Stockholm, the capital of Sweden, represents a prime example of an internationally successful and competitive city, structured around a high cost, innovation-driven economy.But it is also a socially, economically and ethnically highly segregated city. In 2014, the Stockholm City Council got a new political majority, that decided to do something about the growing inequalities. In the city budget of 2015, the most important governing document of the city, the new ruling coalition stated that the development towards a more divided Stockholm should be halted and turned. As one important measure to achieve this goal, the city created the “Commission for a Socially Sustainable Stockholm” (Kommissionen för ett socialt hållbart Stockholm). The work of the Commission is the focus of this case study, it is an action by the city carried out 2015–2017 that in a direct sense addresses inequalities and spatial differences in life conditions within the city of Stockholm.