Objective
REBUILD aims to accelerate climate‑neutral building renovation by enabling large‑scale adoption of reversible, low‑carbon building systems. It integrates construction products, building envelopes and technical building systems within a harmonised whole‑life carbon (WLC) and circularity framework, directly addressing gaps identified in the Built4People call.
To support robust decision‑making, REBUILD applies Life‑Cycle Assessment (LCA)—a standardised method for quantifying environmental impacts across all life‑cycle stages—and Life‑Cycle Costing (LCC), which evaluates all renovation‑related costs over the building’s lifetime. These are combined with circularity metrics aligned with Level(s), EPBD, EN 15978/15804 and EN 16627.
The project develops six innovations:
• system‑level integration of circular, reversible solutions;
• a renovation‑specific WLC framework;
• a multi‑criteria decision‑support tool combining WLC, LCC, technical and circularity indicators;
• full‑scale prototype validation in three European climates;
• parametric and BIM‑based digital workflows;
• standardisation‑ready guidance and circular business models.
Performance is validated through extensive testing, including Non‑Destructive Testing (NDT)—methods such as ultrasound, infrared thermography, radar scanning and chemical screening that assess material integrity without damage—and Destructive Testing (DT), including core sampling, bending/shear tests and cyclic loading to verify structural capacity, durability and fire performance.
Full‑scale prototypes demonstrate ≥20% WLC reductions, ≤5% damage during disassembly and ≥25% reductions in installation/disassembly time. These results feed into benchmarks and certification pathways, supporting EU‑wide harmonisation.
REBUILD thus delivers validated solutions, digital tools and standardisation inputs that reduce embodied carbon, increase reuse and accelerate circular renovation—fully aligned with the call’s expected outcomes.
Fields of science (EuroSciVoc)
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.2.5 - Climate, Energy and Mobility
MAIN PROGRAMME
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Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-RIA - HORIZON Research and Innovation Actions
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-CL5-2026-02
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
7034 Trondheim
Norway
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.