Changes to energy requirements for rented properties  

From 1 April 2018, all rented property (both domestic and non-domestic) which is to have a new tenancy must have an EPC rating of at least “E”. This requirement also applies to all renewal tenancies to the same tenant for the same property on or after 1 April 2018. The duty is also triggered by any periodic tenancy arising on or after 1 April 2018 after expiry of any fixed term because the duty is not only triggered by a renewal but also “an extension”.
 
From 1 April 2020, all domestic lettings (including existing) must achieve an “E” rating or better. For more info https://www.landlordsguild.com/changes-to-epc-regulations-2013/