Comment by roel_v

What bugs me about projects like this, is that they're being presented as 'sustainable' while they're the antithesis of that. If everybody would want to live like that, there wouldn't be enough room, let alone large, undisturbed areas for forests or agriculture; plus this house may have cost the builder only 5000 pounds (if you don't count the land), but that's only possible when it's a one-of-a-kind project. If you'd have to take into account the supply network needed to build a house like this, and live in it, to a reasonably comfortable standard (meaning, at the very least: warm, dry, no vermin inside, access to sewer and running water), it would become a lot more expensive, if not downright impossible.