Why zones rather than a building
A single line covering the warehouse produces a single frequency, a single method and a single price for areas that have nothing in common. The amenities need daily attention, the traffic lanes need a regular sweep and a periodic machine cycle, the racking bases need a manual pass on rotation, and the office needs a presentation standard. Each of those is a different purchase with a different logic.
Splitting them lets each follow its own logic and lets a manager see where the money goes. It also makes change simple. A site that takes on more volume can increase the lane frequency without renegotiating the office, and one that needs to reduce cost can see exactly which zone to adjust rather than being offered an across-the-board cut. Across-the-board cuts are how a scope loses the things that mattered.
