According to oral history, in 1051, the Count of Biscay granted the bishop of Álava ownership over the monastery of the local parish,[1] along with its land holdings which now encompass the church, including a nearby manor house that belongs to the church.

[2] The church was rebuilt to be larger at the beginning of the 16th century, in a Basque Gothic style.

[4] In 1852, Manuel Antonio de Luzarraga visited his hometown of Mundaka from his residence in Ecuador, and donated a bronze bell to the church.

English (translation): "This altar was and its new presbytery erected at the expense of Don Manuel Antonio de Luzárraga."

The church is a stone building in the late Gothic style, with a single nave.