While sustainability and green urbanism have become buzzwords in urban policy circles, too little analysis has focused on who gets to decide what green looks like. Many visions of the green city seem to have room only for park space, waterfront cafes, and luxury LEED-certified buildings, prompting concern that there is no place in the “sustainable” city for industrial uses and the working class. We will use the case study of Newtown Creek in Brooklyn, New York, to explore how different visions for the green city are enacted through activism and policy-making. Neighbourhood residents and business owners seem to be advocating a strategy we call “just green enough”, in order to achieve environmental remediation without environmental gentrification. Following the crash of both the financial and real estate markets, attempts to construct a sustainable city that is economically diverse and socially just seem to be taking hold. We interrogate how urban sustainability can be used to open up a space for diversity and democracy in the neoliberal city and argue that there is space for interventions that challenge the presumed inevitability of gentrification.