For air there was a hole left on the top. When it was good weather the Chumash cooked outside.When it rained there was a fire pit in the center of the room. To keep rain out of there house they used a thatched roof to cover.
How the Chumash Built There Homes
There houses were called an ap. The Chumash house was made of setting willow poles who were in the ground in a circle and the poles were bent to form a dome and smaller branches were tied on.