Commercial Cleaning Contract Pricing: How a Bid Is Built
Commercial cleaning contract pricing looks like a square-foot rate. Underneath, it is a labour-hours calculation, and that is where two bids for the same building diverge.
Commercial cleaning contract pricing is built from labour hours, not from square footage. A contractor walks your building, counts the work, applies production rates to get man-hours, prices those hours, then divides back into whatever unit you asked to see. The square-foot rate is the output, not the input.
That distinction is the whole game. Two bids can quote the same monthly figure and buy you wildly different amounts of work.
Quick answer
Every commercial cleaning bid is really an estimate of labour hours. The contractor counts the work, applies production rates, prices the hours, then expresses the total as a monthly fee or a square-foot rate. If you only compare the totals, you cannot see which bid staffed your building properly.
Why two bids for the same building differ by thousands
Labour is the bid. The Building Service Contractors Association International puts labour at 50 to 80 percent of the total price of a commercial cleaning job. Everything else, supplies, equipment, supervision, insurance and margin, shares the remainder.
Because labour dominates, the single assumption that moves a bid most is the production rate: how much floor one person is assumed to cover in an hour.
Inflate that number and the bid falls almost in proportion. Nothing else has to change.
The four ways a bid gets priced
| Model | How it is calculated | Best fit | Watch for |
|---|---|---|---|
| Per square foot | Work-loaded hours, then divided back by area | Comparing several sites of different sizes | Cleanable vs gross square footage |
| Per hour | Burdened hourly cost, times hours, plus margin | Variable or unpredictable scope | You are buying time, not outcome |
| Flat monthly | Annual hours, plus costs, divided by 12 | Stable nightly routines | Holiday months and unused visits |
| Per task | Each line priced on its own rate | Side-by-side bid comparison | Scope gaps between line items |
Per square foot
This one is the most requested and the most misunderstood.
A contractor measures by floor type, counts restroom fixtures, counts trash receptacles, applies production rates to each, and arrives at hours. Only then does the rate per square foot get calculated. A bid that starts at a rate and works backwards is a guess dressed as arithmetic.
Two traps sit inside it. The first is cleanable versus gross area, since stairwells, shafts, mechanical rooms and empty suites change the denominator. The second is that soil load does not scale with area at all. Restrooms are priced by fixture, which is why the Worldwide Cleaning Industry Association, known as ISSA, publishes a separate fixture method alongside its area formula.
Per hour
Price equals burdened hourly cost, times hours, plus margin. The input that matters is the word burdened.
The Bureau of Labor Statistics reports a median wage of 17.71 dollars an hour for janitors and building cleaners as of May 2025. That is the wage, not the cost. Payroll taxes, workers' compensation, general liability, unemployment insurance, uniforms, background screening and paid time off all load on top. Writing in Contracting Profits, Jordan Tong put direct wages at 75 to 80 percent of a janitorial budget with fully loaded labour reaching roughly 90 percent.
A bid priced off the wage alone is a bid that either loses money or is not carrying the insurance it claims.
Flat monthly
The contractor works out annual hours, adds supplies, equipment, supervision, overhead and margin, then divides by twelve.
Months are not equal. Five nights a week across a year is roughly 260 service nights, which averages about 21.7 per month. A flat fee is an averaging device, so ask what happens in a month with three holidays and whether missed visits are credited.
Per task
Each line is priced against its own rate. This is the model that produces line items you can actually compare, because differences in scope stop hiding inside one number.
What actually drives the number
Production rates are the lever, and they vary far more than most buyers expect.
ISSA's own figures show mopping with a 14-inch flat mop at 5,355 square feet an hour, while light-duty spot cleaning runs at 1,000 square feet an hour. Same building, same person, a five-fold difference depending on the task.
Comprehensive rates, the blended figure across a whole building, land far lower. A worked example from the Building Service Contractors Association puts a 25,000 square foot building at 10 crew hours a night, which is 2,500 square feet per man-hour. Writing in Contracting Profits, Tong cites an average of 2,600 square feet per man-hour for medical facilities.
Margin sits on top. The same association reports typical margins of 8 to 30 percent, varying with contract size, complexity and competition, and it explicitly cautions that these metrics vary significantly by region.
How much should commercial cleaning cost?
Here is the honest answer, and it is not the one most articles give.
Published ranges for standard recurring office cleaning sit somewhere around 0.07 to 0.20 dollars per square foot, with hourly rates quoted anywhere from 30 to 75 dollars. Those figures come from vendor price guides rather than research, and the spread is the problem. A range that wide means every bid you receive will fall inside it.
A national average tells you whether a bid is insane. It does not tell you whether a bid is right.
The reason is structural. Labour is most of the price, and labour cost is set locally. A benchmark built across every market cannot speak to yours. The useful comparison is against the other bids for your specific building, with hours disclosed.
Why is one bid so much cheaper than the others?
Sometimes because it should be. Often because something has been quietly removed.
The legitimate version is real. A single-floor, low-traffic, open-plan office with hard flooring and two restrooms is genuinely fast to clean. A contractor already servicing the building next door carries no incremental drive time and shares supervision and equipment. That bid is cheap because the cost is lower.
The other versions are worth knowing by mechanism, not by vibe:
- Unrealistic production rates. Assume 6,000 square feet an hour where 2,500 is realistic and the labour line nearly halves. The same person walks the same route in half the time, so detail dusting, baseboards and high-touch surfaces quietly stop happening while trash and vacuuming continue, because those are what you would notice first.
- Understated labour burden. Pricing off the wage instead of the loaded cost, which is the gap between Tong's 75 to 80 percent and roughly 90 percent.
- Misclassified labour. Treating cleaners as independent contractors removes payroll taxes, workers' compensation and unemployment insurance from the cost base. The Department of Labor's misclassification guidance covers when that is unlawful under the Fair Labor Standards Act, and its current rule took effect on 11 March 2024. If a cleaner is hurt in your building and there is no workers' compensation, the exposure can travel.
- Consumables moved off the bid. Paper, liners and soap become a pass-through you discover in month two. Not dishonest, but it makes a side-by-side comparison meaningless.
- No supervision line. Quality inspection and management time are real hours. A bid with none is a bid where nobody checks the work, which is why those contracts hold for 60 to 90 days and then drift.
Turnover sits underneath all of it. The Bureau of Labor Statistics projects only 2 percent employment growth for the occupation between 2025 and 2035, yet about 321,800 openings a year across 2.43 million jobs. The churn is structural, and a bid built on below-market wages inherits it.
The one question that makes bids comparable
Ask every bidder for man-hours per visit and crew size, in writing.
Two bids at 2,400 dollars a month, one with 60 monthly hours and one with 32, are not the same bid. That single disclosure turns a price comparison into a scope comparison, and it is the fastest way to see which contractor actually walked your building.
Four more worth asking: are cleaners on payroll or subcontracted, can I see a certificate of insurance naming us as additional insured, are supplies included or passed through, and what are the renewal escalation and change-order terms.
None of this means the lowest bid is wrong. It means you cannot tell until the hours are on the page.
For another example of how we write, see our other writing samples.
Frequently asked
- How much does commercial cleaning cost per square foot?
- Published guides tend to quote roughly 0.07 to 0.20 dollars per square foot for standard office work, but those come from vendor pricing pages rather than research, and regional labour costs drive real variation. Treat the range as a sanity check and compare your actual bids on disclosed hours instead.
- Should I pay hourly or per square foot for janitorial services?
- Per square foot normalises bids across sites of different sizes, which helps if you are comparing several buildings. Hourly suits unpredictable or project scope. For a stable nightly routine, a flat monthly with a written scope and a change-order threshold is usually the most predictable of the three.
- How many hours does it take to clean a 10,000 square foot office?
- It depends on fixture counts, floor types and frequency rather than area alone. As an anchor, a worked example from the Building Service Contractors Association puts a 25,000 square foot building at 10 crew hours a night, or 2,500 square feet per man-hour, so a comparable 10,000 square foot space lands near 4 hours a night.
- Do commercial cleaners provide their own supplies?
- Sometimes included, sometimes an allowance, sometimes a pass-through. All three are legitimate, and all three produce a different-looking bid. Make every bidder state which one they are quoting before you compare totals.
- What certifications should a commercial cleaning company have?
- The Cleaning Industry Management Standard, administered by ISSA, certifies an organisation's management systems rather than an individual. The Global Biorisk Advisory Council, a division of the same association, accredits facilities for outbreak prevention and response. The Building Service Contractors Association also runs executive-level designations worth asking about.