The house was built by Nathaniel Treat, and was in the 20th century home to Charles J. Dunn, chief justice of the Maine Supreme Judicial Court.

[1] The Nathaniel Treat House is set on the east side of Main Street (United States Route 2), just north of its junction with Westwood Drive.

It is a 2+1⁄2-story brick structure, with a side-gable roof, four symmetrically placed end chimneys, and a five bay front facade.

The main entrance is centered, with a sheltering portico supported by fluted Doric columns and pilasters, whose interior has been glassed in.

Dunn served on the Maine Supreme Judicial Court from 1918 to 1939, the last four years as chief justice.