Software Quality-in-Use (SQU) is a vital measure of how effectively software systems meet user needs, directly influencing satisfaction, productivity, and organizational efficiency. For state universities and government institutions, improving SQU is critical to ensuring accountability, transparency, and effective resource management. This study evaluates the Supply and Property Inventory Management System of a State University in Bicol using ISO/IEC 25010:2011 software quality metrics. The system plays a central role in managing supplies and equipment, reducing waste, ensuring compliance with regulations, and supporting data-driven decision-making. Through a combination of system development using the Incremental Model and a descriptive-quantitative evaluation, the research assesses the system’s efficiency, functionality, reliability, usability, maintainability, portability, and security. Respondents included both Supply and Property Management Office personnel and IT experts, providing a balanced perspective on system performance. Findings indicate that the system received an overall “Acceptable” rating, with strengths in efficiency, usability, and reliability. Areas that needed additional development were also highlighted, resulting in proposed software enhancement solutions. These findings emphasize the significance of ongoing system refinement in e-governance systems and show how strengthening SQU can increase institutional governance, improve operational efficiency, and contribute to more effective ICT-enabled public service delivery.