Projects related to this research area aim to better take into account the economic, social and institutional environment within which the real estate projects evolve. The concept of real estate ecosystem, which differs from the concepts of industrial cluster and competitiveness clusters, is useful for understanding the evolution of interactions and interdependencies between different real estate actors in large cities and for measuring the impacts of their activities on social, cultural, heritage and economic development. It can be useful for private and public decision makers. In addition to questions about the foundations and evolution of the ecosystem concept, there are several questions about the value chain, business models and socio-economic impacts of these developments. Beyond the commercial and industrial sphere, the real estate ecosystem also refers to the analysis of changes in the quality of life conditions of urban citizens and the integration of social, political, economic, (Economic and social conditions of individuals, impact on housing quality, infrastructure quality, neighborhood vitality, the resilience of buildings and infrastructure, or, the increased vulnerability of populations facing the phenomenon of densification of cities, facing climatic risks and major risks, notably natural, industrial and pandemic disasters).