Free ebook on Scribd: How to Build Your Own Underground Home, 2nd edition, 212 pages, by Ray G. Scott. He’s authored three previous books about underground houses. Scott explains how you can cut your heating cost 75% in an underground home. He cut his heating bill 100% by installing a wood stove and cutting his own wood.
This book has lots of good advice if you’re interested in building underground. But the home is not built with sustainable materials. It’s virtually all concrete and steel. But much of the advice would hold true if you used materials such as earthbags. Instead of going totally underground, my preference is to build on high ground with earth berming. This approach avoids moisture problems, reduces costs and speeds construction, while still getting most of the earth moderating benefits of underground homes. In mild climates earth berming isn’t necessary. So use climate appropriate design methods.