Ammerdown House in Kilmersdon, Somerset, England, was built in 1788. It has been designated as Grade I listed building. It was built as a country house with stables and an adjacent formal garden within landscaped parkland in emparked landscape by James Wyatt for Thomas Samuel Jolliffe. The house has been handed down through the Jolliffe family to William Jolliffe, a politician, who was made Baron Hylton in the mid-19th century; the house was enlarged in 1855 & 1877, with further alteration to the west front being undertaken in 1901, possibly by Sir Edwin Lutyens.