Nice couple. Good video that explains how they built their 20’x30’ (600 sq. ft.) home with cash without debt by recycling and repurposing almost all materials. The $30,000 cost included a septic tank and well. They combined cob, strawbale and light straw/clay, and kept the design as simple as possible. All of the plumbing is in one short interior wall between the kitchen and bath. They have a simple shed roof, etc. The homeowners say their choice “was the best thing they ever did”. Now they have no bills.