Cities in growth regions face major urban development challenges in meeting the demand for housing within the city. At the same time, capacity limits of urban technical infrastructures may arise and counteract the guiding principle of compact and thus land-saving inner development. The project therefore investigated the potentials for inner-city development using model cities as examples to examine to what extent these can meet the provision of living space quantitatively and qualitatively, and which synergies but also burdens through inner-city development can be identified with regard to urban infrastructures. For this purpose, water supply and wastewater disposal, waste management, transport (especially public transport) as well as local and district heating/cooling were considered.