stucco fire resistant but thin, wood frame inside stucco, stucco is over a wire mesh, house eaves are still wood, so fire can go up wall, bestfire resistance is stone with steel or copper roofing but super expensive, brick second best, problem is california also has earthquake so building must flex or be super strong, rebar is required in all masonry so it's expensive to build cinderblock even though it's super fire resistant
United States