The church comprises chancel, nave with N and S aisles and S porch, and W tower. There is some early 13thc. evidence in the chancel. The S aisle, porch and tower were added in the 15thc. The N aisle and vestry were added when the church was restored in 1889-90 by S. Hooper of Hatherleigh. The fabric of the church is mainly granite blocks, the S vestry and S aisle are mixed granite and shale. The plain font is the only 12thc. feature.

Lydford appears twice in the Domesday Book. The first record states that Wado of Broadnymett held land here before the Conquest. By 1086 Roger was Lord and Ralph of Pomeroy was tenant-in-chief (34, 3.). The second record has King Edward as Lord before the Conquest and King William as Lord and tenant-in-chief in 1086 (1, 2.).