Frequently Asked Questions on DECs

Frequently Asked Questions on DECs

Here at Compliance365, we get asked various questions on DECs on a daily basis. We have taken the time to answer some of your FAQ,  read on to find out more.


What are DECs?

A Display Energy Certificate (DEC) shows the energy performance of a building, based on the operational rating, on a graphical scale from A (very efficient) to G (least efficient). A DEC must be accompanied by an Recommendation Report (RR) which outlines how an organisation can reduce their energy consumption.


When are DECs required?

A DEC will be required if:

  • The building is a frequently visited public building
  • The building is publicly funded
  • The building has a total floor area of over 250m²


How long is a DEC valid for?

The renewal timescale of a DEC depends on the usable floor area of the building:

  • If the property has a total usable floor area of between 250m² and 1000m², both the DEC and RR are valid for 10 years.
  • If the total usable floor area is over 1000m² the DEC is valid for 12 months and the RR for 7 years.


What happens if an organisation doesn’t have a valid DEC or RR?

If an organisation does not have a valid DEC, they may face a penalty of up to £500. If an organisation does not have a valid RR, they may face a penalty of up to £1000. The DEC must also be clearly visible to the public eye.


How can we help?

Compliance365 are happy to provide help and guidance on DEC legislation. Our assessors are fully accredited to produce DEC’s and RR’s and we can provide your organisation with a comprehensive DEC service, ensuring your property is compliant with the legislation.

Get in touch today for further information on DEC’s. You can contact us today by emailing or phoning 01924 669940.  You can also find further information on DECs on our website to, click here find out more