Due to globalization and influx, Sweden is facing the challenge of fostering socially inclusive and non-segregated cities. To tackle this challenge, the implementation of social sustainability in urban development projects is crucial. Therefore, this study examines how leadership is perceived to facilitate this process. For this purpose, the authors propose a leadership approach consisting of three aspects (i.e., Communication of Vision, Stakeholder Engagement, Adaptation to the Transition Process) and a framework that makes social sustainability tangible in an urban context. The context of this descriptive case-study was Drottninghög, a multicultural district in Helsingborg, which was the focus of an ongoing urban development project during the conduction of this thesis. The study made use of a qualitative approach, consisting of semi-structured interviews with leaders and community members in Drottninghög and unobtrusive field observations. The data were analyzed using a directed content analysis. Among the main findings were the importance of the use of diverse communication strategies and channels and continuous information loops, to adequately reach all stakeholders while communicating the vision; the significance of empowering stakeholders to actively engage in the community by offering appropriate and diverse activities and creating a personal atmosphere as well as including stakeholders as early as possible in the processes; and the value of leaders being flexible and adaptive to individual needs through inside knowledge and personal involvement when supporting stakeholders to adapt to the transition process.