Letter Re: Advice on Underground Retreat Construction

Sir:
I have 40+ acres, all wooded. I want to build a shelter. There are plenty of hills that I can dig in to, build the shelter and then cover it up. but I don’t know a thing about building a shelter. I need to know everything. From making it water tight to air venting. Where can I go. I do not want to buy a shelter. I want to build it my self. Thank you, – Buddy

JWR Replies: Building an underground house, a retreat, or just a simple below ground cache that doesn’t become an underground cistern is not a simple task. In general, I do not recommend underground construction for first time do-it-yourself home builders. The nation’s experts on underground residential construction is the firm Davis Caves. They been at it for nearly 30 years and they really have underground construction down to a science. To be done right, even in a dry climate, an underground house needs to be situated in a well-drained area. An unconnected (“freed standing”) small hill with southern exposure is ideal. Simply digging into an existing hill without creating a drainage system is an invitation to disaster, especially if you live where there is any significant precipitation. A proper underground house needs to have an extensive drainage system and excellent water barriers. If you are on a very tight budget and you definitely want to do it yourself, then I’d recommend that you look for an unpaid or low wage summer internship with a company like Davis Caves. Working with experts for a few weeks will teach you what you need to know to build an underground house that will be dry and tight and that will last for generations.