The church and Grange Farm stand together alongside a ford (now too deep for use) over the Black Bourn immediately SE of Honington in N Suffolk. In fact the churches of Honington and Sapiston are only half a mile apart. The two parishes were combined in 1972, and two years later Sapiston church was made redundant. The village of Sapiston has migrated N from the ford (at the Black Death according to local tradition), to cluster along the Honington - Barningham road, leaving church and farm to guard the ford in isolation. All Saints is a flint and septaria church of nave, chancel and W tower. The nave has a 12thc. S doorway under a 14thc. porch, but the windows are all 13thc. or later. Inside there is no chancel arch. The roofs indicate a two-bay chancel, but the chancel step is set one bay further E. The chancel windows indicate a date ofc.1300-50, and the N and E walls of the chancel are rendered. The tower is of three storeys and unbuttressed at the W; its arch is tall without capitals, and its Y-tracery bell-openings are ofc.1300. The nave and chancel roofs are of red tile, but the church was previously thatched. There was a restoration in 1847. The S doorway is the only Romanesque feature.

The Domesday Survey reveals that Sapiston was divided into many small holdings in 1086 and before the Conquest. The largest was held by 11 free men owing soke and sake and commendation to St Edmundsbury abbey. This holding included two parts of a church with 6 acres of land, 1½ carucates of ploughland and 6 acres of meadow. Peter de Valognes held thirteen and a half acres of ploughland and an acre of meadow, and three free men held them from him. Sasselin held half a carucate here, which thegn Godmann had held before the Conquest, and Robert Blund held another 18 acres, formerly held by two free men of Edward the Confessor. Around 1185 the land was apparently held by a family taking its name from the village; Matilda, daughter of Anselm de Thurston married one Henry de Sapiston at that time. The advowson of the church was given to Ixworth Priory in 1272.

The church is now in the care of the Churches Conservation Trust.

The motif of cusping over an angle roll as seen in the seconnd and third orders of the doorway is an unusual one. Something similar is found at St Mary's, Wissington but this is in the far S of the county and may not be related. The doorway is plain but carefully laid out, and is tentatively dated here to the 1140s or '50s.