Millions have spare rooms as Europe's housing crisis grows. Which countries lead?

Millions across Europe are living in homes with unused rooms as the housing crisis worsens, with one in three people in the EU facing under-occupied living situations. Countries like Germany and the Netherlands have particularly high rates of spare rooms. This situation highlights a critical need for policymakers to boost the availability of affordable, smaller housing options to address the growing demand and alleviate the housing shortage. The implications are significant, as this could lead to better housing policies that help both current and future generations.