How do you choose a commercial cleaning company?

01

Start with your workplace, not a stock answer

Choose the company that can explain how your site will be staffed, checked and supported, not simply the one with the glossiest quote. Ask for a site-specific plan, relevant evidence and a clear response when standards slip.

You are buying a result for colleagues, visitors and the people responsible for the building. Begin with what a good day should look like: the spaces are ready when needed, essential supplies are available, access works and nobody has to chase routine tasks. Then note the facts that could change the answer, including occupancy peaks, layout, working hours, security, materials and recent complaints.

This approach keeps the conversation useful. It also protects your budget because suppliers can spend time where it makes a visible difference instead of applying the same frequency or method everywhere. If information is uncertain, label it as an assumption and agree when it will be checked after the service starts.

02

Four points to decide before asking for a quote

Use these points as prompts for a short internal conversation. You do not need a perfect tender document, but a shared view prevents different stakeholders asking for different things after quotes arrive.

1. relevant experience with buildings like yours. Write down the current position and the result you want. This gives suppliers a real situation to answer, instead of inviting a generic promise.
2. recruitment, training and absence cover. Use evidence from the building, such as occupancy, complaints, access records or stock use. A small amount of reliable information improves the decision.
3. supervision, reporting and complaint handling. Ask who owns this after the service starts and how you will see that it is working. Responsibility should not disappear between the quote and delivery.
4. insurance, safety documents and contract clarity. Agree any site-specific wording before signing. If it matters to your team or budget, it should be clear enough for another manager to understand later.

Finish this step by separating requirements from preferences. Requirements protect the building or keep it usable; preferences can be priced as options. That distinction helps you make sensible savings without quietly removing something essential.

03

A practical checklist you can use

Copy these questions into your site notes or supplier brief. Add the name of the person confirming each answer and keep the completed version with the final cleaning plan.

1. Invite suppliers to visit the site. Record the answer beside the relevant room, task or contract clause so it can be checked later.
2. Give every bidder the same information. Ask each shortlisted company to respond in the same format. Consistent answers are much easier to compare.
3. Score service delivery separately from price. Give the item an owner and a sensible review point. An unowned checklist quickly becomes an old document.
4. Speak to relevant current or recent clients. Keep supporting evidence with the final cleaning plan, not in a separate email chain that the site team cannot find.
5. Meet the person who will manage the account. Test the arrangement during the first month and correct any assumption while the change is still fresh.
6. Read exclusions, notice and change-control terms. Review the result with the people who use the space as well as the people who bought the service.

When a supplier suggests a different approach, ask them to explain the benefit, any trade-off and how you will know it worked. Good advice should make your decision clearer, not depend on unexplained terminology.

04

Compare evidence, ownership and the full service

Give shortlisted suppliers the same building information and enough time to ask questions. Compare the people and process behind the answer: who manages the start, who trains or briefs the cleaners, who checks the work, who covers absence and who has authority to put a problem right. Ask for an example or blank document where that would make an answer easier to test.

Price still matters, but compare it beside hours, frequencies, occasional work, supplies, equipment, reporting and exclusions. An apparently cheaper quote may simply contain less. Record clarifications and make sure important promises reach the final agreement rather than remaining in a sales email.

05

What to avoid

Also avoid scoring a polished quote more highly than a workable delivery plan. The useful detail is often unglamorous: realistic cleaning time, secure access, named contacts, cover arrangements, readable site instructions and a review date. These are the parts that determine whether your colleagues experience a dependable service.

If a claim sounds broad, ask what it means at your site and what evidence you will receive. This is particularly important for environmental, safety, response-time and quality claims. Honest site-specific wording is more valuable than a universal promise that cannot be supported.

06

Turn the answer into a simple action plan

1. Write the outcome. Describe what colleagues should experience when the arrangement works.
2. Collect the site facts. Record occupancy, areas, access, timing and existing concerns.
3. Use one brief. Give every shortlisted supplier the same core information.
4. Resolve assumptions. Ask questions before you compare final prices.
5. Put it in writing. Carry agreed tasks, responsibilities and checks into the cleaning plan.
6. Review the start. Check early, correct gaps and update the plan when the building changes.

If you would like help applying this to your office, request a free Mainstream Cleaning site visit. We will look around, listen to what matters and provide a clear plan and price. You can also read about our commercial cleaning service before arranging a visit.

Common questions

Commercial cleaning: FAQs