The church is extremely simple in design. It is oblong in shape, 96 feet long and 26 feet wide internally. The windows are tall lancets. In the east gable there are four lancets equal in height, and similar openings appear in pairs between all the buttresses around the wall. The eastern end was partitioned off and set aside as the burial vault of the family of Ross of Balnagown. The chapels or aisles attached to the church were erected at later dates against the original walls.
