What An Underground House Is

Perhaps we should start with what an underground house is not. An underground house is not dark, damp and dirty. It is not airless and gloomy. It is absolutely not a basement. An underground house has no more in common with a basement, Than a penthouse apartment has in common with a hot, dark, dusty attic. A basement is not designed for human habitat. It is a place to put the furnace and store junk. It is constructed to reach below the frost line so that the frost heaves don't crumple the...