The rapid advancement of digital technologies and the development of smart cities have accelerated digital transformation across industries, with smart buildings serving as a critical foundation for this transition. Indoor Geographic Information System (GIS) technologies play a pivotal role in smart buildings, offering advanced spatial analysis capabilities to enhance facility management, improve energy efficiency, and provide personalised services such as indoor navigation and real-time positioning. Despite their potential, the application of indoor GIS in smart building development remains underexplored. This study investigates the potential of indoor GIS applications in smart buildings, using a local university campus as a case study. By integrating Axiomatic Design (AD) theory and empirical models, this research evaluates the preferences and expectations of campus stakeholders regarding indoor GIS features. Regression analysis of the results highlights significant demand for applications such as personal location sharing, real-time crowd monitoring, and indoor navigation. The findings provide actionable insights into user-centric design for indoor GIS and its extended applications, which contribute to integrating digital technologies into a smart building ecosystem. This study offers a practical framework for advancing smart building capabilities, aligning with broader sustainability and digital transformation goals.