Michael Buck relied on pre-used, natural, reclaimed and mostly biodegradable materials, building his structure with earth, sand, clay, water and straw – a prehistoric method called Cob. He’s self-taught and drew up the plans himself. The floorboards came from a neighbor, the windows from an old van, the sheep wool used for insulation from a local farm, as did the cow dung. The straw was sourced from nearby fields and the clay from the building site in his garden itself.

via Tiny House Trend: The $250 Cob House | Designs & Ideas on Dornob.