The Gothic Revival structure was constructed of random fieldstone ashlars, capped with sandstone; the roof was slate over an open timber arched frame.

An odd detail was a set of dormers in the main west side roof, each with a lancet window; other windows also generally were of the lancet form, including a triple set at either end of the building.

Hall was hired to design an addition, which consisted of the low ambulatory on the west side of the building.

[2] At the same time, the Providence firm of Cattanach & Cliff was hired to redecorate the interior.

This small building extended from the rear of the church to School Street.