CityLoops ( is an EU-funded project focusing on biowaste, and construction and demolition waste (CDW) across seven European cities (Apeldoorn, Bodø, Høje-Tasstrup, Mikkeli, Porto, Roskilde, Seville), which are piloting a series of demonstration actions with the aim of achieving material circularity. The project is developing a series of interventions that will embed circularity within the planning and decision-making processes.