The Introduction outlines the book’s rationale, research questions, methodology and theoretical frameworks within the context of London’s housing crisis and growing inequality. This context is encapsulated by the street homeless bedding down near citadels of private wealth in the form of luxury apartment blocks – many of which are half-empty – which cater for the global super-rich and are central to London’s property development. It is this juxtaposition – zero domestic space for those who desperately need it, but an overabundance of such space for those who don’t need or even want it – which lies at the cruel heart of London’s housing crisis. Other dimensions of this crisis include housing deprivation (e.g. overcrowding) and dispossession (e.g. evictions), both of which negatively impact upon London’s multi-ethnic working-class population. The chapter examines the highly controversial role played by estate demolition in relation to the housing crisis. The Introduction discusses critical urbanism, Bourdieusian sociology, verstehen sociology, and the sociology and geography of place. Place is examined in terms of attachment, images and myths, and also elective belonging (Savage) and selective belonging (Watt). Other central concepts include home and un-homing, neighbourhood and community, working class (Allen), values (Skeggs), marginalisation (Wacquant), gentrification, expulsions (Sassen) and displacement.