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10 Critical Questions to Ask a Cleaning Company Before You Hire Them

A clean and hygienic workplace is non-negotiable. It’s the first impression you give to clients, a cornerstone of your team’s health and well-being, and a direct reflection of your company’s standards. But finding the right team for the job can feel like navigating a minefield.

You’re buried in a dozen tabs of cleaning companies, all promising sparkling results. The cleaning prices vary wildly, and it’s tempting to just pick the cheapest cleaning quote and hope for the best.

But hope isn’t a strategy.

Choosing a partner for your commercial, office or window cleaning is a decision that impacts your security, your budget, and your daily operations. To make a confident choice, you need to ask the right questions.

The 10 questions below are some of the most important things to ask any potential cleaning supplier.

Think of it as your ultimate buyer’s guide to finding a reliable, professional, and trustworthy cleaning partner.


1. Are You Fully Insured, and Can I See Proof?

Why it’s important: This is the most critical question of all. Accidents happen. A cleaner could accidentally damage expensive equipment, or someone could slip over on a freshly mopped floor. If the cleaning company doesn’t have the right insurance, you and your business could be held liable for damages or injuries.

What a good answer looks like: A professional company will immediately say “Yes” and be happy to provide a copy of their valid and up-to-date Certificate of Insurance. They should have, at a minimum:

  • Public Liability Insurance: Covers damage to your property or injury to a third party.
  • Employer’s Liability Insurance: Covers their staff if they are injured while working on your premises.

Red flag: Any hesitation, vagueness, or an unwillingness to provide documentation. A low price isn’t worth the risk of being uninsured.

2. How Do You Vet and Train Your Cleaning Staff?

Why it’s important: The people cleaning your premises will often be there after hours, with access to your entire workspace. You need to trust them completely. This question is about security, professionalism, and skill.

What a good answer looks like: A reputable company will have a robust process. Look for answers that include:

  • Background Checks: Such as DBS (Disclosure and Barring Service) checks to ensure staff have a clean record.
  • Comprehensive Training: This shouldn’t just be about how to use a mop. It should cover Health & Safety regulations (like COSHH – Control of Substances Hazardous to Health), correct use of equipment, and specific cleaning protocols.
  • Professionalism: Staff should be uniformed, identifiable, and trained in client communication and site security.

Red flag: “We hire experienced people” isn’t a detailed enough answer. If they can’t explain their vetting and training process clearly, it might not be very thorough.

3. Can You Provide Recent References from Businesses Similar to Mine?

Why it’s important: A fancy website is one thing; a track record of happy clients is another. References are proof that they can deliver on their promises. Asking for references from businesses in your sector (e.g. healthcare, retail, office space) is even better, as it shows they understand your specific needs.

What a good answer looks like: “Absolutely. We have several long-term clients in your industry and would be happy to provide their contact details for a reference.” They should be proud of their client relationships, and should have independant reviews online to back these up, too.

Red flag: “We don’t share client information for privacy reasons.” While some discretion is normal, a complete refusal to provide any references is a major warning sign.

Already feeling overwhelmed by the vetting process? This is exactly what we do. We ask these tough questions so you don’t have to. Contact us for a cleaning quote, and we will connect you with pre-vetted, trusted suppliers who meet the highest standards in the UK cleaning industry.

4. Who Provides the Cleaning Equipment and Supplies?

Why it’s important: This clarifies costs and quality. If the company provides everything, it ensures consistency and the use of professional-grade products. If you are expected to provide them, it’s an extra cost and hassle you need to factor in. It’s also a good time to ask about the products themselves: are they eco-friendly, or suitable for sensitive environments?

What a good answer looks like: “We provide all our own professional-grade equipment and eco-friendly cleaning solutions. All our electrical equipment is regularly PAT-tested for electrical safety.”

Red flag: Vague answers about who pays for what, or an expectation that you’ll provide basic supplies like bin liners and microfibre cloths without it being clearly stated in the quote.

5. Can You Provide a Detailed Breakdown of My Cleaning Quote?

Why it’s important: A single figure for cleaning prices tells you very little. A detailed quote is a sign of transparency and professionalism. It helps you understand exactly what you are paying for and allows you to compare different professional cleaning quotes on a like-for-like basis.

What a good answer looks like: A quote that is broken down into a clear specification of work, including:

  • A checklist of all areas to be cleaned (offices, kitchens, washrooms, etc.).
  • The frequency of each task (e.g. bins emptied daily, windows cleaned monthly).
  • The cost of labour and supplies.
  • Any additional charges for periodic deep cleans or specialised services.

Red flag: A quote that is just a single number with no detail. This can hide unexpected costs or lead to disputes later about what was included.

6. What Are Your Contract Terms and Cancellation Policy?

Why it’s important: You need to know what you’re signing up for. Being locked into a long, inflexible contract with an underperforming company is a nightmare. Understanding the terms from the outset protects your business.

What a good answer looks like: “We typically use a 12-month contract, but we start with a 30-day trial period to ensure you’re completely happy. After that, we require 30 days’ notice for cancellation.” A good company is confident enough in its service that it doesn’t need to trap you.

Red flag: Extremely long lock-in periods (e.g. 3 years) with no trial or break clause, or a very punitive or expensive cancellation policy.

7. How Do We Communicate Issues or Special Requests?

Why it’s important: Things change. You might have a big client meeting and need the boardroom to look extra sharp, or you might notice an area is being consistently missed during the clean. Clear communication channels are vital for a smooth working relationship.

What a good answer looks like: “You will have a dedicated Account Manager as your single point of contact. We also use a communication logbook on-site for daily notes to the cleaning team, and our office is available during business hours for any urgent queries.”

Red flag: “Just call our main number.” Without a specific point of contact, your messages can get lost, and problems can go unresolved.

8. How Do You Ensure Consistent Quality?

Why it’s important: It’s common for a new cleaning service to start strong and then let standards slip over time. You are paying for consistently high quality, not just a good first month.

What a good answer looks like: “We have regular site inspections carried out by a supervisor. Our teams work from a detailed checklist, and we conduct periodic quality audits with you, the client, to ensure you remain satisfied with our service.”

Red flag: “Our staff are professionals; they know what to do.” This suggests a lack of formal quality control systems.

9. What Is Your Process for Handling Complaints or Damages?

Why it’s important: Even with the best companies, things can occasionally go wrong. What matters is how they fix it. A company with a clear, professional process for handling complaints shows accountability and a commitment to customer service.

What a good answer looks like: “If you’re ever unhappy, please contact your Account Manager immediately. We guarantee a response within [e.g. 4 hours] and will arrange for the issue to be rectified at no extra cost. For any damages, our insurance process is straightforward, and we will guide you through it.”

Red flag: A defensive attitude or no clear process in place. If they seem surprised by the question, it means they haven’t prepared for the inevitable.

10. Do You Have Experience in My Specific Industry?

Why it’s important: The cleaning needs of a medical clinic are vastly different from those of a tech start-up or a busy warehouse. A company with experience in your sector will understand compliance, specific hygiene standards (like CQC in healthcare), and the unique challenges of your environment.

What a good answer looks like: “Yes, we clean for several other law firms/dental practices/retail stores in the area. We understand the importance of confidentiality/clinical hygiene/customer-facing presentation.”

Red flag: A generic “we can clean anything” response. While possibly true, it doesn’t show the specialist expertise that gives you true peace of mind.


The Smart Way to Get Your Cleaning Quote

Asking these ten questions will instantly separate the true professionals from the rest. It empowers you to look beyond the price and choose a commercial cleaning partner that offers reliability, security, and genuine value.

The process of finding, interviewing, and vetting multiple cleaning companies takes time. That is time you could be spending on running your own business. That’s where we come in. We’ve already asked these critical questions and built a network of closely vetted, insured, and highly-trained cleaning suppliers you can trust. We get you multiple cleaning quotes to save you the hassle, giving you a simple like-for-like set of quotes to choose from.

Let us do the hard work for you.

We’re happy to answer any questions you may have, but if you want to start with a cleaning quote, click the button below.