Abstract
The purpose of this work is to highlight how companies operating in the building industry design a circular business model (CBM) and how collaborative relationships across the building supply chain enforce this CBM. Thereby, first, based on the literature, a framework is designed, and subsequently, is validated based on the historical analysis of the activities of four Italian companies considered as circular economy (CE) champions. This work enhances understanding of the phases and procedures followed by companies operating in the building sector to successfully implement a CBM and the role of collaborative relationships among the supply chain actors of this industry to increase their degree of circularity. The chapter offers empirical structured direction to managers intending to implement CBMs, and directions on how they can leverage collaborations across the building supply chain. The chapter considers that, in a supply chain, value can be cocreated through collaboration between the focal firm and other stakeholders and acknowledges the peculiarities of the building sector.