The church has a W tower, aisled and clerestoreyed nave and chancel. The tower has three storeys and a battlemented parapet with diagonal buttresses and windows pointing to a 15thc. date. The nave arcades, of three bays, date from c.1300 and the clerestorey from the 14thc. The nave has N and S doorways, the S under a porch. The chancel windows point to an early 14thc. date. Construction is of rubble and coursed limestone with banding in the chancel. Nothing of the fabric predates the 13thc., but there is a 12thc. font, described below.

Chacombe was held by Godfrey from the Bishop of Lincoln in 1086. No church was recorded at that time. A priory of Augustinian canons was founded at Chacombe c.1185, but neither its exact site nor its relation, if any, to the present church has been satisfactorily clarified. The church is now part of the benefice of Middleton Cheney with Chacombe.

Fonts decorated wirh intersecting arcading are common in Northamptonshire, although many are more elaborate than this. The fonts at Gayton and Grafton Regis are similar to Chacombe's. The RCHME volume in the bibliography records archaeological sites only, and not the church, but might be found interesting.