 The interior retains many original 17th and 18th-century features.The oldest portion of the house, the rear ell, was estimated by architectural historian J. Frederick Kelly to date to 1690, and was probably built by Joseph Pitkin.The main house was built in 1764 by his son Elisha, at which time roughly half of the old structure was demolished, its chimney was incorporated into the new building, and the remaining portion was used as a kitchen ell.