Do I Need a DEC?

Under the legislation it is the responsibility of every occupier of a building affected by these regulations to display a DEC in a prominent place clearly visible to the public. This obligation was introduced by law and is enforced by Trading Standards.
A Display Energy Certificate shows the energy performance of a building based on actual energy consumption as recorded annually over periods up to the last 3 years. DECs need to be updated each year.

Only buildings occupied or part occupied either by a public authority or an institution, that provides a public service, and expect to be visited by the public to a large number of persons and who are therefore frequently visited by those persons, and with a total useful floor area greater than 1,000m2 are affected by this legislation.

Where a building is partly occupied by a public authority or a relevant institution, the authority or institution is responsible for displaying a DEC and having a valid Advisory Report. Other private organisations occupying the building, irrespective of the size they occupy, do not need to display a DEC.