Choosing a Commercial Cleaning Company: Questions to Ask Before You Sign
Quick Answer: Before signing with a commercial cleaning company, ask about employee background screening and turnover, current proof of general liability and workers' compensation insurance, whether any of the work is subcontracted, how quality is inspected and documented, and whether the scope of work is written down in specific, measurable terms. A vendor who can't produce a certificate of insurance on request, or can't describe how employees are trained and supervised, is telling you how the account will run after the contract is signed. Industry turnover in commercial cleaning runs well above 100% annually, so ask directly how a prospective vendor keeps staff on your account long enough to learn your facility.
You get one proposal meeting with most cleaning vendors, and it's built to sound good. Every company on your shortlist will tell you they're reliable and experienced. The proposal looks the same from company to company: a list of services, a schedule, a price. What it doesn't show you is who's actually going to be in your building at 6 a.m. or 10 p.m., whether that person passed a background check, or what happens the week they call out sick.
Those are the details that determine whether your facility looks the same in month eight as it did in week one. Business owners usually only switch cleaning companies after a bad experience with the last one, and the pattern tends to repeat unless the vetting process changes going in. The questions below expose the difference between a vendor with a real operation behind the sales pitch and one that's simply reselling labor.
Ask About the People Who Will Actually Be in Your Building
The proposal talks about the company. This part of the conversation is about the individuals who will hold keys or an access code to your facility, often unsupervised, during hours when nobody from your staff is around.
Background Screening
Ask specifically what the screening process includes — criminal history checks, verification of prior employment, and whether drug screening is part of onboarding. "Our staff are vetted" isn't an answer. A specific process is.
Employee Turnover
Commercial cleaning has one of the highest turnover rates of any service industry, commonly cited between 100% and 200% annually. That means many companies effectively replace their entire workforce once or twice a year. High turnover means a constant stream of new people learning your building, your access points, and your standards from scratch. Ask what turnover looks like at the company and what they do to keep people on staff.
Consistency Of Assignment
Find out whether the same person or team will service your facility on a recurring basis, and what happens when your regular cleaner is out sick. A company with a real bench of trained substitutes answers this without hesitation.
Training
Ask what new employees are trained on before their first shift — cleaning technique, chemical handling, equipment operation, and site-specific protocols if your facility has them. OSHA's Hazard Communication Standard (29 CFR 1910.1200) requires that employees who work with hazardous chemicals be trained on the hazards and given access to safety data sheets, so a vendor with real training should be able to describe exactly how that requirement is met on your account.
Confirm Insurance and Financial Protection Before You Sign Anything
This is the part of the conversation where vague answers should end the discussion. If a cleaning company causes property damage, or an employee gets hurt while working in your building, the coverage in place decides whether that cost lands on the vendor or on you.
General Liability Coverage
Ask for a current certificate of insurance showing general liability limits, and confirm the policy is active, not expired. Many commercial facilities require a minimum of $1 million per occurrence.
Workers' Compensation
Confirm the vendor carries workers' compensation coverage for their employees. Without it, an on-site injury during a cleaning shift can expose your business to a claim you never signed up for.
Bonding
Ask whether the company is bonded. A janitorial bond protects you against theft or dishonest acts by an employee working in your facility — a different protection than general liability coverage.
Request The Documents, Not A Description
A vendor with current, adequate coverage can produce a certificate of insurance in a day or two. Hesitation on this one request tells you something.
Get the Scope of Work in Writing, With Specifics
A contract that simply says "nightly janitorial services" leaves too much room for interpretation. Interpretation gaps are where disputes start six months in, usually right after the honeymoon period ends.
Task List By Frequency
Ask for a written breakdown of what gets cleaned nightly, weekly, and monthly — restrooms, break rooms, floors, trash removal, high-touch surfaces — rather than a general summary.
Areas And Square Footage
Confirm the scope names the specific areas covered, so there's no ambiguity about whether a storage room, loading dock, or shared hallway is included.
Quality Standards
Ask how "clean" gets defined and measured for your account. A vendor with a documented inspection process — even something as simple as a walkthrough checklist reviewed with you monthly — is showing you they manage to a standard, not just a schedule.
Ask How Problems Get Handled
Every cleaning relationship hits a rough patch eventually. A missed area, a supply that ran out, a night the crew showed up late. What separates a good vendor isn't the absence of problems. It's a clear, fast process for fixing them.
Point Of Contact
Ask who you contact when something goes wrong, and how fast they respond. A named contact with a stated response window beats a general customer service line every time.
Subcontracting
Ask directly whether any part of the work gets subcontracted to another company. If so, ask how that subcontractor is vetted and insured. This matters because the background checks and insurance verification you did on the primary vendor mean little if part of the work quietly passes to a company you never reviewed.
Contract Terms
Read the termination clause before you sign, not after a problem shows up. Understand the notice period required to end the agreement and whether the contract renews automatically.
TIP: Ask every vendor on your shortlist the same questions, in the same order, and write down the answers as you go. A side-by-side comparison makes it a lot easier to spot the vendor who's guessing versus the one with real answers.
WARNING: Do not assume a nightly-only program keeps a high-traffic building presentable through the afternoon. If your space fills with people by mid-morning, overnight cleaning is often undone hours before closing, and visitors see the worst of it.
Look Past the Sales Pitch to the Operation Behind It
A polished proposal and a well-run cleaning operation aren't the same thing. A good sales conversation can mask a thin operation underneath it. Ask to speak with whoever manages the account day to day, not just the person who sold it to you.
Ask how long the company has served facilities similar in size or type to yours. A business that's only cleaned small offices may not be set up for a warehouse, medical facility, or retail environment with different traffic patterns and different compliance needs.
Certification through recognized industry programs, such as CIMS through ISSA, the trade association for the cleaning and facility solutions industry, can also be a useful signal. It requires an independent, third-party assessment of a company's quality systems, training, and management practices — meaning a certified vendor has already been evaluated against an outside standard, not just describing itself in its own words.
Frequently Asked Questions
How many references should I ask for from a commercial cleaning company?
Request at least two to three current client references, ideally from facilities similar in size or industry to yours. When you contact them, ask specifically how the vendor handles problems and whether service quality has stayed consistent over time, not just how it looked in the first few weeks.
Is it a red flag if a cleaning company can't provide a certificate of insurance right away?
Yes. A vendor with active, adequate coverage should be able to produce a current certificate of insurance within a day or two of the request. A long delay, an expired policy, or a refusal to share the document is a sign the coverage may not be what was described.
What's the difference between insured and bonded?
Insurance — specifically general liability and workers' compensation — covers property damage or employee injury. Bonding is a separate financial protection that covers theft or dishonest acts by an employee working in your facility. A reputable commercial cleaning company carries both.
Should I choose a cleaning company based on price alone?
No. A quote well below competitors often reflects thinner staffing, less training, or gaps in insurance coverage, and those tend to surface as service problems later. Weigh price alongside insurance, training, and how clearly the scope of work gets defined.
How long should a first contract with a new cleaning company run?
A shorter initial term, often one year with a defined renewal and termination process, gives you a full cycle to judge consistency before committing longer. Review the termination clause and notice period carefully before signing, regardless of contract length.
What questions should I ask about employee turnover specifically?
Ask the vendor directly what their annual turnover rate is and what they do to retain staff, since industry turnover regularly runs above 100% annually. A company that tracks its number and has a real plan for consistent staffing is more likely to keep the same trained team on your account for the long haul.
A Better Cleaning Partnership Starts With Better Questions
The right commercial cleaning company should be able to explain how its people are screened, trained, supervised, and supported without relying on vague promises. It should also provide current insurance documentation, define every cleaning responsibility in writing, and have a clear process for addressing missed work or changing needs. These details matter because consistent facility care depends on the operation behind the contract, not simply the price or presentation of the proposal. Careful questions at the beginning can prevent costly misunderstandings later.
For more than 35
years, Commercial Maintenance Specialist
has served businesses in Charlotte, NC with an approach built around trained staff, defined cleaning standards, and dependable account management. The goal is not simply to complete a checklist, but to maintain a consistent environment that meets the expectations established with each facility. When evaluating any commercial cleaning provider, look beyond the sales pitch and focus on the systems, people, documentation, and accountability that will shape your experience long after the contract is signed.
