit subject to this chapter or (ii) as defined in § 55.1-1300 if a ratio utility billing system is used in a manufactured home park subject to the Manufactured Home Lot Rental Act (§ 55.1-1300 et seq.).
E. Energy allocation equipment shall be tested periodically by the owner, manager, or operator of the residential building. Upon the request by a tenant, the owner shall test the energy allocation equipment without charge. The test conducted without charge to the tenant shall not be conducted more frequently than once in a 24-month period for the same tenant. The tenant or his designated representative may be present during the testing of the energy allocation equipment. A written report of the results of the test shall be