The church with gabled roof, and Doric like, engaged columns looked like a basic Greek temple with its classical pediment. The columns although Doric in design had a Roman touch as did the arches above both door and windows. The triple window and the rustication on the corners would probably qualify it as Italianate rather than Greek Revival. The exterior of the church was painted tan with dark brown trim. This color scheme was very Victorian as was the interior with its dark blue and gold metal ceiling, iron columns, extremely ornate lamps, dark fabrics, and heave carved wood communion table. The church was very gaudy by today's standards. In 1958 Ernest Sterling was hired by the church to redo the interior and put on a Sunday School addition. He changed the interior from Victorian to Colonial, removing the metal ceiling and replacing it with a plaster one encircled by dentil molding. The balcony was faced with paneling and the metal columns encased in wood. He also removed the ornate iron lamps and put in brass colonial sconces and chandelier. The interior was painted in light colors and the exterior white. In this present form the church is more in harmony with its 1796 timber framed which can still be partially viewed in the attic.

In 1992 the church built a two-level addition, dedicated as the Constance and Raymond Faxon Christian Education Center, which was nearly equal in size to the previous two church structures combined. This project was initiated by a major gift from Raymond Faxon, and completed by the congregation without a mortgage. The addition, designed by architect Kenneth Parry, includes a spacious and bright fellowship hall which can seat 200 people at tables, eight classrooms, and large lobbies. In August 1991, Hurricane Bob blew the roof and upper level of this addition down, while it was still in a raw state of construction. But it was quickly redesigned and rebuilt to withstand 110 mile per hour winds.

All in all, the Old First Church, including its two additions, still stands as an eloquent witness to the spirit of Congregationalism. Its slender and graceful spire points faithfully Heavenward, a delight to the eye and an inspiration to the soul.