A certificate issued by the local planning authority confirming that the use of premises is an “established use” and therefore not open to challenge.

Established use certificates are no longer granted. Since 27 July 1992, the equivalent is a certificate of lawfulness of existing use or development (CLEUD) .

Existing established use certificates are still valid and can be relied upon, so their existence is still relevant for the buyer. There is a procedure for converting an established use certificate into a CLEUD.