National Heritage List for England

You can search the National Heritage List for England (NHLE) for all listed buildings, scheduled monuments, protected wrecks and registered parks, gardens and battlefields. The Heritage List on the Historic England site is the only official and up to date database of all nationally protected historic buildings and sites in England. A search on ‘Wivenhoe’ (see below) itemises 74 Listed Buildings.

https://www.historicengland.org.uk/listing/the-list/results?q=Wivenhoe&searchtype=nhle