I live in St Joseph, MO. but the house is going to be built in Prairie Village, KS., which is part of the greater Kansas City area by a builder from Manhattan, KS., whom I am doing some side work for. He uses CA exclusively and this is my first experience with it. It is common on newer house in this area for past 20 years or so to put storm shelters under the front porch and have a suspended slab above.