Consumption follows headcount, not lot count
A scheme's budget is built around the number of lots, but consumables in a shared bathroom are driven entirely by the number of people on site each day. When a vacant suite is let to a business with three times the staff of its predecessor, nothing about the scheme changes on paper while the actual usage jumps immediately and permanently. Committees tend to read that as a cost blowout rather than as the occupancy change it actually is.
Showing consumables as a visible line rather than folding them into a single service figure makes the movement legible to everyone. When the committee can see supply cost separately from labour, a rise reads as more people using the building rather than as a contractor quietly charging more for the same work. That distinction is usually the whole difference between a calm budget review and a suspicious one that ends in a tender.
