The first written reference to the Church of San Pedro in Zumaia dates from 1381. The Gothic style church has a single nave with four sections, polygonal chancel and two chapels next to the presbytery.
Though it has been suggested that some elements date back to XIII-century Cistercian architecture, most of today's building dates from the end of the XV and the beginning of the XVI centuries. This is the same period to which the fasciculated supports, decoration of capitels, vain next to the Choir, arcosolium funereal monument and portico all belong.
Work on vaulting the church started at the beginning of the XVI century thanks to its having sold some plots of land on which to build side chapels; the church obviously thought it could offset the expense of roofing and covering the presbytery with the proceeds from these sales. Around 1530, the choir was built and paid for by the Aguirre family. And, in 1574, Juan de Anchieta was commissioned to make the church's main altarpiece.
New windows were opened in the XVII century and the sacristy was rebuilt towards the end of the XIX century, which was also when the new Neo Gothic portico was built.