Post-Construction Cleaning Pricing Calculator Guide
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Ask five post-construction cleaning operators how they price a job and you'll get five different answers, and at least two of them will be guessing. That's a problem in a category where the variance between a well-priced job and a badly-priced one can run 2x or more on the same square footage. The variable that actually drives cost isn't square footage at all. It's soil load, surface complexity, and how many separate trades left their fingerprints on the space. A calculator only works if it's built around those variables rather than a flat rate per square foot.
This guide breaks down the inputs that belong in a real post-construction pricing model, shows how they interact, and walks through worked numbers so you can sanity-check your own bids against a defensible structure instead of a gut-feel number.
The Three Numbers a Calculator Actually Needs
Every credible post-construction pricing model starts with square footage, but square footage alone tells you almost nothing about labor hours. The second input is soil classification: light (paint touch-up spaces, minor trade traffic), moderate (standard tenant improvement with multiple trades), or heavy (ground-up construction with concrete dust, extensive glass, and multiple finish types). The third is scope depth: are you pricing rough clean only, final clean only, or the full three-phase cycle from rough clean through pre-occupancy touch-up.
A rough clean on a light-soil space might run as low as $0.05 per square foot. A full final clean on a heavy-soil Class A office build can reach $0.50 per square foot or more once glass, millwork, and restroom detail work are factored in. Treating every job as a single blended rate is how operators either scare away a light-soil client with an inflated number or lose money on a heavy-soil job priced like a simple sweep-and-mop.
| Soil Classification | Typical Scenario | Final Clean Rate |
|---|---|---|
| Light | Minor tenant improvement, cosmetic trades only | $0.15–$0.25 per sq ft |
| Moderate | Standard TI with multiple trades, some concrete work | $0.25–$0.40 per sq ft |
| Heavy | Ground-up build, extensive concrete and glass | $0.40–$0.75 per sq ft |
Building the Calculation From the Bottom Up
Start with production rate rather than price. A single technician on final clean covers roughly 500 to 1,200 square feet per hour depending on soil load and surface complexity; call it 800 square feet per hour for a moderate-soil job as a working average. Divide total square footage by that rate to get technician-hours, then multiply by your fully loaded labor cost (wages plus payroll tax, workers' comp, and overhead allocation) to get labor cost. Add materials, typically 3 to 6 percent of labor cost for post-construction work since consumables like microfiber, glass cleaner, and floor finish are relatively cheap per square foot compared to labor. Add your margin target, usually 25 to 40 percent depending on market competitiveness and relationship strength with the GC.
Worked example: a 15,000 square foot moderate-soil office final clean. At 800 square feet per hour, that's roughly 18.75 technician-hours. At a fully loaded rate of $28 per hour, labor cost lands near $525. Add 5 percent for materials (about $26) and a 30 percent margin, and the quoted price comes out around $715, or roughly $0.048 per square foot for labor and materials before margin. That figure lands comfortably inside the $0.25 to $0.40 per square foot moderate-soil range once you account for supervision time, equipment costs, and the fact that a single technician rarely works alone on a job this size.
Where Operators Under-Price Without Realizing It
Windows are the most common miss. A space with floor-to-ceiling glass or heavy storefront glazing takes dramatically longer per square foot than a similar space with standard punched windows, and a calculator that doesn't separate glass linear footage from floor square footage will consistently under-price glass-heavy buildings. Restroom density is the second miss: a floor with six restrooms takes longer than a floor with two, regardless of total square footage, because fixture-level detail work doesn't scale linearly with area.
The third miss is travel and mobilization time on multi-day projects. A 20,000 square foot job needing 6 to 10 technicians over 2 to 3 days carries real coordination overhead (supervision, staging, equipment transport) that a pure per-square-foot rate tends to absorb into margin rather than pricing explicitly. Building a mobilization line item into the calculator, even a flat $150 to $400 depending on crew size, keeps that cost visible instead of eating into profit silently.
Touch-Up Pricing Deserves Its Own Line
Touch-up, the pre-occupancy pass performed 24 to 72 hours before the walkthrough, should never be folded into the final clean quote. It runs $0.05 to $0.15 per square foot on its own and covers a second carpet vacuum, re-cleaning glass entry doors, and spot work on contractor traffic marks. Pricing it separately gives the GC a clear milestone to approve and gives you a natural point to invoice before the project fully closes out, rather than waiting on one combined payment that can get held up in a larger dispute.
| Phase | Production Rate (sq ft/hr/tech) | Price Range |
|---|---|---|
| Rough clean | 2,000–4,000 | $0.05–$0.15/sq ft |
| Final clean | 500–1,200 | $0.15–$0.50/sq ft |
| Touch-up | 1,500–3,000 | $0.05–$0.15/sq ft |
Why the Walkthrough Still Beats Any Calculator
No calculator replaces putting eyes on the site before quoting. Construction photos from a GC show you what a camera can capture, not the actual texture of the soil, the type of adhesive residue on the floor, or whether the "clean" site in the photo is hiding silica dust from concrete work that will slow every technician down. Treat the calculator as a way to structure and sanity-check the number a walkthrough generates, not as a replacement for the walkthrough itself. Operators who quote off photos alone are the ones who end up eating labor overruns on heavy-soil jobs priced like moderate ones.
Use the Opora Cleaning Bid Calculator to model labor hours, materials, and margin by phase and soil classification.
Frequently Asked Questions
Should sales tax be built into the per-square-foot rate or itemized separately?
Itemize it. State and local tax treatment of cleaning services varies, and folding tax into your rate makes your pricing harder to compare against a competitor's itemized quote and harder to adjust if the jurisdiction's rate changes mid-contract.
How much should equipment depreciation factor into the calculator?
For most operators, allocate equipment cost as a small per-job overhead line (often 2 to 4 percent of labor cost) rather than trying to depreciate a specific HEPA vacuum or floor machine against a single project. The math gets complicated fast and rarely changes the quoted price meaningfully.
Is it normal for GCs to push back on itemized phase pricing?
Some will, especially on smaller projects where they'd prefer one number. Itemizing protects you regardless. If scope changes mid-project, you have a documented basis for a change order instead of an argument over a lump sum.
What margin should a new operator target on a first post-construction job with an unfamiliar GC?
Consider pricing at the lower end of your normal margin range, 20 to 25 percent, to win the relationship, then move to a normal 30 to 40 percent margin on repeat work once the GC has seen your quality and reliability.
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Opora editorial sources from BLS OEWS wage tables, ISSA-447 production rates, NCCI workers' compensation classifications, EPA List N, OSHA 29 CFR standards, and primary state regulatory filings. We don't recycle blog posts — we audit primary documents.
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