As part of the ReBuilt project, a jointly developed cross-national training programme, Fit for Circular and Digital Construction, was created to strengthen knowledge, skills, and practical competences supporting circular economy transition in the Central European construction sector. The programme was designed to address the growing need for education and capacity building related to circular construction, digitalisation, sustainable materials, and innovative business approaches within the built environment. It brought together expertise from project partners across Central Europe and supported knowledge transfer between industry, SMEs, public authorities, research institutions, educational organisations, and future professionals. The training programme was tailored to different stakeholder groups and combined strategic, technical, and practical learning components relevant to circular and digital transformation in construction. Main focus areas included: Circular economy principles in construction Sustainable material use and secondary raw materials Digital tools supporting circular construction and transparency Green Public Procurement (GPP) and environmental regulation Circular business models and innovation approaches Life Cycle Assessment (LCA) and Environmental Product Declarations (EPDs) Good practices and case studies from across Central Europe The programme supported both structured learning and stakeholder-oriented capacity building through training activities, practical exchange, and digital educational resources. Key results Development of a jointly designed transnational training programme Strengthened skills and competences for circular and digital construction Tailored learning approaches for different stakeholder groups Cross-border educational cooperation and knowledge exchange Integration of practical case studies and good practices Support for long-term transition toward circular economy principles in construction Impact This jointly developed solution contributed to stronger educational capacity, stakeholder readiness, and wider adoption of circular and digital construction practices across Central Europe.

As part of the ReBuilt project, jointly developed technical solutions for circular construction were created to support more sustainable material use, lower environmental impact, and stronger circularity within the construction sector across Central Europe. Building on pilot activities and practical testing in real environments, the project developed innovative, co-designed technical solutions focused on sustainable concrete-based construction products and circular material applications. These solutions addressed the full construction value chain — from waste recovery and material reuse to the development and application of more sustainable construction products. A key focus was placed on reducing dependence on primary raw materials, increasing the use of renewable and recycled secondary raw materials (SRM), and supporting lower-carbon construction approaches. The technical solutions included development and validation of circular construction products such as: Sustainable concrete-based materials Bio-based and natural fibre-supported concrete solutions Recycled aggregate-based construction products Circular product approaches supporting waste-to-resource transformation The solutions also supported improved durability, reusability, and resource efficiency through practical innovation and eco-design principles. Key results Development of jointly designed technical solutions for circular construction Validation of sustainable concrete-based products and circular material applications Increased use of recycled and renewable secondary raw materials Support for waste-to-product value chains in construction Improved resource efficiency and lower environmental impact Strengthened practical innovation for circular construction systems Impact This jointly developed solution contributed to advancing circular material use, technical innovation, and more sustainable construction practices, supporting the transition toward low-impact and resource-efficient building systems across Central Europe.

As part of the ReBuilt project, innovative digital solutions were jointly developed to strengthen circular construction practices and support the digital transformation of the construction sector across Central Europe. Building on the results of the pilot action (O.2.2), the project focused on co-designing and co-creating practical digital tools that improve transparency, collaboration, and efficiency within circular construction value chains. These solutions were designed to address key challenges related to material traceability, reuse, and market integration, while supporting a more connected and sustainable construction ecosystem. Developing a Digital Business Ecosystem One of the key outcomes of this activity was the development of a digital business ecosystem for circular value chains, enabling stronger collaboration between stakeholders involved in construction, demolition, recycling, and material reuse. This ecosystem supports knowledge exchange, improved resource management, and stronger links between suppliers, service providers, and end-users of secondary construction materials. Digital Material Passports and Online Marketplace To improve transparency and lifecycle management of materials, ReBuilt introduced Digital Material Passports (DMPs) as an important digital solution for circular construction. These passports help improve: Material traceability and transparency Lifecycle tracking of construction products Better decision-making regarding reuse, recycling, and recovery Increased trust and quality assurance in secondary materials In parallel, the project also supported the development of a digital online marketplace, creating opportunities for easier exchange, reuse, and valorisation of secondary construction materials. This platform strengthens circular business opportunities and helps reduce waste by improving access to reusable and recyclable resources. Supporting Innovation Through the GAIA-X Case Study The jointly developed digital solutions also served as an important output for the GAIA-X case study, contributing to improved interoperability, secure data exchange, and scalable digital innovation within circular construction ecosystems. This strengthened ReBuilt’s role in connecting digital transformation with circular economy principles and future-oriented construction solutions. Building a More Transparent and Circular Future Through these co-created digital solutions, the ReBuilt project demonstrated how digital tools can support more transparent, efficient, and sustainable construction processes. By integrating digital business ecosystems, material traceability solutions, and marketplace platforms, ReBuilt contributed to building stronger circular value chains and advancing the transition toward a more resilient and digitally enabled construction sector in Central Europe.

As part of the ReBuilt project, a Common Strategy for Circular and Digital Construction in Central Europe was jointly developed as a key strategic output to support the long-term transition toward a more sustainable, innovative, and digitally enabled construction sector. The strategy serves as a practical blueprint for the implementation of circular economy principles and digital transformation within the construction industry across Central Europe. It was designed to provide a shared framework that supports stronger regional cooperation, improved resource efficiency, innovation uptake, and sustainable construction practices. A Strategic Framework for Long-Term Transformation The Common Strategy was developed to guide stakeholders in addressing key environmental, economic, and digital challenges affecting the construction sector. It focuses on supporting: Circular construction practices and resource efficiency Digitalisation and transparency across construction value chains Collaboration between public authorities, businesses, SMEs, research institutions, and education providers Strengthening innovation and market readiness for sustainable construction solutions Capacity building and long-term knowledge development By creating a shared regional vision, the strategy supports a more coordinated and resilient approach to circular and digital construction in Central Europe. Supporting Local, Regional, and National Implementation A major objective of the strategy is to serve as a foundational document that can support the development and implementation of local, regional, and national strategies for circular and digital construction. Through dissemination and promotion by organisations active in circular economy, construction, and sustainability networks, the strategy is expected to contribute to wider adoption of best practices not only in Central Europe, but also across Europe more broadly. This strengthens its value beyond the project itself by supporting long-term policy development and strategic planning. Aligned with European Priorities The Common Strategy was developed in alignment with the Interreg Central Europe Programme 2021–2027, ensuring consistency with broader European priorities related to sustainability, innovation, regional cooperation, and digital transformation. This alignment supports stronger integration of circular construction approaches into future policy frameworks and development initiatives. A Shared Vision for the Future Through the development of this jointly created strategy, the ReBuilt project established an important roadmap for future cooperation and action. The strategy represents a shared commitment to building a construction sector that is more circular, transparent, digitally connected, and environmentally responsible. By combining policy direction, stakeholder collaboration, and long-term strategic planning, ReBuilt contributed to shaping a stronger and more sustainable future for construction in Central Europe.

As part of the ReBuilt project, a jointly developed Holistic Solution as a Service (SaaS) was created to support the wider implementation of circular and digital construction practices across Central Europe. Building on the results of previous pilot activities, this integrated solution was designed to be implemented through the Circular and Digital Construction Hubs established in nine Central European countries. The SaaS model provides a practical and scalable service framework that supports knowledge transfer, technical assistance, and digital innovation within the construction sector. A Comprehensive Service Model for Circular and Digital Construction The holistic Solution as a Service was developed to provide stakeholders with accessible, coordinated, and practical support for the transition toward more sustainable and digitally enabled construction systems. The service model covers three key areas: Educational services supporting knowledge development, training, and capacity building for professionals and organisations Technical services focused on practical solutions, innovation support, and implementation of circular construction approaches Digital services improving access to tools, platforms, and technologies that strengthen traceability, transparency, and digitalisation Information services providing relevant guidance, resources, and knowledge needed to promote circular and digital construction practices Together, these services create a more connected support system for stakeholders involved in construction, material reuse, innovation, education, and policymaking. Strengthening the Role of Circular and Digital Construction Hubs The SaaS solution strengthens the role of the Circular and Digital Construction Hubs as regional support centres for collaboration, innovation, and knowledge exchange. By implementing this service model across multiple countries, the hubs can better support: SMEs and industry stakeholders Public authorities and policymakers Researchers and educational institutions Architects, designers, and investors Construction companies and other technical professionals This approach improves accessibility to expertise and encourages stronger transnational cooperation within the Central European construction ecosystem. Supporting Long-Term Sustainability and Digital Transformation The jointly developed SaaS solution reflects ReBuilt’s commitment to creating practical, long-term support mechanisms beyond the project duration. By combining education, technical expertise, digital tools, and information services into one integrated model, ReBuilt contributed to building a stronger foundation for circular economy implementation and digital transformation in construction. A Scalable Model for Future Growth As a shared solution implemented through regional hubs, this service model offers a scalable approach that can continue supporting innovation, collaboration, and sustainable construction development across Central Europe. It represents an important step toward creating a more resilient, transparent, and digitally connected construction sector.