Display Energy Certificate (DEC) – change in requirements

A DEC will be required where the total useful floor area of the building exceeds 250m² which ‘is occupied in whole or part by public authorities and frequently visited by the public’. DECs last for 10 years when the floor area is over 250 metres squared and up to 1,000m².

Where the building has a total useful floor area of more than 1,000m², the DEC is valid for 12 months. The accompanying advisory report is valid for seven years.

We asked the BMA legal department for a view on whether they think practices would be covered. They have said that for the purposes of a GP practice the definition of a public building is likely to include surgery premises, as GP practices are in receipt of public funds and provide a public service to large numbers of people who visit regularly.

They have added that their opinion is that it would be for the occupier of the building, rather than the owner to arrange the DEC (the use of the building will usually be dictated by the occupier so it would make sense for them to arrange same if the above criteria is applicable to them).  However, the position might be different if NHS Propco owns the building, rather than a private landlord, in which case they will probably be responsible for obtaining and paying for the DEC.  The guidance does also state that where there is doubt over whether a DEC is needed, it is good practice to obtain one (Guide to Display Energy Certificates and Advisory reports for Public Buildings).  The DEC is purely based on the overall output of a building and not each single piece of equipment.

The assessment must be undertaken by an accredited energy assessor using the methodology approved by the Secretary of State.  To find details on assessors, check at: –

To view the Regulations please visit:

If you are members of the LMC Buying Group you may wish to look at their website

ASI Environmental can be contacted via telephone or email: 0800 161 3384 or .  All prices include a full Assessment, Lodging of Display Energy Certificates and Advisories.  To ensure you get the discounted price you will need to mention you are a member of the LMC Buying Group.

However, we are also aware that there are other local Chartered Engineers who offer this service so it may be worth shopping around or working with other local practices to obtain a discount.

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