The third General Assembly of the Circ-Boost Project, in which the Faculty of Civil Engineering participates as one of the key partners, took place in Barcelona from June 27th to 28th, 2024. Prof. Dr Ivan Ignjatović, the leader of Work Package 3, presented the progress of this work package, as well as the progress of Pilot 3, which is headed by the Faculty of Civil Engineering in Belgrade and aims to develop, test and demonstrate circular solutions in structural engineering through the construction of modular and demountable ground-floor building. Prof. Dr Zorana Petojević, the leader of Work Package 4, highlighted the progress and results of developing a cutting-edge 3D web-based circular economy map aimed at mapping the circularity potential of existing building stock and maximizing their utilization.