Closing the loop of materials circulation is certainly the right way to decrease the pressure humans place on the environment. Although many efforts have been made toward effective mitigation of anthropogenic impacts, mostly on the policy dimension, there is still much more to do. The transformation affects every phase of the building’s lifecycle, which therefore requires the engagement of all value chain actors and suppliers, often assigning them new roles and responsibilities. The experiences gained from over a decade of the EU’s journey towards CE clearly indicate that, regardless of how good the legal regulations are and how effective the educational efforts are, achieving the goals of maintaining resources in the economy is not possible without the implementation of innovation and proper business models. Considering that materials and resources marketplaces are among the most common areas of Contech investment, it is worth considering what role polymer concrete composites (CPC) may play in the sector's quest for circularity. This article will try to find an answer to this dilemma by discussing the meaning of CE for the sector, its main drivers, and implications for the supply chain.