As the construction sector grapples with significant waste and resource inefficiency, transitioning to a circular economy is more crucial than ever. With this in mind, the EU-funded CIRCOFIN project brings together Munich, Copenhagen, Scotland and Lisbon to establish investment-ready circular construction hubs (CCHs). These hubs will transform local markets for secondary building materials through physical and digital infrastructures. The project’s innovative development assistance methodology will create a comprehensive CCH toolbox, facilitating the design and operation of these hubs. With over EUR 80 million in potential investments, the project aims to standardise approaches and provide insights for financiers, ultimately paving the way for widespread replication across 30 additional cities and enhancing the viability of circular economy initiatives in Europe.