Is the world better off with your building? In 99.9% of cases the answer is “No”. Almost every building pollutes the air, water, and soil and damages biodiversity. What if we turned that around and focused on making a positive contribution? If buildings purify, create biodiversity, and generate more energy than we use, then we can perhaps heal the world with our buildings. ‘Building with a Positive Footprint’ offers an accessible explanation for the construction industry on how to build in a radically sustainable way and outlines why this is not yet happening.