If there is a violation by the tenant of § 55.1-1227 or the rental agreement materially affecting health and safety that can be remedied by repair, replacement of a damaged item, or cleaning, the landlord shall send a written notice to the tenant specifying the breach and stating that the landlord will enter the dwelling unit and perform the work in a workmanlike manner and submit an itemized bill for the actual and reasonable cost for such work to the tenant, which shall be due as rent on the next rent due date or, if the rental agreement has terminated, for immediate payment. In case of emergency the landlord may, as promptly as conditions require, enter the dwelling unit, perform the work in a workmanlike manner, and submit an itemized bill for the actual and reasonable cost for such work to the tenant, which shall be due as rent on the next rent due date or, if the rental agreement has terminated, for immediate payment. The landlord may perform the repair, replacement, or cleaning or may engage a third party to do so.