Coordinates: 51°30′24.02″N 0°8′30.39″W / 51.5066722°N 0.1417750°W
Wimbourne House (also known as Wimborne House or the William Kent House) is a large detached town house at 22 Arlington Street in St. James's, a district of the City of Westminster in central London. Designed in the Palladian style by William Kent, it was built between 1743-1754, being completed after the architect's death. It is a Grade II* listed building. The west front of Wimbourne House overlooks Green Park.
Henry Pelham, Prime Minister between 1743–54, hired William Kent to design the house located at 22 Arlington Street in two phases. The original construction began simultaneously with his elevation as prime minister and continued even after the 1748 death of the architect Kent. When Kent died, the work was completed by Stephen Wright. In the 18th century, Arlington Street, was not only fashionable, but was known as the 'ministerial street'. Pelham's neighbours included Robert Walpole at No. 5, Lord Tyrconnel, the Duchess of Norfolk and his enemy Lord Carteret, later Earl Granville. The decoration and construction of the house was completed in early 1754, but Pelham died suddenly on 6 March, 1754