Why a single blended standard fails
When a manager tries to satisfy every tenant with one specification, the level drifts upward to match the most demanding occupant and the cost lands on everyone including those who never asked for it. Alternatively it settles at the average, and the demanding tenant complains continuously. Neither outcome is stable, and both consume management time that the arrangement was supposed to save.
Separating base from tenancy resolves it. The base level is set against what common property genuinely needs given the building's traffic, and it is defensible to every occupant because it relates to shared areas only. Anything beyond that is a private decision made by a tenant who wants it and pays for it, which removes the argument from the building entirely.
