Joined to the neighboring palace by means of a passageway, it is a rectangular-shaped building, the main façade of which is located on one of the long sides, facing the Camino de Santiago.

This façade is configured on the basis of an axis (framed by two pilasters), displaced to the left, which in the lower part is presided over by the access door, lintelled and surrounded by ashlars, on which there is an oculus in the shape of semicircle, finishing all this with a simple belfry with a single hole, smooth pediment and pinnacles.

The interior has a single nave, with a high choir at the foot and a straight head.