Expectations of the built environment are constantly rising, while resources and space are becoming increasingly scarce. This calls for a social and ecological transition. The NRP 81 “Baukultur” aims, through interdisciplinary and transdisciplinary collaboration, to transform the built environment in a way that ensures a high quality of life for future generations. The 13 projects of the NRP 81 show a wide variety of approaches to the research topic of “Baukultur”.