Construction and Demolition Waste (CDW) represents a significant challenge for the construction industry, with substantial environmental, social, and economic impacts that demand effective solutions. RECONMATIC tackles this issue by developing methodologies to enhance the circularity and climate neutrality of CDW based or derived materials. The work package (WP5) focuses on unlocking added-value uses for CDW, optimizing reuse and recycling processes, validating materials, and addressing both technical and market barriers. These efforts aim to support the transition to sustainable and scalable solutions for the construction sector.A key priority of WP5 is extending the service life and fitness for use of construction products and systems. By employing selective dismantling processes and advanced non-destructive techniques the condition of construction components is thoroughly assessed. This approach identifies opportunities for reuse, either in their original purpose or for alternative applications, contributing to resource conservation and a reduction in construction waste.To further maximize the value of CDW, the project is also developing methodologies to assess and enhance the utility of materials across various supply forms, including on-site sorting, off-site sorting, and mixed fractions. Special attention is given to mineral fractions, alongside other materials such as wood, glass, and plastics. These methodologies involve conducting initial assessments, addressing information gaps, and creating decision-making tools to define purification needs and potential applications. Comprehensive fitness-for-use evaluations and targeted R&D recommendations ensure these materials can meet market and industry standards.Integrating these methodologies into the broader construction ecosystem is another critical aspect. By linking with BIM models, the work package generates detailed datasets that improve planning for selective dismantling and demolition processes. Non-destructive testing techniques are promoted to analyse materials without compromising their service life, while BIM elements for recovered materials are developed to facilitate practical reuse. These actions enhance interoperability with prior work packages (WP2, WP3, and WP4) and ensure alignment with real-world construction and market requirements.Market barriers are also tackled. By proposing strategies to achieve certification under relevant standards — such as CE marking and the EU Construction Products Regulation — or implementing transparent reporting mechanisms where certification is not feasible, the work package builds trust in CDW materials with high recycled content materials. Stakeholder engagement and public awareness campaigns further address misconceptions, while insights from international policy frameworks highlight incentives such as tax reductions and subsidies to promote circular construction practices. The outcomes of WP5 include methodologies to provide new added-value uses for CDW streams, strategies to promote market adoption of CDW-based products, and tools to characterize and validate treated CDW and final construction materials.