By my realm of experience here in the burbs, new construction of single story ranches in middle class neighborhoods are very rare unless it's patio homes. A person almost has to get into older neighborhoods for moderate or smaller sized single story homes. I have neighbors in their 80's and 90's living independently in the smaller 50's ranches around my house and hire out yard chores plus maybe a little help from family or neighbors. I've actually watched for smaller ranches in new developments but have thought there must be some economic benefits about building multistoried larger homes. It seems like a missed market.