The research project “Mix: Possible!” seeks suitable concepts and incentives for specific spatial contexts on the topic of mixed use and flexible capacities in contemporary housing. The focus is on the socially, economically and ecologically sustainable interaction of working and living in densely built-up urban neighbourhoods by taking an integral look at the areas of construction and urban mobility against the background of social and societal transformation. The project aims to establish a better connection between the theory and practice of urban development, i.e. between conceptual demands for diversity of use and urban development implementation as well as appropriation in everyday life. Mix: Possible! therefore follows a participative approach and enables a knowledge transfer between the stakeholders (institutions, planners, developers, users) and learning processes with the aim to make innovation feasible. As a result, innovation scenarios and three impulse models for new open-use residential areas derived from them that can be implemented are worked out. The project is supported by the Austrian Climate and Energy Fund.