Here at Wychmoss I live in a self-built wooden house. An ‘eco-house’ I’m always asked? Yes, to a certain extent, but one that balances both environmental sustainability and financial sustainability! The aim is to always be debt-free as well as low impact. So self-sustaining where possible but low impact where complete environmental sensitivity is not affordable. The main house is a long house – in many ways it looks like a barn or farm building – as a simple rectangle is easier to build. The width is determined by timber lengths to avoid having to cut to size and waste off cuts. It is built of wood with two distinct walls, and outer wall and an inner wall which are not connected so avoid forming cold bridges. Instead they are filled with insulation and act as a passive house with a U rating of approximately 0.1 (except where I have insisted we have windows!).