This volume gathers the abstracts of the 121 papers from the 14th ReUso Conference (Barcelona-Girona, 4–7 November 2026), titled New heritage and future strategies. Perspectives on conservation and promotion. Published for the first time within a Firenze University Press series, it reflects the scientific debate on climatic, technological, and social challenges in conservation. Structured into Knowledge, Diagnosis and Treatment, Intervention, and Promotion, it outlines research directions and methodologies on adaptive reuse and heritage, offering a concise overview to guide the care, transformation, and future transmission of built environments.