The Connecticut Governor's Residence is located at 990 Prospect Avenue in Hartford. The property has served as the official residence since 1945. Originally built in 1909 for George C.F. Williams, a Hartford physician and industrialist, it was designed in the Georgian Revival style and built at a cost of $337,000.
The three-story home originally stood on 14 acres that included a grass tennis court, a greenhouse and a number of outbuildings. It remained in the Williams family until 1940. The property was acquired by the State of Connecticut in 1943. The 19-room residence sits on 4 acres and has 15,000 square feet of living space with nine fireplaces, nine bathrooms, a pool and a pergola.