The Mission Church in Marsh is a tin tabernacle with lancet windows in corrugated metal walls. The roof is also corrugated and, over the apsidal eastern end, is hipped. The western gable has no windows. Above the western gable is a bellcote with a saddleback roof. The front long wall has a corrugated gabled porch with two wooden-boarded doors. The south nave wall has two lancets. A transeptal lean-to projection with one lancet projects from the southern end of the long wall. There are lancet windows in the apsidal eastern end. In 2003 it was still in use as a church.

O M Jenkins, RCAHMW, 17 May 2004.