EPC's - When is a new one required

Campaigning and Policy

Hi,

I had another Landlord ask me for a number of an Energy Assessor recently. They had just had double glazing fitted at a property and wanted to update their EPC. They were under the impression you had to do this after you made a change to your property which affected the EPC rating of your property. Does anyone know if this is correct and if so please can they point me in the direction of the policy so I can have a read. As I have made many changes to my properties under various schemes and maintenance issues and I think I may well need to update my EPC's.

Many thanks