This paper proposes a Network Science-based approach to map the spatial use of public and social spaces on the ground and elevated levels and analyse these spaces as networks of socio-spatial nodes in high-density vertical urban environments to provide insights into actual space use. The presented study integrated micro-mobility sensors data with visual observation surveys and spatial maps to (1) identify mobility patterns of users, (2) establish correlations between mobility patterns, spatial networks, and space-use, and (3) analyse the efficacy of spatial arrangements and their use to allow for better-informed future planning and design decisions. The study used Kampung Admiralty (KA), an award-winning integrated mixed-use building designed by WOHA Architects, as a case study. KA is Singapore’s first integrated public development that integrates and co-locates a mix of residential, commercial, retail, community facilities, and social amenities, including green open spaces in a vertically distributed spatial arrangement. The study provides important insights into the relationship between the socio-spatial networks at the ground and elevated levels and identifies key connectors that encourage, influence, and enable socially and spatially effective vertical public space networks. It further presents a framework for quantitative analysis that can inform the efficient and effective planning and design of vertically distributed spaces that can support higher population densities, higher environmental sustainability standards, and enhanced liveability.