An aisled basilica
plan terminating in the east with a chevet plat.
The rib-vaulted nave
was originally a two-story elevation, however the windows have been subsequently blocked. The diagonals are supported by the diagonally-placed plinths
in conjunction with some on diagonal capitals and some on the square. Sculpture is elaborate and ornate with foliate and figurative forms.
The old early to mid 12th-century nave with a tower is much like that of Clermont-de-Cambronne
with the addition of a sixteenth-century choir.
Foulanges is among the buildings which were experimenting early in rib vaults. Like Bury
it combines forms considered characteristically "Norman" with forms (cornice type) from the Beauvaisis