In the European Union and around the world, construction materials have a massive impact on climate change, ecosystems collapsing and natural resource overconsumption. As a waste prevention strategy, reuse is a great solution to overproduction and natural resource depletion. The regulations currently in place mainly concern the energy performance of buildings or waste management. They therefore mainly focus on the design, occupation and end-of-life phases of buildings. However, a more global perspective is increasingly required for this sector accompanied by a shift from ‘energy efficiency’ objective to ‘resource efficiency’ objective, as recommended by the European Union. The report aims to set out the essential ingredients for the development of a roadmap and presents a state of the art of circular economy strategies and in particular how reuse applied to the construction sector is represented. This document is developed in the framework of the Interreg NWE - FCRBE project which aims to foster reuse practices in the construction sector.