In Europe, 90% of today’s buildings will still be in use in 2050. 75% of those buildings are not energy-efficient, and 80 million Europeans are living in damp and unhealthy homes. Society is in need of energy-efficient buildings that provide both a healthy indoor climate and produce a minimal impact on the environment. A transition is needed. If Europe’s buildings are to be fit for 2050, then we need to triple the renovation rate. This would lead to a major reduction in energy use and health costs while boosting economic growth and job creation.