Built in 1835 as a multi-denominational church, it is a distinctive local example of late Federal architecture with Greek and Gothic Revival features.

[1] The former Union Church building is located in the dispersed rural village of Durham, on the north side of Royalsborough Road (Maine State Route 136), about 0.2 miles (0.32 km) west of its junction with Maine State Route 9.

It is a single-story wood-frame structure, with a gabled roof, clapboard siding, and a granite foundation.

A gabled vestibule projects from the front, with a hip-roofed porch sheltering the main entrance, which is now at the center of that section.

A two-stage tower rises, straddling the main roof and that of the vestibule, with an open belfry (housing a Revere bell) and an octagonal cupola above.