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Commercial cleaning and office cleaning in Denver
Denver's commercial cleaning market runs from one-person crews to Front Range companies with hundreds of employees. The contractors listed here clean offices, medical practices, warehouses, schools and retail space across the metro, from Downtown and the Tech Center to Aurora, Lakewood, Littleton, Westminster and Boulder. Every listing has been checked for commercial work: we read each company's Google profile and website and leave out businesses that only clean homes. Each profile shows what the contractor states about insurance, staff screening, contracts and quality control, which of those facts come from public records, and what recent Google reviewers say. Use the filters to narrow the list, then compare two or three contractors against the same written scope.
- Contractors listed
- 32
- State they're insured, of those with website data
- 70%
- Offer a free walkthrough
- 43%
- Median janitor wage
- $18.67/hr
Contractors in Denver
Sorted with fully checked profiles first. 2 franchise locations, 1 broker (outsource the cleaning) are labeled. Data checked October 2026.
- Denver Cleaning Service Company
Denver, Woman-owned
Recurring janitorial, Post-construction cleaning, Carpet cleaning, Window cleaning, Disinfection
4.8 on Google
705 reviews7 checklist answers found - JAN-PRO Cleaning & Disinfecting in Colorado
Denver, Franchise
Recurring janitorial, Floor care (strip, wax, burnish), Carpet cleaning, Window cleaning, Disinfection
4.8 on Google
400 reviews10 checklist answers found - CCS Facility Services
Denver
Recurring janitorial, Post-construction cleaning, Floor care (strip, wax, burnish), Carpet cleaning, Window cleaning, Disinfection, Day porter
3.6 on Google
153 reviews18 checklist answers found - Big League Clean
Denver
Recurring janitorial, Post-construction cleaning, Floor care (strip, wax, burnish), Carpet cleaning, Window cleaning, Disinfection, Day porter
5.0 on Google
84 reviews15 checklist answers found - Metro Maintenance, Inc.
Denver
Recurring janitorial, Post-construction cleaning, Floor care (strip, wax, burnish), Carpet cleaning, Window cleaning, Disinfection, Day porter
5.0 on Google
78 reviews8 checklist answers found - Down Dirty ‘N’ Done
Denver
Recurring janitorial, Post-construction cleaning, Carpet cleaning, Window cleaning, Disinfection
5.0 on Google
74 reviews10 checklist answers found - 5.0 on Google
36 reviews8 checklist answers found - Colorado Commercial Services Inc
Denver
Recurring janitorial, Floor care (strip, wax, burnish), Carpet cleaning, Window cleaning, Disinfection
3.9 on Google
18 reviews11 checklist answers found - Maintenance Resources Inc.
Denver
Recurring janitorial, Post-construction cleaning, Floor care (strip, wax, burnish), Carpet cleaning, Window cleaning, Disinfection, Day porter
4.6 on Google
14 reviews9 checklist answers found - Colorado Cleaning Professionals of Metro Denver
Denver
Recurring janitorial, Post-construction cleaning, Floor care (strip, wax, burnish), Carpet cleaning, Window cleaning, Disinfection
5.0 on Google
10 reviews13 checklist answers found - Lottus Cleaning Services
Denver, Latino-owned, Woman-owned
Recurring janitorial, Post-construction cleaning, Floor care (strip, wax, burnish), Carpet cleaning, Window cleaning, Disinfection
5.0 on Google
8 reviews9 checklist answers found - One Source Denver
Denver, Broker: outsources cleaning
Recurring janitorial, Floor care (strip, wax, burnish), Carpet cleaning, Window cleaning, Disinfection, Day porter
5.0 on Google
8 reviews5 checklist answers found - CLEANING SERVICE EXPERT
Denver, Latino-owned, Woman-owned
Recurring janitorial, Post-construction cleaning, Disinfection
5.0 on Google
5 reviews9 checklist answers found - Flagship Facility Services
Denver
Recurring janitorial, Post-construction cleaning, Floor care (strip, wax, burnish), Carpet cleaning, Window cleaning, Disinfection
3.0 on Google
4 reviews5 checklist answers found - 5.0 on Google
1 reviews4 checklist answers found - Colorado Fresh Cleaning Services LLC
Post-construction cleaning, Carpet cleaning, Window cleaning, Disinfection
4.9 on Google
27 reviews8 checklist answers found - 5.0 on Google
14 reviews7 checklist answers found - 5.0 on Google
13 reviews4 checklist answers found - Terminal Cleaning Services - Denver
Floor care (strip, wax, burnish), Disinfection
5.0 on Google
7 reviews3 checklist answers found - 3.0 on Google
4 reviews2 checklist answers found - 5.0 on Google
4 reviews3 checklist answers found - 5.0 on Google
3 reviews3 checklist answers found - 5.0 on Google
2 reviews0 checklist answers found - 5.0 on Google
2 reviews5 checklist answers found - Z's Home & Office Cleanology
Recurring janitorial, Disinfection
5.0 on Google
2 reviews8 checklist answers found - 5.0 on Google
2 reviews0 checklist answers found - 5.0 on Google
2 reviews3 checklist answers found - Anchor Janitorial
Denver
5.0 on Google
1 reviews1 checklist answers found - Alliance Maintenance Inc
Denver
Recurring janitorial, Floor care (strip, wax, burnish), Carpet cleaning, Day porter
5.0 on Google
1 reviews3 checklist answers found - Simply Clean
Denver
5.0 on Google
1 reviews1 checklist answers found - Total Access Solutions
Denver
No Google reviews yet0 checklist answers found - No Google reviews yet0 checklist answers found
What commercial cleaning costs in Denver
Most Denver contractors quote after a walkthrough, because price depends on square footage, how often you need cleaning, and what is included. These figures help you sanity-check a quote:
- Median janitor wage in the Denver-Aurora-Centennial, CO metro: $18.67 an hour (mean $20.26), with 19,460 janitors employed. Source: BLS OEWS May 2025, SOC 37-2011 Janitors and Cleaners.
- Professional floor cleaning in Denver "typically ranges from $0.25 to $0.75 per square foot for standard services." Published by Denver Cleaning Service Company.
- A monthly disinfection subscription for a business up to 5,000 square feet: $120 per month, with a surcharge for larger spaces. Published by Flanagan Cleaning Services.
Colorado rules buyers should know
Sales tax
Janitorial service charges are not subject to Colorado sales tax; consumables such as soap, paper towels and toilet tissue billed as separate items are taxable. Source
Workers' compensation
Colorado businesses with at least one employee must carry workers' compensation or file a rejection of coverage. The state offers lookups for active policies and for rejections. Check coverage
Questions buyers ask about commercial cleaning in Denver
How much does commercial cleaning cost in Denver?
It depends on square footage, frequency and scope, so most contractors quote after a free walkthrough. A useful cross-check is labor cost: the median janitor wage in the Denver metro is about $18.67 an hour (BLS, May 2025), and contractors add supervision, supplies, insurance and overhead on top. Ask every contractor to quote the same written scope so the numbers are comparable.
Do I pay sales tax on janitorial services in Colorado?
No. Colorado does not tax the janitorial service itself. Consumables such as soap, paper towels and toilet tissue are taxable if the contractor bills them as separate items.
Does a Colorado cleaning company need workers' compensation insurance?
Colorado businesses with at least one employee must carry workers' compensation or file a rejection of coverage. You can check a contractor's status on the Colorado Division of Workers' Compensation website before you sign.
How do you choose which contractors to list?
We start from Google Maps listings for commercial cleaning searches in the metro, then check each business's profile and website to confirm it does commercial work. Residential-only cleaners, restoration companies, staffing agencies and suppliers are not listed. Franchise locations and cleaning brokers are labeled as such.
What should I ask before signing a cleaning contract?
Ask for a written scope with tasks per visit, a certificate of insurance, how staff are screened and supervised, who covers absences, how quality is checked, the response time for complaints, and the contract length, renewal and cancellation terms. Our buyer's checklist on each profile shows which of these the contractor already answers publicly.