Buckingham Palace forms the architectural core of the palace was built for the first Duke of Buckingham and Normanby in 1703 to the design of William Winde. The style chosen was of a large, three-floored central block with two smaller flanking service wings. Buckingham House was eventually sold by Buckingham's natural son, Sir Charles Sheffield, in 1761 to George III for £21,000. Sheffield's leasehold on the mulberry garden site, the freehold of which was still owned by the royal family, was due to expire in 1774. Under the new Crown ownership, the building was originally intended as a private retreat for King
John Nash (architect) Carmarthen, to where his mother had retired, her family being from the area. In 1785 he and a local man Samuel Simon Saxon re-roofed the town's church for 600 Guineas. Nash and Saxon seem to have worked as building contractors and suppliers of building materials. Nash's London buildings had been standard Georgian terrace houses, and it was in Wales that he matured as an architect. His first major work in the area was the first of three prisons he would design, Carmarthen 1789–92, this prison was planned by the penal reformer John Howard and Nash developed this into the finished