There are over 600 'listed' buildings in the borough. The Secretary of State for Culture, Media and Sport is responsible for including buildings in the list according to their special architectural or historic interest.
English Heritage (external link) is responsible for expert advice on which buildings meet the criteria for listing and for administering the process.
Buildings can be listed for their individual importance or as part of a group and it is usually the whole of the building, together with all other structures within its boundary or 'curtilage', which is listed, not just its most important features. Here you will find details of the listed buildings (.pdf, 191Kb) in the borough.
Once a building has been listed, the owner has to obtain listed building consent from the council before carrying out any demolition, alteration or extension (see the section on Development Control). Even relatively minor alterations or 'improvements', such as fitting replacement doors and windows, or removing internal features such as fireplaces, will need consent. The department's Conservation Officer can tell you whether a particular building is listed or advise on repairs and alterations.
Play it safe - always check with the Environmental Services Department before making any changes to a listed building.
The Planning Portal (external link) also provides information on listed buildings and conservations areas.