DTERBIM envisions an innovative, interoperable and adaptable BIM-based collaborative design and project delivery methodology (the DTERBIM process) for efficiently managing construction and renovation projects and optimising resource management (materials, products, energy), time, and costs while embedding circularity principles from the outset. This new DTERBIM paradigm will be enabled by the DTERBIM Toolkit – a suite of easy-to-use, cost-effective BIM-based digital tools, AI-powered services, and Digital Twins – all integrated within the DTERBIM ecosystem and demonstrated to TRL8. An openBIM framework will underly DTERBIM to maximise the potential of BIM, Digital Twins, and circular renovation workflows by supporting seamless tool interaction, robust data exchange, and effective stakeholder collaboration. Serving as the central orchestrator, this framework will integrate commercial solutions and newly developed collaborative services to guide users through the entire building lifecycle—from design, construction, and operation to maintenance, deconstruction, and reuse—ensuring measurable improvements across all stages. DTERBIM’s impact will be validated in two virtual pilots — for technology validation in early stages of the project — and demonstrated in three representative real pilots: (1) a residential historical building in Valladolid [Spain], (2) an academic building in Warsaw [Poland] and (3) a kindergarten and elementary school building in Athens [Greece]. The result is a more inclusive, open, and technology-agnostic ecosystem that accelerates the digital transformation of the construction sector, enhances innovation acceptability, and supports the EU’s sustainability and digitalisation goals