It is a two-story structure, built of native granite laid in alternating wide and narrow courses.

The front facade is five bays wide, with the main entrance at the center, set in a rounded-arch opening.

The interior follows a center hall plan, with relatively simple woodwork trimming the openings and the fireplaces.

[2] The house is locally significant as a rare example of a stone house, and as the home of William Jillson, a native of Cumberland, Rhode Island, who was one of the first people to purchase industrial water rights at the Willimantic Falls.

Jillson and his brothers established several mills in the area, which grew to become the American Thread Company, Willimantic's leading employer for many years.