Why you need a BER.
A Building Energy Rating (BER) certificate rates your homes energy performance on a scale between A and G. A rated home is the most energy efficient while G rated are the least energy efficient.
A BER Certificate is required when selling or renting a property. It must be included in all advertising, and it is therefore required before the property is placed on the market so that prospective buyers or tenants can see the Building Energy Rating.
A BER Certificate is valid for 10 years. The exception is if a material change is carried out to the property (for example an extension, change in layout, or change in heating system) in which case a new BER Certificate is required to reflect the change.