Access hours change the labor cost
Retail and office properties often require work outside business hours. Price that as a percentage premium on labor, since the whole crew works the premium hours, not just a flat surcharge.
Free commercial pressure washing bid calculator
Commercial Pressure Washing Bid Calculator — built for parking lots & storefronts.
Turn parking lot, sidewalk, or storefront square footage into a full commercial pressure washing (power washing) bid with labor, equipment rental, after-hours premium, contingency, and margin — not just a per-square-foot guess.
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Commercial pressure washing bid calculator
Build a full-cost bid
Use your own production rate and costs. Copy the result into your proposal or share a client-ready link.
Recommended bid
Total bid price$0$0.00 per sq ft
Labor hours0 hrs
Crew duration0 hrs
Direct cost$0
Expected profit$0
Bid breakdown
Labor (with after-hours premium)$0
Equipment rental$0
Chemicals$0
Overhead$0
Contingency$0
Profit$0
Use the result as a planning baseline. Confirm access hours, drainage/EPA runoff rules, striping repaint coordination, and local pricing before submitting a bid.
Worked example
Commercial: 18,000 sq ft strip mall parking lot
Scope: An 18,000 sq ft asphalt parking lot with moderate gum, tire marks, and grease spots near the loading zone. The property manager requires the work done after 10pm to avoid disrupting tenant businesses, and the lease requires runoff to be contained rather than drained to the storm sewer.
Production and labor: At a 2,400 sq ft/hr rate with a surface-cleaner attachment and a 1.25x condition multiplier for the gum and grease spots, the job takes about 9.4 labor hours. A 3-person crew finishes on site in about 3.1 hours, which fits inside a single overnight window. The 20% after-hours premium applies to the full labor cost, not just a flat trip fee, since the entire crew is working outside normal daytime hours.
Equipment and chemicals: The surface-cleaner attachment and containment/recovery equipment for the runoff requirement are budgeted at $220 for the job, with $140 in degreaser and cleaning chemical for the full lot.
Overhead, contingency, and margin: A 16% overhead rate covers vehicle, insurance, and office costs. An 8% contingency covers items that only appear once the crew is on site, such as an unexpected oil spill or a section requiring hand-scraping. A 22% target margin is applied last, on top of direct cost, overhead, and contingency combined.
Plug 18,000 sq ft, a 2,400 sq ft/hr rate, the moderate condition level, a 20% after-hours premium, and the equipment and chemical costs above into the calculator to see the resulting bid price and per-square-foot rate for this scenario.
Commercial bidding guide
What separates a commercial bid from a residential quote
Runoff and drainage rules are a real compliance cost
Many municipalities and property leases require wastewater containment or recovery rather than allowing runoff into storm drains, especially near grease traps or loading docks. Budget the containment equipment, not just the wash.
Contingency covers what a walkthrough can't catch
Gum removal, oil spill remediation, or a striping repaint coordination requirement often only becomes clear once the crew is on site. A contingency percentage protects margin without re-negotiating mid-job.
Equipment cost is real, not incidental
Surface-cleaner attachments, hot water trailer units, and containment equipment have real rental or amortized ownership cost per job and should be priced as their own line item.