If you want to alter or extend a listed building in a way that affects its character as a building of special interest, you must first obtain Listed Building Consent from your local planning authority.
Altering listed buildings
Written consent must always be obtained before any work on a scheduled monument can begin. Some development may also need planning permission, which will need to be obtained from the Local Planning Authority.
Making changes to scheduled monuments
Parks & Gardens
Where substantial changes are proposed to a registered park or garden, planning permission is likely to be required from the local planning authority, or in some cases from the Secretary of State.
Making changes to registered parks and gardens