The Mission Church is set on the side of a hill overlooking the Severn Valley, above a lane on the north side of Fron on the A483. It is late-Victorian Gothic in style and consists of nave and chancel, west bellcote, gabled entrance porch on the long south wall, and lean-to vestry on the north-east. It is faced with pinky-red brick with buff brick window dressings, terracotta dripstones and ashlar quoins and coping. The roof is slate. The western gable is lit by pair of narrow lancets with dripstones. There is a brick and ashlar cantilevered aedicule for the bellcote, similar to those at Leigh Delamere and at Roque Chapel in Merthyr Mawr.
The gabled south porch has a pointed wooden door with a recent electric lamp above. There are three single lancets in the southern nave wall with dripstones and leaded trellis glazing. The single bay chancel is set back and the ridge of its roof is slightly lower. There is a large window in the eastern wall of the chancel.
Inside, the roof is arch braced with cusped wind-braces. The pulpit uses sixteenth-century joinery.

Additional source:
R.Scourfield & R.Haslam, Buildings of Wales: Powys (2013), p.115.

D Leighton & O M Jenkins, RCAHMW, 24 July 2015