[3] It is set in 3,000 acres (1,200 ha) of parkland, landscaped by Lancelot "Capability" Brown,[4] with views over the gardens to the Chiltern Hills.
Kirtlington Park was constructed in the years 1742 to 1746, by William Smith of Warwick and John Sanderson, starting from plans by James Gibbs; the grounds were laid out by Lancelot Brown.
[13][12] Some parts of the house were left unfinished until the 1820s as his son Sir Henry Dashwood, 3rd Baronet gambled excessively with his cousin the sixth Duke of Marlborough.
[14] Kirtlington remained in the family until 1909, when Sir George John Egerton Dashwood, 6th baronet, sold the house to the 12th Earl of Leven and Melville.
A sixth polo ground was added by 2005. Notable athletes who began their careers at Kirtlington Park include Robert Thame, Henry Brett, and Malcolm Borwick.