For Sales and Lettings
All EPC's, whether for Sales or Rental use, are now valid for 10 years unless a newer EPC is produced, in which case only the latest EPC is valid.
Once an EPC has been obtained, there is no legal requirement for a new EPC to be produced when works are carried out or if improvements/alterations are made to a property. A home owner can of course choose to renew the certificate at any time to ensure any major imrpovements in the energy efficiency rating of the house are truly reflected in the EPC.