Sharing and collaboration is also emerging as a model for a new urban lifestyle and new forms of social cohesion. Urban residents increasingly conceive private spaces and goods as common spaces and resources open to access or use by other people, share needs and tasks, help each other, give birth to new ways of living and moving within urban contexts, generate new forms of reciprocity, self- and mutual aid. Local governments following the capability approach are enabling forms of generative welfare to foster human flourishing. What are the lessons and forms of social innovation that we can learn from? One possibility is the regeneration of neighborhoods, private spaces and buildings to transform them into common spaces for co-living, co-housing, and other forms of collaborative living and welfare. The emergence of an urban collaboration class is transforming social relations between urban inhabitants and therefore should trigger a rethinking of welfare systems at the urban level.