Seaton Delaval Hall is one of the most important Baroque houses and landscapes in Britain, originally designed by Sir John Vanbrugh c.1720. Simpson & Brown were appointed by the National Trust to write a comprehensive CMP for the hall, collections and wider estate.
Much of the estate is a registered historic park and garden at Grade II*, with a total of 31 buildings. The hall and the Norman church are both listed at Grade I, with many of the ancillary buildings, landscape features and other structures listed at Grade II*. These include the obelisk and bastioned inner gardens. Interestingly, there is a considerable contrast at Seaton Delaval between the outstanding cultural-heritage significance of the architecture and, with a few notable exceptions, the generally moderate significance of the collections.