Mara Ferreri’s new book is a welcomed addition to the rapidly expanding temporary urbanism literature in several ways. First, the book is situated in London, which is an under-researched area in temporary urbanism. Although Lauren Andres and Amy Zhang (2020) present a large collection of the practice of temporary urbanism around the world, only one of the 14 studies involves London, covering three small projects of gardening or retail uses of public spaces only. London holds a unique place in the field of temporary urbanism. It is not only one of the cities where the idea of temporary urbanism is propelled to the rest of the world, but also an ideal testing bed for the effectiveness of temporary urbanism as a solution to urban issues. Specifically, London has the practice of temporary urbanism for decades across a wide spectrum, large social and economic disparity among neighbourhoods, good concentration of artistic and performative practitioners and active creative industries, and the experience of hosting many mega events and consequently a series of mass redevelopment and regeneration projects. Simply put, London deserves its own book in temporary urbanism, just like Berlin in Overmeyer (2007). The Permanence of Temporary Urbanism: Normalising Precarity in Austerity London fills this gap. Moreover, the book focuses on the temporary uses of privately owned properties, which offers rich context for discussions on the complex relationship among multiple stakeholders, such as local governments, property developers, real estate agents, landlords, and art practitioners. Therefore, it is a good companion of Alessandro Melis, Jose Antonio Lara-Hernandez and James Thompson’s (2019) book on the temporary appropriation of public space in cities. The in-depth analysis based on primary data obtained from longitudinal and semi-ethnographic studies is also unique, because many of the recent publications on the topic tend to use either secondary data or adopt short study period, such as the examples in Madanipour (2017). In summary, the book will make a good supplementary reading in a course that covers temporary urbanism, and a useful reference for research on this topic.