This brochure deals with the critical attitude of builders towards the passive house. The aim is to address the arguments to analyze them and to comprehend them technical. The scientifically designed brochure provides detailed information on the arguments and is suitable for civil engineering education, as well as for general knowledge. This project part was substantially prepared by five institutes and coordinated by TIS-Techno Innovation South Tyrol. In the conviction that prejudice to the future-oriented building standards can be degraded with this base material we from the coordination office thank all involved project partners for the sound processing.