The platform contributes to the transition to a circular construction sector by focusing on drafting national, construction sector-wide agreements. Platform CB’23 connects all links of the circular construction chain, both within the civil engineering sector and the residential and non-residential construction sectors: from producer to demolisher, from client to executor and from large contractor and SME to start-ups. It doesn’t matter if someone has been pioneering for years or has just started to take steps towards circular construction. All perspectives are relevant! Funders, ICT practitioners, intermediaries, students, scientists and policy makers also make a valuable contribution.