This publication is the result of a collaborative research process between 20 co-authors and multiple organisations, created with the aim of providing developers and other actors in the building industry with knowledge and tools that support the application and practice of circular construction principles in urban development. The book’s production is therefore akin to the industrial and organisational processes it promotes: modular elements of knowledge provided by a cluster of experts and assembled as a package of relevant perspectives, divided across five thematic chapters. It also includes several downloadable resources to help you in your pursuit of applying the principles.