The project, initiated by the Bund für Umwelt und NaturschutThe BUND Yearbook Ecological Building & Renovation, published by BUND Deutschland (BUND), helps by making owners fit for discussions with the house bank, architect, energy consultant and craftsmen. The guidebook, which will be available from November, shows what can be done and how: Based on numerous house portraits, the annual compendium helps the reader to find out which measures, building materials and technologies are best suited to their own project.