The first historical references to the church of Sant Estèue de Betren date from the 14th century, at the beginning of the Gothic period, as is shown by the co-existence of Romanesque and Gothic styles in the architectural and sculptural configuration of the church. The absidal space and the facade of de Sant Estèue are the two areas which best evince this transition from Romanesque to Gothic. The head of the church is based on three polygonal apses, the central one having five faces and the side ones having three. This is where the respective windows are located and semicircular arches alternate with Gothic arches. Above the central apse there is a patently Gothic window flanked, in contrast, by two Romanesque loophole windows.

The access facade, one of the church's artistic reference points, opens in the north wall and originally constituted a new conception in facades. Stylistically, this marks a break from the narrative and naturalist language of Gothic style and culture, so much so that in the facade's decreasing arches we can "read" the biblical episode of the Final Judgement with the representation of the condemned counter-posed to the chosen. The Virgin Mary, with the Child Jesus in her lap, overlooks the scene from above.

At the top of the west wall there is a two-floor belfry; the inside of the church still houses a font of holy water, probably dating from around the 16th and 17th centuries, which is supported by a Romanesque column.