The appeal of using technology as an answer to all our growing urban problems has enticed planners to strive for cities that are “smarter”, “resilient”, and “sustainable” for a better, more liveable future. But who are we improving cities for? Who gets to be served and who is left behind? Urban planning has largely been fragmented and instituted around loosely coupled organisations within municipal and regional governments, and across transport, energy, and housing providers. While some communities have enjoyed the benefits of big-tech provision of public spaces, and the transference of ownership from state to private operators, many more have suffered disproportionately by being pushed to the physical and technological periphery of continual development in cities. The objective of this session is to elaborate on the current state of spatial inequalities that manifest among communities in urban spaces and evaluate who receives the benefits of transformations. Through examples of energy, housing, and mobility, I will illustrate how designing infrastructure at scale for a better quality of life for all requires us to think in an integrated and systemic manner, while using transdisciplinary and participatory approaches. Building more inclusive and just cities will need us to challenge our perspectives on technology and governance. In this talk I will discuss how my colleagues and I at the Centre for Urban Science & Policy (CUSP) use spatial data science, modelling and participatory approaches to tackle problems of urbanisation in a way that seeks social justice.