It was known to be the widest of the mission churches, it is the only mission designed with a three aisle entrance to the altar. The style is grand, through the front is plain except for three aches and a single square window. Open -arched walls separate the side aisles from the main aisle. The mission is made of adobe brick, tile roof, and a title floor.
Walls are three feet thick with cement support.
The original church did not have a bell tower, bells hung from a wooded crossbar in the courtyard. In 1867, a New England style steeple was added but destroyed in 1915. In 1976 a campanario was erected in the style of the other missions. Originally nine bells hung outside the church, most have been lost and presently only three bells still exist. The Mission grounds consist of 36 acres of pear and apple orchards and many herds of animals making this a rich mission.