Addington Palace is an 18th century mansion in Addington near Croydon, South London.
The original manor house called 'Addington Place' was built about the 16th century. The Addington estate was owned by the Leigh family until early 18th century. Sir John Leigh died without heirs in 1737 and his estates went to distant relatives, who eventually sold to Barlow Trecothick. Mr Trecothick had been raised in Boston, Massachusetts, and became a merchant there; he then moved to London still trading as a merchant, and later became Lord Mayor and then an MP. He bought the estate for £38,500 and then became Lord Mayor of the City of London in 1770.