The proposed thesis focuses on the importance of applying circular strategies for the management of long-lived, high-use assets in the university sector, where the benefits obtained are greater than the costs; however, the assessment tools lack proper consideration of the aspects of the circular approach, especially regarding long-term durability and replacement cycles. The thesis proposes an extension to the SBTool/ITACA assessment tool to include a new circular aspect specifically designed for the university sector’s needs, in the form of a Durability and Replacement Cycles indicator (Durability Ratio) for campus building envelopes. A literature review focused on the SBTool/ITACA and CircularB COST framework for the analysis and allocation of the elements according to SBTool/ITACA enabled the diagnosis of the degree of coverage and the differences among the elements relative to the circular approach interpretation according to the framework, highlighting a key gap in Service Quality, E2: Optimisation & Maintenance.