The listed building process started in 1947 as a response to the loss of buildings during the bombing in the Second World War. Marking a building as listed denotes it’s special architectural and historic interest so that it can be protected for future generations. The older a building is, and the fewer the surviving examples of its kind, the more likely it is to be listed.
Surprisingly, the total number of listed buildings is not known, as one single entry on the National Heritage List for England (NHLE) can sometimes cover several individual units, such as a row of terraced houses. However, we believe that there are around 500,000 listed buildings on the NHLE. About 45% of listed buildings are made up of churches and most of the listings were done between the 18th and 19th century.
Fig. 1: Age range of listed buildings in the UK
Fig. 2: Listed buildings in the UK
Fig. 3: Areas where building works break regulation