These quarters were built along the perimeter walls of the mission, likely to facilitate defense and observation. Each quarter was typically a small, one-room structure with a kitchen, reflecting the simple living conditions of the time.

To assure the safety of 350 inhabitants, the mission plaza was encompassed by four stone walls, each having a gateway. From watchtowers all sides and entrances were visible. Indian quarters, constructed from limestone, each consisted of one room and a kitchen and, by 1768, were located mainly along the walls.