A listed building is a building of special architectural or historic interest that is considered important enough to protect.
Most people will be familiar with listed houses and churches, but a great variety of other buildings and structures can be protected through listing, including barns, milestones, bridges and railway stations.
If you want to carry out work on a listed building in a way that affects its character, you must first apply for listed building consent. You may also need separate planning permission and building regulations approval.
It is a criminal offence to alter, extend or demolish a listed building without consent, and the penalties can be heavy.
For more information, download our guide to listed buildings.