Sustainable urban development is a concept that has become increasingly important as the urbanization continues and more and more challenges are focused to the cities.  The Swedish government and authorities regulates and sets goals for how a sustainable urban development is to be achieved. These laws and goals are vaguely defined, which leads to disputes between the actors about how the term should be interpreted. By examining Västermalms Strand, an urban development project in Stockholm, this study strives to describe how involved actors interpret the concept of sustainable urban development and what the consequences of this are for urban development in Stockholm from an ecological, social and economic perspective. A case study has been carried out where a document study and interviews have been conducted. The interviews were conducted with four key actors from the private and public sector. The study shows that there exists no unified definition of what sustainable urban development is among the interviewees. Possible consequences of this are that the economic aspect can gain higher priority than the ecological and social, this because the economics of a project rarely can be compromised. However, there is a large common desire to develop a good city, which can be seen as a prerequisite for future sustainable urban development in Stockholm.