Building biology must not stop at the gate. Houses and apartments usually exist as part of villages, towns, and cities, not by themselves. This has a significant impact on both nature and human well-being. Applying the basic rules of ecosocial regional planning makes it possible to create life-sustaining communities that live in harmony with their healthy natural surroundings. However, ignoring these rules may lead to an increase in mental and physical health disorders and, in the long run, cause environmental destruction to spiral out of control. So, what should urban planning look like from a building biology perspective?