Stanford has now reached the point that they recently built an entire 35-acre campus just for administrators. [1] This is completely separate from the main campus and miles away. "The campus provides workspace for about 2,700 employees (including three of the university’s eight vice presidents) working in critical areas such as the School of Medicine administration, libraries and archives, business affairs, human res…
That said, Stanford is private, so I'm not sure they're a good example. Various state universities seem like they would be a more apt target to look at to see what this is like in reality.