A warehouse is the building type where the per-square-foot habit does the most damage. Two hundred thousand square feet sounds like a very large cleaning contract and is usually a small one, because almost all of that area is sealed concrete under racking that is swept by a ride-on machine in passes. The cleaning that costs money is in the few thousand square feet of offices, welfare and despatch, plus a set of periodic tasks that have nothing to do with area at all.
The floor is a machine job, and it is priced in passes
A ride-on sweeper or scrubber covers a known area per hour, so the floor cost is machine hours plus an operator, not a rate per square foot. That is why doubling the warehouse footprint rarely doubles the cleaning price: it adds passes, and passes are cheap relative to the fixed cost of getting the machine and the operator on site at all.
The expensive square feet are the small ones
Offices, canteens, locker rooms and washrooms inside a warehouse are ordinary commercial cleaning and price like it. On most sites they are a single-figure percentage of the area and a large share of the cost, which is why a specification that gives one blended figure for the whole building tells a contractor almost nothing useful.
Racking, high level and dust are periodic, not nightly
High-level dust on racking, beams and services is a real and occasionally regulated task, and it is bought by the visit with access equipment rather than as part of a round. It should be a named line with a named interval, because it is the first thing dropped when a price needs to come down and the last thing anyone notices has gone.
Access is the variable that moves the number
A twenty-four-hour operation, a single-shift site and a seasonal peak are three different contracts. Machine work needs clear aisles, so whether the cleaner gets them, and when, is worth more attention in the specification than the frequency table usually receives.
What the published rates in this record are good for
They are good for the office portion and nothing else. Every per-square-foot figure here was published as a commercial and office cleaning rate by the company that published it, and none of them was measured on a distribution floor. Using one to sanity-check the welfare and office block is reasonable; using it across the whole footprint will produce a number that is wrong by a large multiple in whichever direction the racking happens to push it.
Questions people ask about warehouse cleaning
Is warehouse cleaning cheaper per square foot than office cleaning?
Almost always, and by a lot, because the bulk of the area is machine-swept concrete. That is also why the per-square-foot framing is misleading: the cheap area dominates the denominator and hides where the cost actually sits.
Do I need a ride-on machine or will a contractor bring one?
Contractors bring them, and some will propose leaving one on site on longer contracts. Either is fine; what matters is that the proposal says which, because an owned machine and a hired one are different cost structures over three years.
How often should racking be dusted?
It depends on what you store and what your insurer or auditor expects. The useful move is to make it a named line with an interval rather than an assumption, so that it survives the first price review.