This document discusses rethinking housing to improve sustainability, quality, and affordability. It proposes building homes to Passivhaus energy standards to reduce heating costs to £50 per year. Homes would be of high design quality through a rigorous construction process. The goal is to make high-quality, sustainable housing affordable for ordinary people through strategies like rethinking house and site design and the construction process. The vision is for entire communities built to these standards to transform UK housing.