Evaluation and Optimization on Urban Regeneration Sustainability from the Perspective of Multidimensional Welfare of Resettled Resident—Evidence from Resettlement Communities in Xi’an, China

Urban regeneration is an important means for building sustainable cities and implementing China’s high-quality development strategy. In this paper, a sustainable regeneration PSR (Pressure-State-Response) model was established, and a state-layer evaluation model was constructed based on the perspective of resettled residents’ multidimensional welfare. Through questionnaire surveys with 210 centralized resettled households in Xi’an, China, the changes in the living conditions of resettled residents before and after the centralized resettlement were measured, the differentiation in individual changes were explored, and the sustainability of urban regeneration was evaluated, so as to optimize the sustainability of urban regeneration. The results show that, before and after urban regeneration, the changes at the state layer are not obvious on the whole. The sharp decline of social dimension welfare indicates that urban regeneration generates some new pressures while alleviating the imbalance of social development, and at the response layer, there is not sufficient attention to the residents’ emotions at the social level. Changes in the state layer are different due to individual characteristics, but there is no matching differentiated response to maintain the stability of the state. The research results are of great significance for optimizing residents’ welfare and solving the problems of sustainable regeneration from the perspective of humanistic welfare.