How to Hire a Commercial Cleaning Company

Hiring a commercial cleaning company is a decision you live with every single business day. The right partner keeps your office presentable, your restrooms stocked, and your building's image intact without you thinking about it. The wrong one generates complaints, missed nights, and awkward conversations about why the trash is overflowing again. The good news is that vetting a cleaning company is not complicated once you know what to check. This guide gives you the practical checklist: insurance and bonding, references, scope specs, walkthrough quality, and the red flags that tell you to keep looking.

Start with insurance and bonding

This is the non-negotiable first filter. A commercial cleaning company works inside your space, often after hours and unsupervised, handling keys and access. Before anything else, confirm they carry:

• General liability insurance. This protects you if a cleaner damages property or someone is injured. Ask for a certificate of insurance, and for larger contracts, ask to be named as an additional insured. If you are new to COIs, our guide on certificates of insurance for cleaning vendors explains what to look for.
• Workers compensation. If a cleaner is hurt on your property and the company does not carry workers comp, that liability can land on you. This coverage is required in Illinois for companies with employees.
• Janitorial bonding. A bond protects you against theft by the cleaning staff. Because crews often work alone and after hours, bonding matters more in this industry than in most.

A reputable company provides all three without hesitation. Hesitation, or an offer to "email it later" that never arrives, is your answer.

Ask for references and actually call them

Any company can list happy clients on a website. Ask for two or three current commercial references with buildings similar to yours in size and type, then call them. Useful questions:

• How long have they cleaned for you, and has quality held up over time?
• How do they handle complaints or a missed night?
• Is the same crew consistent, or does it turn over constantly?
• Would you hire them again?

Consistency is what you are really probing for. Plenty of companies clean well the first month. The ones worth hiring are still cleaning well a year later, with a stable crew that knows your building.

Demand a detailed scope of work

The most common reason cleaning contracts sour is a vague scope. If the agreement just says "clean the office," you and the company will disagree about what that means the first time a task is skipped. A real scope breaks work into frequencies:

• Nightly or per-visit: trash, vacuuming, restroom service, kitchen wipe-down, surface cleaning, restocking
• Weekly: dusting, glass, partition wiping, detailed restroom work
• Monthly and quarterly: high dusting, vent wiping, floor detailing, baseboards

A company that hands you a specific task list broken out this way is telling you they run an organized operation. Our office cleaning checklist is a good template to compare their scope against. If a bidder cannot produce a task list, they are cleaning by improvisation, and you will feel it.

Judge the walkthrough

A serious commercial cleaning company insists on walking your space before quoting. The walkthrough tells you as much about them as it tells them about your building. Watch for whether they:

• Take real measurements and note square footage
• Ask about your headcount, traffic patterns, and pain points
• Look at restrooms, kitchens, and floor types, not just the open area
• Ask about access, security, and after-hours procedures
• Point out things you did not mention, like a floor that needs periodic waxing

A company that quotes a recurring contract sight-unseen over the phone is guessing, and a guessed price becomes a change order or a corner cut later. The walkthrough is also where honest pricing comes from; for context on what fair rates look like, see commercial cleaning rates per square foot.

Understand the contract structure

Commercial cleaning agreements vary, and you want to know what you are signing:

• Term and cancellation. Look for a reasonable out. A 30-day cancellation clause is standard and fair; a long lock-in with no exit for poor performance is a warning sign.
• What is included versus billed extra. Consumables (paper, soap, liners), floor stripping and waxing, carpet extraction, and window washing are often separate. Know which.
• Price adjustment terms. Understand what triggers a price change, such as added square footage or increased frequency.
• Quality assurance. Ask how they inspect their own work. Good companies do periodic supervisor walkthroughs and have a clear way for you to report issues.

If you are weighing an ongoing janitorial relationship against project-based cleaning, janitorial vs commercial cleaning explains how the contract structures differ.

Red flags to walk away from

Most cleaning companies in the Chicago area do honest work. These are the signs a particular one is not worth the risk:

• No proof of insurance or bonding, or excuses about providing it
• A price far below every other bid, which almost always means something was left out of the scope or the staff is uninsured
• No written scope of work
• High-pressure, sign-today tactics. A fair price is fair next week too
• Vague answers about who actually does the cleaning, especially heavy use of unvetted subcontractors
• No local references they will let you contact

The bottom line

Hiring well comes down to five things: confirm insurance, workers comp, and bonding; call real references; demand a detailed written scope; insist on a proper walkthrough; and read the contract for cancellation and inclusions. Do those, and you filter out the companies that create headaches before they ever touch your building. If you inherit a bad vendor, our guide on switching commercial cleaning companies covers a clean exit.

Ready to see how a professional vetting process feels from the other side? Request a Free Walkthrough & Quote through our estimate form. We will measure your space, hand you an itemized scope, and provide proof of insurance and bonding up front. Learn more about our commercial cleaning and janitorial services programs across Chicago.