Green auditing in higher education institutions is increasingly required by regulatory and accreditation bodies. However, existing practices are largely qualitative and lack consistency in evaluation. The current approaches often rely on checklists and self-reported information, which do not adequately reflect performance relative to institutional scale or operational demand. This limits comparability and reduces the usefulness of audit outcomes for decision-making. This study addresses this gap by developing a quantitative and normalised green audit framework that converts qualitative sustainability practices into measurable indicators. The framework is structured across twenty sustainability domains, each evaluated using defined sub-criteria and a normalized scoring system. Domain-level scores are aggregated to obtain an overall institutional performance index on a 100-point scale. The framework was applied to a representative university campus, Jawaharlal Nehru Technological University Kakinada (JNTUK), using field observations, institutional records, and physical verification of infrastructure and operations. The results indicate an overall score of 55.5/100, corresponding to a moderate level of sustainability performance. The higher scores were observed in infrastructure-based domains such as rainwater harvesting, while lower scores were noted in areas related to institutional processes, including curriculum integration and internal sustainability governance. The findings show that while several sustainability measures are in place, their effectiveness is limited by partial utilisation and lack of systematic integration. The proposed framework provides a structured basis for performance evaluation and can support institutions in identifying priority areas for improvement and shows consistent benchmarking across campuses.
