In 1750, following the death of his father, he inherited Hestercombe House in Somerset (originally the property of his mother's family),[1] where he designed and laid out the gardens.
[2] They are now listed Grade 1 on the English Heritage Register of Parks and Gardens of Special Historic Interest in England.
[3] In November 1758, during the Seven Years' War, he was commissioned as major of the 1st Somerset Militia, which was embodied for fulltime service in home defence on 3 July 1759.
He died at Hestercombe on 29 August 1791 and was buried in the Warre family tomb at St Mary's Church, Kingston.
They had no children and Hestercombe was left to his nephew, John Tyndale.There are paintings by Bampfylde in the collections of National Trust, The UK Government and Exeter University.