Definition: Listed Building Enforcement Notices
"Where it appears to the local planning authority -
(a) that any works have been or are being executed to a listed building in their area; and
(b) that the works are such as to involve a contravention of section 9(1) or (2) [which in effect require listed building consent and compliance with conditions on any consent]
they may, if they consider it expedient to do so having regard to the effect of the works on the character of the building as one of special architectural or historic interest, issue a notice under this section (in this Act referred to as a 'listed building enforcement notice')"
A listed building enforcement notice shall specify the alleged contravention and require such steps as may specified in the notice to be taken -
(a) for restoring the building to its former state; or
(b) if the authority consider that such restoration would not be reasonably practicable or would be indesirable, for executing such further works specified in the notice as they consider necessary to alleviate the effect of the works which were carried out without listed building consent; or
(c) for bringing the building to the state in which would have been if the terms and conditions of any listed building consent which has been granted for the works had been complied with."