Construction was slow, beginning in the second decade of the thirteenth century with the lower chevet, with its characteristic water-holding profiles in the bases of the supports. The chevet clerestory, on the other hand, with its prismatic mouldings, belongs to the second part of the 13th century. Going from the chevet into the transept there is a sharp simplification in the forms of articulation and the triforium is not longer deployed. And the two-story elevation of the nave looks entirely stripped-down, as it it belongs to the economically-challenged fourteenth century.
Serious deformation in the crossing piers suggests that a crossing tower once existed. The present tower is a light-weight wooden steeple