The CircularB Action aims to establish an international circularity framework for inclusive application and assessment in new and existing buildings. It supports decision-making for all stakeholders in the value chain and evaluates the implementation level of the European Circular Economy Action Plan (ECEAP).

This international framework includes a circularity rating tool with Key Performance Indicators (KPIs) that can be applied and adapted by various countries and regions. A benchmark database, tailored to each country/region's unique conditions, culture, and traditions, enables direct utilization of the tool. It benefits designers in creating sustainable buildings and assists national/local governments in evaluating and promoting their Circular Economy targets.