How to choose a commercial cleaning company (and the red flags)
The questions facility managers wish they had asked, the red flags behind most cleaning horror stories, and a checklist you can use on any quote.
Short answer: Judge a commercial cleaner on proof, not on the lowest number. Ask how long their clients have stayed, how they handle after-hours issues, and whether their clients would re-sign. Then ask for the paperwork: insurance certificate, police checks, a written scope and a named contact. A real operator hands all of it over without hesitation.
The four questions that actually predict the result
Most cleaning companies sound identical in a sales meeting. The questions below cut through, because they are about track record rather than promises.
How long have your clients been with you? Cleaning is easy to start and hard to sustain. A company whose clients stay for years has solved the hard part: keeping the standard up after month one.
How do you handle after-hours issues? Cleaning happens when your building is empty. Ask what happens if an alarm is tripped, a door is left unlocked, or a clean is missed. You want a procedure, not a shrug.
How fast do you respond when something is wrong? Every cleaner misses something eventually. The difference between a good company and a bad one is whether the miss is fixed in a day or argued about for a month.
Would your clients sign with you again? Then check. Ask for references from facilities like yours, and ask those references the same question directly.
Here is what the answer sounds like when a company passes that test. One office manager told us: "I had spent years chasing our old cleaner to fix the same things over and over. I haven't had to follow up on anything since we switched, and my own team have noticed the office is cleaner."
The red flags
The horror stories in commercial cleaning are boringly consistent. The company that let them happen almost always showed the same warning signs before the contract was signed.
No police checks. Strangers with keys and alarm codes, unsupervised in your building at night. This is not a corner anyone should cut.
No insurance certificate. If the certificate of currency for public liability insurance does not arrive when you ask, assume the cover does not exist.
A price-led pitch. When the opening line is the cheapest rate in town, the money has to come from somewhere. It comes from hours or from wages, and either way it comes out of your clean.
No documented scope. "General cleaning" is not a scope. Without task-level detail, room by room, the cleaner decides what your money buys, and quality is whatever they say it is.
No named contact. If you cannot name the person who answers when a clean is missed, nobody owns the problem and it will not get fixed.
✕The pattern behind the horror stories
A cheap headline rate, no police checks, no insurance certificate on request, a vague scope and no named contact. This is the profile of the company whose clean fades after month one, whose cleaner changes every few weeks, and who leaves the front door ajar with the alarm off. Any two of these together should end the conversation.
✓What a real operator looks like
Police-checked and insured staff, a certificate of currency sent the same day you ask, a written scope priced from a site walkthrough, a named contact who answers, and no lock-in contracts. Add a documented system like our 5-Step V.I.P method that holds the standard when nobody is watching. You should not have to chase any of it.
The ask-exactly checklist
Take this list to every company on your shortlist. It takes five minutes and it filters out most future problems before they cost you anything.
Ask for these, in writing, before you sign
The certificate of currency for public liability insurance, with dates and the business name matching the quote.
Police-check confirmation for every cleaner who will work on your site.
A written scope: tasks and frequency, room by room, priced from a site visit.
A named account contact, plus how after-hours issues are handled and how fast.
References from similar facilities, and whether those clients re-signed.
A gym owner described what a proper process feels like. "Our last cleaners were mediocre and I was tired of managing them myself. The walkthrough this time was properly professional, I could point out exactly what mattered and know it would actually be covered."
What good looks like after you sign
Choosing well is only half the job. The company you pick should make the standard visible without you chasing it. That means a documented checklist for every visit, live GPS tracking of cleaner attendance, a client portal with real-time updates, and a rating system so you can score every clean. And the guarantee should carry the risk, not you. Ours is simple: no lock-in contracts, and no payment until you are 100% happy.
Common questions
What should I ask a commercial cleaning company before signing?
Ask four things. How long have their clients stayed, how are after-hours issues handled, how fast do they fix problems, and would their clients sign again? Then ask for the paperwork: the certificate of currency for public liability insurance, police-check confirmation for the cleaners, a written scope, and a named account contact.
What are the red flags when choosing a commercial cleaner?
No insurance certificate on request, no police checks, a pitch that leads with price instead of process, no documented scope, and no named contact you can call when something goes wrong. Any one of these is a warning. Two or more is the pattern behind most cleaning horror stories.
Do commercial cleaners need police checks?
Yes, in practice they do. Cleaners work in your building after hours with keys and alarm codes, often unsupervised. A professional operator police-checks every cleaner and will confirm it in writing. If a company hesitates on this question, that hesitation is your answer.
How do I verify a cleaning company is actually insured?
Ask for the certificate of currency for their public liability insurance. Check the dates and the business name match the company quoting you. A real operator sends it the same day without fuss. Never accept a spoken promise in place of the certificate.