It was originally quartered in a room of the Andover Town Hall, until 1943, when its present building was purchased from a Universalist church organization.

[1] The main block of the building is a wood-frame structure resting on a granite foundation, with a hip roof clad in asphalt shingles.

Its front and rear facades are slightly elongated, giving the building a roughly rectangular shape.

It is clad in wooden clapboards, and has a single brick chimney rising at the rear of the building.

A gable-roof entry vestibule projects from the main block, with the door sheltered by a gabled portico supported by decorative brackets.