Once listed, severe restrictions are imposed on the modifications allowed to a building's structure or its fittings.
In England, the authority for listing under the Planning (Listed Buildings and Conservation Areas) Act 1990[2] rests with Historic England, a non-departmental public body sponsored by the Department for Digital, Culture, Media and Sport; local authorities have a responsibility to regulate and enforce the planning regulations.
[4] The largest centres of population are the coastal towns of Minehead and Watchet.
[7] Dunster has the greatest concentration of Grade I listed buildings, including Dunster Castle, which was built in 1617 on a site which had supported a castle for the previous 600 years;[8] the Yarn Market, which was built in 1609;[9] Gallox Bridge, which dates from the 15th century[10] and the Priory Church of St George which is predominantly from the 15th century but includes part of the earlier church on the same site.
[11] Other sites include manor houses such as the medieval buildings at Nettlecombe Court[12] and Orchard Wyndham.