Following the coming into force of The Energy Efficiency (Private Rented Property) (England and Wales) Regulations 2015 in 2016 and with the first trigger date for prohibition on letting sub-standard property looming (1^st April 2018), the Department for Business, Energy & Industrial Strategy (BEIS) have issued guidance for Non – Domestic Landlords.  If you are an EPC assessor or Low Carbon Consultant working, or planning to work, with landlord organisations to make sure they don’t have a problem with this new requirement you might find this guidance useful.
 
The document, can be downloaded here.