Multi-Benefit Decision-Making Process for Historic Buildings: Validation of the CALECHE HUB Conceptual Model Through a Literature Review

The CALECHE project, fundSby Horizon Europe, is pioneering sustainable renovation practices for historic buildings that balance energy efficiency with heritage conservation. While this study primarily focuses on energy efficiency in the context of historic building renovation, it also considers aspects of holistic sustainability, such as the use of sustainable materials and adaptive reuse strategies. Through a comprehensive literature review, this study validates the CALECHE HUB conceptual model, emphasising multi-benefit decision-making processes. Key areas of focus includes the assessment of cultural and social values, economic benefits, and environmental sustainability. The analysis explores adaptive reuse strategies and decision support systems (DSSs) to harmonise heritage conservation with energy retrofitting. Using four European demonstration sites as a proof of concept, the findings highlight the need for holistic approaches that respect historic integrity while promoting contemporary functionality. The study underlines the urgency of bridging research gaps, particularly in the integration of new technologies and LCA, to ensure that historic buildings remain vibrant, sustainable, and socially inclusive assets for future generations.