It is owned by Connecticut Landmarks, a historic preservation organization, and is open for regular tours between May and October.

The Buttolph–Williams House is a 2+1⁄2-story timber-frame structure, three bays wide and one deep, with a steeply pitched side-gable roof and a large central chimney.

The upper story hangs over the lower one by a few inches, built in a way that indicates it is a false overhang done for decorative rather than architectural reasons.

The house underwent a careful restoration in 1947, led by architect Frederick C. Palmer, in which much of its original material was preserved.

[5] The house plays a role in the Newbery Medal-winning book The Witch of Blackbird Pond, by Elizabeth George Speare.