The ground floor is seven bays wide, articulated by a combination of iron and stone pilasters.

The pilasters support a granite lintel, above which the brick portion of the building rises.

Second and third floor windows are set in segmented-arch openings, with Italianate brick hoods and bracketed stone sills.

Designed by Bangor architect George W. Orff, the top floor was originally mansarded in the Second Empire style, with gabled dormers.

The Masonic facilities were gutted by a fire in early 1896, and the upper portion of the building was subsequently rebuilt to a design by Henry Dexter, a local builder.