This study validated the theoretical keypoints obtained from a previously published scoping literature review within the context of three Norwegian World Heritage sites: Røros, Rjukan, and Notodden. The cross-sectional table of the urban heritage facility management (UHFM) framework, which is based on interviews and correspondence, demonstrates the connection between the tasks of the six clusters of technical departments responsible for the provision of urban-scale support services and the modified critical steps of the Historic Urban Landscape approach, in which an additional step for “monitoring and evaluation” was included. UHFM operates at the intersection of heritage preservation, urban-scale facility management, and stakeholder coordination, which requires a careful balance between urban heritage conservation and sustainable urban management practices, thus enabling the preservation of World Heritage status that, among others, fosters sustainable tourism. The three case studies highlighted the significance of UHFM in preserving heritage value, authenticity, visual quality, and significance. Besides providing comprehensive support services that extend beyond the daily tasks of conservators and World Heritage managers, UHFM also allows feedback mechanisms for continuous improvement. This study highlighted the complex relationship between the provision of urban-scale support services and the preservation of Outstanding Universal Value as the core business of World Heritage sites.