I have found over the ages, that a building that has the mechanical areas, basements, elevator rooms, etc., clean, painted and well lighted add to the motivation of the staff. It also gives the staff pride. In other words it is not a dingy place to work. Also, the attitudes of contractor change as well, when they work in such well kept buildings (they tend to do a less sloppy job). While these areas are hidden to most people, so are the rewards of their good up keep.
It is rather simple, pay a little now or pay much more later as the cost may end up costing more then just money later.
Not sure if I am making any sense.
PGrech