A single number invites the wrong argument
When cleaning appears as one figure, the only available discussion is whether it is too high. Owners have no way of forming a more useful view, so the debate becomes about the contractor rather than about the building. That produces retenders every couple of years, each one comparing numbers attached to scopes nobody has read, and a service that gradually erodes without any decision being made.
Split into areas, the conversation changes character entirely. It becomes possible to say that the amenities cost more than the lobby, that the car park is a small proportion of the total, or that periodic works account for a quarter of the year's figure. Those are statements a committee can act on. A single total supports no action other than seeking a lower one. The difference is entirely in the presentation of the same information.
