A listed building is a building or other structure of special architectural or historic interest included on a statutory list and assigned a grade (I, II* or II). Sites of exceptional historic interest are assessed as Grade I, those of great historic interest as Grade II* and those of special historic interest as Grade II. Listing includes the interior as well as the exterior of the building, and any buildings or permanent structures (e.g. wells within its curtilage). If your property is a listed building then you will need additional planning consents to carry out works to it. You can select to apply for listed building consents when making an application on the Planning Portal. English Heritage is responsible for designating buildings for listing in England.