The urban passive house which we want to examine in this research seminar is not an isolated building any more but one that is closely interconnected with its urban contexts and embedded in its city quarter. The urban passive house is in a cultural, social, and ecological exchange with its surroundings. Accordingly, the investigations of this research seminar are epistemically located in the transition area between architecture and urban planning. The main focus is on the question of how a specific building X is climatically influenced by adjoining houses, streets, park areas, etc., but also by social norms, political regulations and individual behavior. The urban passive house is conceived as part of a political ecology of the city in which natural and social impact factors are closely interconnected with each other. Contrary to a todays passive house research, which entirely ignores society in its analyses and only considers it again at the very end, in the form of new standards, the seminar aims at those “risky entanglements” (Bruno Latour) between nature and society which characterize passive forms of climatisation in cities worldwide.