How to Choose the Right Commercial Cleaning Company
The right commercial cleaning company is the provider that can turn your required standard into a written specification, staff it reliably, manage the risks, supervise performance and correct problems without making you manage the cleaning service on its behalf.
Price is not the first filter. Evidence is.
A polished proposal can tell you what a cleaning company wants you to believe. Due diligence tells you how the contract is likely to perform after mobilisation. This guide shows business owners, facilities managers and property managers what to verify before appointing a commercial cleaning contractor.
What should you look for in a commercial cleaning company?
Look for evidence in seven areas: a site-specific cleaning specification, appropriate insurance and compliance, properly recruited and trained staff, effective supervision and quality control, reliable absence cover, relevant client references, and a transparent quotation and contract. Compare these points before comparing headline hourly rates. A provider that cannot explain how the service will be staffed, checked and recovered when something goes wrong is asking you to buy a promise rather than a managed service.
This page is about due diligence and evidence: what you should examine before approving a contractor. If you want a chronological procurement sequence, use our 8-step guide to looking for a cleaning company.
The six principles worth remembering before you shortlist anyone
Compare scope before price
Two quotes are not comparable until the tasks, frequencies, labour allocation, supervision and periodic work are comparable.
Ask for evidence, not adjectives
“Reliable”, “professional” and “trusted” are marketing words. Insurance certificates, specifications, inspection processes and references are evidence.
Vetting must fit the role
Right-to-work checks are an employer responsibility. DBS eligibility and the appropriate level of check depend on the role and environment.
Supervision is part of the product
A cleaner can only deliver consistently when somebody owns training, inspections, feedback, absence cover and corrective action.
Contract clarity prevents disputes
The agreement should state what is included, what is excluded, how changes are approved and what happens when standards are missed.
The cheapest quote can cost more
An under-resourced service creates complaints, management time, missed work and frequent retendering. Value comes from sustainable delivery.
Start with the standard your premises needs
Many procurement problems begin before the first cleaning company is contacted. The buyer asks for “daily cleaning” or “three hours every evening” without first defining the result that those hours are supposed to achieve.
A contractor can only quote intelligently when it understands the property, the people using it and the standard expected after the clean. A professional office with twenty employees has a different requirement from a high-footfall retail unit, a multi-tenant building, a school, a clinic or a luxury customer-facing environment.
Your starting brief should therefore describe the operating reality of the premises, including:
Property & Usage
- Floor area and layout
- Number of staff, visitors or tenants
- Washrooms and kitchen usage
- Flooring and specialist surfaces
- Customer-facing or sensitive areas
Operating Requirements
- Preferred cleaning windows
- Access, keys and alarm procedures
- Waste and consumables responsibilities
- Periodic and specialist cleaning
- Inspection and reporting expectations
Do not ask, “How many hours do I need?” before asking, “What standard does this building need to maintain?” The labour allocation should be the consequence of the specification, not the substitute for one.
Seven tests a commercial cleaning company should be able to pass
A strong provider does not need to be the biggest company in the market. It does need to demonstrate that the service can be mobilised, staffed, controlled and measured.
Site survey and written scope
The contractor should understand the premises before finalising the service. A useful survey considers footfall, room use, floor types, washrooms, kitchens, access, waste, sensitive areas and existing problems.
- Site visit before final specification where practical
- Room or zone-based task schedule
- Daily, weekly and periodic frequencies
- Clear inclusions and exclusions
Insurance and compliance evidence
Ask for current certificates and make sure the cover is appropriate for your premises and procurement requirements. Employers in Great Britain generally need Employers’ Liability insurance of at least £5 million, subject to statutory exemptions. Public liability is commonly requested commercially, but the appropriate limit depends on the contract and client requirements.
- Current Employers’ Liability certificate where required
- Public liability cover appropriate to the assignment
- Insurer, dates and policy limits visible
- Subcontractor insurance position understood
Recruitment, vetting and right to work
A buyer should understand who can enter the property and how that person was recruited. UK employers must check that workers have the right to work before employing them. Criminal-record checks should be proportionate and legally appropriate to the role.
- Documented recruitment process
- Right-to-work checks
- Identity and reference checks
- DBS level appropriate to the role where eligible or required
Training and safe chemical use
Cleaning staff need to understand the products and equipment they use. Where substances hazardous to health are involved, employers must provide suitable information, instruction and training under COSHH requirements.
- Site induction
- COSHH information and training
- Equipment and method training
- Additional sector-specific instruction where relevant
Supervision, inspections and reporting
Ask who checks the work when the client has not complained. A professional contractor should have its own quality-control process rather than relying on the client to identify every failure.
- Named operational contact
- Planned supervisor inspections
- Issue and corrective-action process
- Service reviews for recurring contracts
Absence cover and operational resilience
Cleaning contracts eventually encounter sickness, holidays, transport disruption and staff turnover. The important question is not whether disruption can happen, but how the provider maintains the agreed service when it does.
- Documented absence-cover process
- Replacement staff briefed on the site
- Client communication when cover changes
- Access details controlled safely
References and comparable experience
References are most useful when the referenced site resembles yours. Ask about attendance, communication, complaint handling, continuity and whether standards remained consistent after the first few months.
- Comparable sector or property type
- Similar contract complexity
- Recent or current relationship
- Permission to verify the reference
Who owns the problem when something fails?
Every long-term cleaning contract will have an issue eventually. The strongest provider can tell you who receives the complaint, who investigates it, what happens next and how the outcome is recorded.
Accountability is the test that connects all seven areas.
Weak claims versus useful evidence
Procurement becomes easier when you translate broad sales language into something that can be checked.
| Area | Weak Claim | Useful Evidence | What You Are Testing |
|---|---|---|---|
| Quality | “We deliver the highest standards.” | Written specification, inspection process, issue log and corrective actions. | Whether quality is managed systematically. |
| Staffing | “Our cleaners are fully vetted.” | Recruitment policy, right-to-work process and role-appropriate background-check policy. | Whether “vetted” has a defined meaning. |
| Reliability | “We never let clients down.” | Absence-cover procedure, escalation route and named manager. | How the service behaves when disruption occurs. |
| Insurance | “Fully insured.” | Current certificates showing insurer, policy period and limits. | Whether cover exists and suits the assignment. |
| Experience | “We clean every type of site.” | References or case examples from comparable premises. | Whether experience is relevant to your environment. |
| Price | “Best value guaranteed.” | Itemised hours, frequency, included tasks, materials, management and exclusions. | Whether the quote is genuinely comparable. |
How to compare commercial cleaning quotations properly
Cleaning quotes often look comparable because they end with a monthly figure. That can be misleading. The monthly figure is the output. The important information is underneath it.
Before deciding that one provider is expensive or another is cheap, put the quotations side by side and compare:
- Total labour hours per week or month
- Number of visits and minimum visit duration
- Areas and tasks included in the core service
- Periodic work included or excluded
- Cleaning materials, machinery and consumables
- Supervision and account-management provision
- Absence cover and replacement arrangements
- Out-of-hours, weekend or bank-holiday treatment
- Price-review mechanism
- Contract term, notice and variation provisions
“A cheaper hourly rate can produce the more expensive contract when the provider has simply removed the hours needed to deliver the specification.”
Citywide Cleaning Company · Buyer GuidanceFor a separate discussion of price drivers, see our guide to cleaning cost factors in London.
What should be clear before the cleaning contract starts?
A good commercial relationship does not depend on both parties remembering the same conversation. The written agreement should remove ambiguity around service, responsibilities and change.
Scope
Areas, tasks, frequencies, periodic work, exclusions and consumables responsibilities.
Service Times
Days, cleaning windows, access procedures and what happens when operating hours change.
Quality Control
How performance is inspected, recorded, reviewed and corrected.
Staffing
Cover arrangements, supervision, site induction and how replacement staff are briefed.
Commercial Terms
Price, invoicing, review mechanism, contract duration and notice provisions.
Change & Escalation
How additional work is approved, who handles problems and how unresolved issues are escalated.
Do not accept a claim that one notice period is automatically “standard” for every cleaning contract. Read the actual termination and renewal clauses, assess the operational implications and make sure the terms suit your procurement policy and risk tolerance.
DBS, right to work and COSHH: what buyers should understand
Cleaning companies sometimes compress several different compliance matters into the phrase “fully vetted”. Buyers should separate them.
Right to Work
UK employers must check that a person has the right to work before employing them. Ask the contractor whether its recruitment process includes documented right-to-work checks and follow-up checks where required.
DBS Checks
DBS checks are not one universal level for every cleaner. The type of check available depends on the role and legal eligibility. Some sensitive settings can justify or require higher-level checks; other cleaning roles may only be eligible for a Basic check.
COSHH
Where cleaning work involves substances hazardous to health, employers must assess and control the risk and provide employees with suitable information, instruction and training.
Site-Specific Requirements
Schools, healthcare environments, food settings, secure facilities and other regulated or sensitive premises may require additional checks, procedures or training. These should be confirmed for the actual site rather than assumed from a generic cleaning policy.
Instead of asking, “Are all your cleaners enhanced DBS checked?” ask, “What vetting and background checks apply to the operatives assigned to this role, and why are those checks appropriate for this site?”
What a useful cleaning survey should investigate
The site survey is where a capable contractor turns a vague cleaning request into an operational plan. It should not be a ten-minute walk-through followed by a generic quote.
People
- Occupancy
- Visitor traffic
- Tenant use
- Peak periods
Property
- Floor types
- Washrooms
- Kitchens
- Specialist finishes
Operations
- Access times
- Keys and alarms
- Waste routes
- Building rules
Performance
- Current complaints
- Priority areas
- Inspection needs
- Periodic tasks
Citywide's current commercial cleaning service follows this site-specific principle by assessing premises, access, usage and service requirements before building the cleaning plan.
Eight warning signs that deserve a second look
None of these automatically proves that a provider is unsuitable. Each one is a reason to ask for a clearer answer before you sign.
A final price without meaningful site information
A contractor can provide an estimate remotely, but a final recurring specification should be based on enough information to understand the actual workload.
“General cleaning” as the entire specification
Vague wording makes accountability difficult. You should be able to see what is cleaned, where and how often.
No named operational owner
If nobody clearly owns inspections, staffing changes and complaints, those responsibilities can drift back to the client.
No credible absence-cover explanation
“We will sort something out” is not a continuity plan. Ask how replacement staff are sourced, briefed and granted access.
Unwillingness to evidence insurance
Current insurance certificates are routine procurement documents. Delays or evasiveness deserve investigation.
Overbroad background-check claims
Be cautious when a company suggests that one DBS level is universally required or universally available for every cleaning role.
A large price gap with no operational explanation
The lower quote may be efficient, but you should understand whether the difference comes from fewer hours, exclusions, staffing assumptions or genuine economies.
Excellent promises but weak change control
Cleaning requirements evolve. The contract should explain how new tasks, occupancy changes and additional work are costed and approved.
A simple way to compare shortlisted cleaning companies
Scoring will never replace judgement, but it stops one impressive sales presentation or one low number from dominating the decision.
Scope & site understanding: survey quality, property-specific specification, frequencies, inclusions and exclusions.
People & vetting: recruitment, right-to-work process, references, role-appropriate checks and site induction.
Training & safety: COSHH, equipment, methods, risk controls and sector-specific requirements.
Management & QA: named ownership, inspections, reports, issue handling and service reviews.
Continuity: absence cover, replacement briefing, escalation and operational resilience.
Evidence & references: comparable clients, current documents and transparent answers.
Commercial clarity: itemised quote, fair terms, change process, price review and contract transparency.
Set your own minimum score and any pass/fail requirements before presentations begin. For example, a provider might score well overall but still fail procurement if required insurance evidence or a site-specific specification is missing.
Questions worth asking every shortlisted cleaning company
Service Design
- How did you calculate the proposed labour hours?
- Which tasks are daily, weekly and periodic?
- What is explicitly excluded?
- What would cause the specification to be changed?
People
- How are operatives recruited and checked?
- What training is completed before deployment?
- How do you decide who is suitable for our site?
- How is a replacement operative briefed?
Management
- Who is our named operational contact?
- Who inspects the cleaning?
- How often are standards reviewed?
- How are recurring failures escalated?
Commercial
- What is included in the quoted price?
- How are additional tasks approved?
- How and when can the price change?
- What are the termination and renewal provisions?
Use the same standard when you assess us
This guide is intentionally useful whether Citywide Cleaning Company is on your shortlist or not. When you speak to us, ask us to explain the proposed cleaning specification, staffing approach, supervision, cover arrangements, training and commercial terms in the same way you would ask another provider.
Our commercial cleaning services page explains how we structure site surveys, written cleaning plans, cleaner allocation and ongoing account support. For recurring contractual arrangements, you can also review our contract cleaning services.
If a provider cannot explain how its own service meets the criteria in this guide, it should not receive special treatment simply because its proposal is familiar, persuasive or inexpensive.
Choosing a commercial cleaning company: buyer questions answered
What should I look for when choosing a commercial cleaning company?
Look for a site-specific written specification, appropriate insurance, documented recruitment and right-to-work processes, suitable training, clear supervision and quality control, reliable absence cover, relevant references and a transparent quotation and contract. The strongest provider should be able to evidence how the service will be delivered and managed, not simply describe itself as reliable.
How many cleaning companies should I ask to quote?
There is no universal correct number. A shortlist of several credible providers is usually enough to compare approaches without creating unnecessary procurement work. Quality of comparison matters more than collecting a large number of prices. Make sure every provider is quoting against the same scope.
Should I choose the cheapest commercial cleaning quote?
Not automatically. Compare labour hours, cleaning frequency, included tasks, periodic work, materials, supervision, absence cover and contract terms before comparing the final price. A lower quote may represent efficiency, but it may also contain fewer hours or more exclusions.
What insurance should a commercial cleaning company have?
Where the contractor employs staff in Great Britain, Employers’ Liability insurance is generally compulsory, subject to statutory exemptions, and the legal minimum cover is £5 million. Buyers commonly also request public liability insurance, with the appropriate limit determined by the property, contract and procurement requirements. Ask to see current certificates rather than relying on the phrase “fully insured”.
Do commercial cleaners need an Enhanced DBS check?
Not in every role. The type of DBS check available depends on the job and legal eligibility. Some cleaning roles in sensitive settings may be eligible for an Enhanced check, while other roles may only be eligible for a Basic check. Buyers should ask what check is appropriate for the actual assignment rather than assuming one level applies to every cleaner.
What should a cleaning specification include?
A useful specification should identify the areas to be cleaned, individual tasks, frequencies, cleaning windows, periodic work, responsibilities for equipment or consumables, access arrangements, quality expectations and any exclusions. It should reflect the actual premises rather than being a generic template.
How can I tell whether a cleaning company has good quality control?
Ask who inspects the work, how often inspections happen, what is recorded, how the client sees the results and what happens after a failed inspection. A credible quality-control process should create action, not simply a score or checklist.
What should happen if the regular cleaner is absent?
The provider should have a defined cover procedure. The replacement operative should be suitable for the site, briefed on the specification and given access information through a controlled process. The client should know how attendance changes will be communicated.
Should I ask a cleaning company for references?
Yes. References are most useful when they come from current or recent clients with premises or service requirements similar to yours. Ask about reliability, communication, staff continuity, complaint handling and whether standards remained consistent after mobilisation.
What is the biggest red flag when choosing a cleaning contractor?
The biggest warning sign is a gap between promises and evidence. If a company cannot clearly explain its staffing, insurance, specification, supervision, absence cover, complaint process or commercial assumptions, the client is being asked to accept uncertainty that should have been resolved before contract signature.
Choose the operating model, not the sales pitch
The cleaning industry has no shortage of companies that can produce a professional quotation. The harder question is what happens three months after the proposal meeting, when the regular cleaner is away, the building has changed, a task is missed or the client needs an answer quickly.
The right commercial cleaning company should make the premises easier to manage. It should provide enough structure that the client can see what is expected, who is responsible and how the service is being controlled.
Before You Sign
- Verify the evidence
- Compare equivalent scopes
- Read the commercial terms
- Understand staffing and cover
Before Mobilisation
- Agree the written specification
- Confirm access and security
- Name the escalation contacts
- Agree how quality will be measured
Continue your commercial cleaning research
These supporting guides cover the next questions buyers commonly need to answer.
8 Steps to Take When Looking for a Cleaning Company
A chronological procurement checklist covering scope, experience, compliance, supervision, cover, written quotes and references.
Read the 8-Step GuideWhat Is Commercial Cleaning?
A complete explanation of commercial cleaning scope, contract structure, service types, frequency and how professional cleaning differs from domestic cleaning.
Read the Commercial Cleaning GuideOffice Cleaning Contract Checklist
A practical framework for reviewing schedules, accountability, inspections, absence cover and contract assumptions.
Read the Contract ChecklistOffice Cleaning Cost in London
Understand the operational factors that drive quotations and why equivalent scope matters when comparing prices.
Review Cleaning Cost FactorsJanitorial vs Commercial Cleaning
Understand the difference between recurring janitorial tasks and the wider commercial cleaning contract.
Compare the Service ModelsFinding a Good Cleaning Company in London
A location-specific guide for London buyers researching and shortlisting potential cleaning providers.
Read the London GuideExplore Citywide services and service coverage
Commercial Cleaning Services
Managed cleaning for offices, retail premises, schools, clinics, shared buildings and other commercial environments.
Explore Commercial CleaningContract Cleaning Services
Recurring cleaning contracts with agreed schedules, written specifications and ongoing management.
Explore Contract CleaningProfessional Office Cleaning
Office-focused cleaning for workstations, meeting rooms, kitchens, washrooms and shared workplace areas.
Explore Office Cleaning ServicesLondon Cleaning Coverage
Citywide's principal London hub for managed workplace cleaning, local coverage and quotation information.
Explore London CoverageCleaning Services Hub
Browse Citywide's wider portfolio of routine, specialist and sector-specific professional cleaning services.
View All Cleaning ServicesLocations Hub
Explore Citywide Cleaning Company coverage across key UK cities and business locations.
View All LocationsReferences for the legal and safety points in this guide
Commercial requirements vary by contract and sector. For current regulatory guidance, consult the relevant authority or professional adviser.
Ask Citywide to build a cleaning specification around your premises
Tell us about your property, current cleaning issues, preferred schedule and access arrangements. We can review the site and prepare a written proposal so you can compare the scope against other providers on an equivalent basis.
This buyer guide is published by Citywide Cleaning Company, a commercial cleaning provider. It is written to give buyers a practical framework for assessing any cleaning contractor, including Citywide. Regulatory references are included for general information and should not be treated as legal advice. Site-specific procurement, safeguarding, insurance and compliance requirements should be checked against the actual premises, role and contract.
This page was last updated on 12 August 2026.
