Listed building consent is a type of planning control, which protects buildings of special architectural or historical interest. These controls are in addition to any planning regulations which would normally apply. Listed building status can also result in the requirement for planning permission where it wouldn't ordinarily be required - for example, the erection of means of enclosure.
The controls apply to any works for the demolition of a listed building, or for its alteration or extension, which is likely to affect its character as a building of special architectural or historical interest.
It is a criminal offence to carry out work which needs listed building consent without obtaining it beforehand.