The paper aims to explore how the reflection on urban scale digitals twins and the debates about the role of commoning practices in architecture and urban design could be combined in a way that would address climate justice and social justice simultaneously. At the core of the arguments developed in the paper is the idea that sustainable environmental design and regenerative design necessarily involves an exploration of how one can reconceive the redistribution of wealth, land, and power. Useful for understanding how architecture and urban planning can act as actors connecting planning, infrastructure, and land is the ‘negotiated planning’ approach given that it places particular emphasis on “the actions and agendas of a whole range of stakeholders who together work to configure a fragile system which is constituted through and co-constitutive of each urban context.” The paper also intends to examine the role of commoning practices in data-driven society, placing particular emphasis on urban scale digital twins, which are virtual replicas of cities that are used to simulate environments and develop scenarios in response to policy problems. Among the main objectives of the paper is the exploration of how issues related to social and spatial mobility can be tackled simultaneously through the use of concepts such as “motility”, which is employed by urban sociologist Vincent Kaufmann, and “mobility justice”, which is used by sociologist Mimmi Sheller. The specificity of the notion of “motility” lies in the intention to understand social and spatial mobility as capital, and the endeavour to address the displacement of both concrete entities (e.g. consumables, machinery or people) and abstract entities (e.g. information, ideas or norms) simultaneously, on the other. Sheller coined recently the term “mobility justice” to respond to the dilemma whether the term migration or mobility is more socially equitable
