In the interdisciplinary research project, the individual work packages, such as the development of the qualitative profiles, the determination of indicators and attributes for the conversion and renovation variants or the ecological assessment, already make a contribution to sustainable inward development. Only by combining the different methods and by extrapolating the data – incorporated into intelligent, interactive visualizations – can a more holistic, clearer picture of the urban strategies of the environmentally and economically sustainable development of Vienna be drawn. Spatial planning and urban development intertwined with densification and sustainable development make it possible to recognize unused spatial and material potentials and to promote densification while preserving existing buildings. With the developed material intensity model, planners and real estate developers can generate development scenarios for construction projects beyond the „common practice“ (demolition and new construction) and, taking these into account, develop optimized concepts for land and material resources.