… John Williams of the UK’s National Centre for Biorenewable Energy, Fuels and Materials. “This house will show how innovation in the UK construction industry can meet all these aims by using renewable materials. What’s more, we can grow the crops here. If just 1% of the UK’s agricultural land was used to grow hemp, it would be enough to build our entire target of 180,000 homes per year.” Thanks in part to its utilization of Hemcrete, The Renewable House meets Level 4 of The Code for Sustainable H …