In order to legally advertise a lettings property, a valid Energy Performance Certificate must be included on all property advertising and shared with any prospective resident. An EPC confirms the energy performance of a property with ratings from A (most efficient) to G (least efficient) and is valid for 10 years. The government has proposed increasing minimum standards to an EPC of band C by 2025 for all new properties and landlords do have financial support packages available to them to assist with remediation where required.