Placed under the patronage of Saint-Lubin, bishop of Chartres in the 6th century, the church of Prudemanche has experienced many vicissitudes over the centuries. Ruined during the English invasions and then devastated by the Protestants, the current building is said to be the third construction, undertaken at the dawn of the 17th century. Its style, very simple, is even said to have been deliberate so as not to offend the austerity of a part of the population who remained Calvinist. Rectangular in plan, the nave is extended by a choir with a flat chevet of the same width.
To the northeast of the church, a sacristy has been added, accessible by a side door of the choir. The nave is pierced with semicircular bays probably coming from the original Romanesque building. The raftered nave frame supporting the truss is paneled. The walls are made up of a wooden frame with flint masonry infill mounted with lime mortar. The façades and the chevet are supported by powerful buttresses of grison. According to a drawing from 1852, the initial portal to the west had a double bay occupying the width of this arch. The roof is made of old flat tiles, while the bell tower with a quadrangular base is covered in slate.
The furniture consists of a single altar, a bench, a pulpit, a glory beam and two statues remaining from the old altarpiece of the 15th century. On the north side of the nave, wall paintings appear under the 19th century rendering.
For the consolidation of the masonry of the choir, the repair of the roof and the framework, the Sauvegarde de l’Art Français granted, in 1997, a grant of 15,000 F.