To prepare for future regulations, technologies, and sustainability goals, German companies are shifting their site planning approaches towards long-term flexibility. This is achieved through means like adaptable factories, multi-use facilities, and a future-proof energy infrastructure. As part of the DELTA Energy Laboratory, transformation strategies for producing companies are being analyzed and implemented. To this end, key performance indicators (KPIs) were developed around a metalworking facility to evaluate land use and densification of localized production sites, based primarily on high-level information. The four KPIs are: site area utilization, proportional and absolute floor space utilization, and proportional base area utilization. Considered building types include factories, energy utilities, office spaces, storage facilities, data centers, and roads, supplemented by additional site area used for green spaces, bodies of water, and social infrastructure. These KPIs were applied to production sites in the metalworking and chemical industries. The results for the latter showed that, based on specified company goals, future transformations should prioritize expanding production facilities, while slightly reducing ecological spaces without affecting social spaces.