Within a European context, urban development at present faces several challenges. Two of them are the ongoing land consumption connected with urban sprawl and the several demographic changes which in the long run will have severe consequences for entire neighbourhoods and housing markets, not only in economically depressed regions. The poster will present the structure and first results of an international research project with the title “Mobilising Reurbanisation on Condition of Demographic Change” (Re Urban Mobil), which is funded under the 5th framework programme of the European Commission (Key action “City of tomorrow and cultural heritage”) until the end of 2005. In the frame of this project, reurbanisation is understood as a comprehensive and socially integrative strategy of inner-city development. The aims of the project are the development of strategies to improve the housing conditions and the quality of life in the core city, in particular its historical residential areas. While traditional approaches towards urban regeneration and renewal have been focussed on urban growth, present and future policies have to take into account the manifold demographic changes in many European countries. The complexity of the topic requires an interdisciplinary approach and contributions from both researchers and practitioners alike. The consortium of the project consists of four European municipalities (Leipzig, Ljubljana, Bologna, León) and eight scientific institutions, representing different disciplines (architecture and planning, urban sociology and demography, urban ecology, economics and law). In order to guarantee the immediate practical use of the research results, as project leader acts the City of Leipzig, Department of Urban Regeneration and Residential Development. The scientific proposal was worked out lead-managed by the UFZ Centre for Environmental Research Leipzig-Halle. Methodologically, the project is based on multi-disciplinary and cross-national case studies. The poster will present preliminary empirical research results, based on questionnaire surveys in the four involved cities. It will demonstrate the expectations of the local population in the process of reurbanisation as well as a summary of actual neighbourhood changes. The results will be combined with outcomes of the urban planning and the urban ecological analyses.