The church consists of a 13thc chancel, late 13thc S aisle, a N aisle of 1755, and a W tower of 1725. The chancel arch appears to date from the 12thc and is extremely wide and flat, as if it has been reset. The S door has 12thc jambs and a Perpendicular head, one of the most bizarre combinations in the county.

At the time of Domesday Survey, Kington St Michael belonged to Ralph of Mortimer and the estate was held by Roger. There was a mill, 4 acres of meadow and 6 acres of woodland. Kington was worth 20s pre-Conquest, when it was held by Alwine, reaching the value of 30s at the time of Domesday Book.

The church was heavily restored in 1857-8 by J H Hakewill. The two responds of the chancel arch appear to have been rebuilt in the 19thc. It may thus be possible that the chancel arch was to a large extent a product of a reconstruction. The width and flattened profile of the arch suggest re-assemblage, and the relative sharpness of the carving may indicate it was created in the 19thc.