The Connecticut Governor’s Residence has served as the official residence since 1945. The house was originally built in 1909 for George C.F. Williams, a Hartford physician and industrialist. It was designed in the Georgian Revival style by the Boston-based architectural firm of Andrews, Jacques & Rantoul and built at a cost of $337,000. In 1916, Hartford architects Smith & Bassett designed the north and south wing additions. The three-story home originally stood on 14 acres (5.7 ha) 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.
Today, the 19-room residence sits on 4 acres (1.6 ha) and has 15,000 square feet (1,400 m2) of living space with nine fireplaces, nine bathrooms, a pool and a pergola.