The lab equipment is constantly evolving, needs repair, maintenance, on-site training. Perhaps you are thinking of a lab bench that is going to last the lifetime of the building and I am thinking of a computer server, 3D scanner, 3D printer, MRI machine (small lab system), etc.

My son has taken second year organic chemistry classes that had more computer hardware and software than I ever had in my electrical engineering/computer science classes in the early 1990s. The software might be open source, or might have ongoing software license fees. While those specific teaching labs should be paid for through tuition, imagine similar or more advanced versions in the research labs.

J. Random Professor is using lab #12 for his group. Apportion the overall building expenses by square foot to his grant budgets, or something along those lines.