In-House Cleaning Staff vs Outsourcing to a Commercial Cleaner in London: Which Saves Your Business More?

At some point, every London business with an office, restaurant, gym, or commercial space faces the same question: should we employ our own cleaners or outsource to a commercial cleaning company?

On the surface, hiring in-house feels like the cheaper option. You control the schedule, you know who is in the building, and you avoid paying a third party's profit margin. But when you add up the actual cost of employing someone in London in 2026, including employer's National Insurance at 15%, pension contributions, holiday pay, sick pay, equipment, insurance, recruitment, and management time, the numbers tell a different story.

The True Cost of Employing an In-House Cleaner in London in 2026

Most businesses underestimate what it actually costs to employ a cleaner because they focus on the hourly wage and forget everything else. Here is what a single full-time in-house cleaner really costs a London business in the 2026/27 tax year.

Gross salary. The average cleaner in London earns £13.48 per hour according to Indeed data from 2026. If you pay the London Living Wage, which is the responsible benchmark for any employer in the capital, that figure rises to £13.85 per hour. For a full-time cleaner working 37.5 hours per week, that gives you an annual gross salary of approximately £27,000.

Employer's National Insurance. This is the cost most businesses underestimate. From April 2025, employer NI increased to 15% and the secondary threshold dropped to £5,000 per year. Both rates are frozen through 2026/27. On a £27,000 salary, you pay 15% on everything above £5,000, which comes to approximately £3,300 per year. That is a significant increase from previous years and a cost that did not exist at this level just two years ago.

Workplace pension. Auto-enrolment is mandatory. The minimum employer contribution is 3% of qualifying earnings. On a £27,000 salary, that adds approximately £810 per year.

Holiday pay. Every employee is entitled to a minimum of 28 days paid holiday (including bank holidays). That means your cleaner is being paid for 5.6 weeks of the year during which no cleaning takes place. If you need cover during those weeks, you are paying for two cleaners for the same role.

Statutory Sick Pay. From April 2026, SSP is payable from the first day of sickness rather than the fourth day, and the Lower Earnings Limit has been removed, meaning all employees qualify regardless of how much they earn. SSP is £123.25 per week, and while the direct cost is modest, the indirect cost of either going without cleaning or arranging emergency cover is not.

Recruitment costs. Hiring a cleaner in London costs money even before they start. Job advertising, interview time, DBS checks, right-to-work verification, and onboarding all add up. If the hire does not work out and you need to recruit again within six months, you pay twice. Recruitment costs for a single cleaning position typically range from £500 to £1,500.

Equipment and cleaning products. A professional standard of cleaning requires professional equipment. A commercial vacuum cleaner costs £300 to £600. A floor buffer or scrubber costs £500 to £2,000. You also need mops, buckets, microfibre cloths, and a full range of cleaning chemicals, all of which need regular replacement. Annual equipment and product costs for a single cleaner typically run between £1,500 and £3,000.

Employer's liability insurance. This is a legal requirement. Any business that employs staff must have employer's liability insurance of at least £5 million. If your only employee is a cleaner, you still need this cover. Premiums vary, but a typical policy costs £300 to £600 per year.

COSHH compliance. Every cleaning chemical used in your workplace must have a documented risk assessment. You need safety data sheets for each product, and your cleaner needs documented training in handling, storage, and disposal. Managing this internally requires either your time or the time of a health and safety consultant.

Supervision and management. Someone in your business has to manage the cleaner. That means setting standards, checking work, addressing performance issues, ordering supplies, maintaining equipment, and covering the administrative side of employment (payroll, pension, HMRC submissions, holiday tracking). For a small business, this often falls on the office manager or operations director, whose time has a significant opportunity cost.

Total true cost. When you add it all up, a single full-time in-house cleaner in London costs between £34,000 and £38,000 per year. That is £7,000 to £11,000 more than the gross salary alone. And that figure does not include the cost of cover during holidays and sickness, or the management time required to keep everything running.

The Cost of Outsourcing to a Commercial Cleaning Company in London

Outsourced commercial cleaning in London is typically priced either by the hour or as a fixed monthly contract. At C&A Commercial Group, standard commercial cleaning rates start from £25 per hour, with deep cleaning and specialist services ranging up to £50 per hour.

Here is what outsourced cleaning costs for a typical London office.

Small office (up to 2,000 sq ft), cleaned three times per week

A team of one to two cleaners for approximately 1.5 hours per visit. At £30 per hour average, that comes to approximately £270 per week or £14,040 per year.

Medium office (2,000 to 5,000 sq ft), cleaned five times per week

A team of two to three cleaners for approximately two hours per visit. At £30 per hour average for the team, that comes to approximately £450 per week or £23,400 per year.

Large office (5,000 to 10,000 sq ft), cleaned daily

A larger team with extended visit times. Monthly contract pricing typically ranges from £1,500 to £3,000, giving an annual cost of £18,000 to £36,000 depending on specification.

These prices include everything: labour, employer's NI, pension, insurance, equipment, cleaning products, supervision, quality assurance, holiday and sickness cover, COSHH compliance, and account management. There are no hidden employer costs because you are not the employer. The cleaning company absorbs all of those obligations.

Side-by-Side Cost Comparison for London Businesses

Here is the comparison that matters. For a medium-sized London office that needs cleaning five days a week, two hours per day.

In-house option. One full-time cleaner at London Living Wage. Gross salary £27,000 plus employer NI £3,300 plus pension £810 plus equipment and products £2,000 plus insurance £400 plus recruitment £750 (amortised over two years) plus COSHH and training £300. Total: approximately £34,560 per year. And you still need to arrange and pay for cover during 28 days of annual leave and any sick days.

Outsourced option. Two hours per day, five days per week, at a blended rate of £30 per hour. Total: approximately £15,600 per year. All cover, equipment, insurance, and compliance included. No employer obligations, no management overhead, no recruitment risk.

The outsourced option costs less than half the in-house option for the same level of cleaning. Even if you only need your in-house cleaner for four hours per day rather than a full 7.5-hour shift, you still pay the same employer NI, pension, holiday, insurance, and equipment costs. The fixed overheads do not scale down with reduced hours.

When In-House Cleaning Makes Sense for London Businesses

Outsourcing is not the right answer for every business. There are situations where employing in-house cleaning staff is justified.

Very large premises with all-day cleaning needs. If your business requires a cleaner on-site for a full working day, every day, the economics shift. A full-time in-house cleaner at £34,000 all-in may cost less than eight hours of outsourced cleaning per day at commercial rates. This is most common in large warehouses, manufacturing facilities, hospitals, and multi-floor corporate offices.

Highly sensitive environments. Some businesses in defence, intelligence, or classified government work require cleaning staff who hold security clearance beyond standard DBS checks. In these cases, employing vetted staff directly and maintaining long-term continuity may be a compliance requirement.

Businesses that need extreme flexibility. If you need a cleaner available on demand throughout the day to respond to spills, events, and ad-hoc requests, having someone on staff gives you that immediate availability. However, many outsourced providers (including C&A) offer daytime cleaning operatives as part of a managed contract, which achieves the same result without the employment overhead.

Cultural or team integration. Some businesses, particularly smaller ones, value having their cleaner as part of the team rather than an external contractor. This is a legitimate preference, though it does come at a financial premium.

When Outsourcing Commercial Cleaning Saves London Businesses More

For the majority of London businesses, outsourcing delivers better value. Here is why.

You only pay for the cleaning you need. An in-house cleaner is on your payroll for 37.5 hours per week regardless of whether your office needs 37.5 hours of cleaning. Most offices do not. A 3,000-square-foot office might need ten hours of cleaning per week. Outsourcing lets you pay for exactly those ten hours. Employing someone in-house means paying for 37.5 hours and finding other tasks to fill the remaining 27.5.

No cover costs for holidays or sickness. When your in-house cleaner takes annual leave, you either go without cleaning for a week or pay for temporary cover on top of your employee's holiday pay. When an outsourced provider's cleaner is on leave, the company sends a replacement. You do not pay extra. You do not arrange anything. Cover is built into the contract.

No employer NI, pension, or insurance obligations. The 15% employer NI rate and the £5,000 threshold introduced in 2025 make employment in London more expensive than at any point in the last decade. Outsourcing moves these costs off your balance sheet entirely.

Professional equipment and products are included. Commercial cleaning companies invest in professional-grade equipment that delivers better results than consumer or light-commercial machines. Outsourcing gives you access to that equipment without the capital outlay or maintenance responsibility.

Built-in quality assurance. A reputable cleaning company provides supervision, inspections, and account management as standard. With an in-house cleaner, quality control falls on your own team, which is an additional management burden.

Scalability. If your office grows, you increase the cleaning hours or frequency. If your team goes hybrid and the office is half-empty three days a week, you reduce the schedule. With an in-house employee, scaling down means either redundancy or paying for hours you do not need.

COSHH, training, and compliance are handled for you. Risk assessments, safety data sheets, staff training, and ongoing compliance management are all the cleaning company's responsibility. You receive the documentation without doing the work.

Hidden Costs of In-House Cleaning That London Businesses Overlook

Beyond the direct financial comparison, several hidden costs consistently catch London businesses off guard.

Management time. Someone has to manage the cleaner. Ordering supplies, maintaining equipment, checking standards, processing payroll, managing holidays, and dealing with performance issues all take time. For a small business where the office manager handles this alongside everything else, the opportunity cost is real.

Recruitment churn. Cleaner turnover in London is high. If your cleaner leaves after four months, you absorb the full recruitment cost again. You also absorb the productivity dip while the role is vacant and the time it takes to train someone new. Outsourcing transfers this risk entirely to the cleaning company.

Equipment depreciation and replacement. Commercial vacuums, floor machines, and pressure washers do not last forever. Replacement cycles, servicing, and repairs are ongoing costs that often get forgotten until something breaks.

Liability exposure. If your in-house cleaner is injured at work, you are the employer. If they slip on a wet floor, damage a piece of equipment, or are exposed to chemicals without proper protection, the liability sits with you. Outsourced cleaning companies carry their own public liability and employer's liability insurance, transferring that risk away from your business.

Outsource Your Commercial Cleaning in London to Professional Cleaning Company 

For most London businesses, the maths is clear. Outsourcing commercial cleaning costs less, delivers a higher and more consistent standard, eliminates employer obligations, and frees up management time for work that actually grows the business.

At C&A Commercial Group, we provide professional commercial cleaning services for offices, restaurants, retail stores, gyms, medical practices, and commercial properties across London. Our rates start from £25 per hour, with all labour, equipment, products, insurance, compliance, and cover included.

We are SafeContractor approved, RoSPA assured, and CPD certified. Our teams are directly employed, DBS checked, and trained to deliver consistent results. We provide dedicated account management, regular quality inspections, and the flexibility to scale your cleaning up or down as your business needs change.

Contact C&A Commercial Group today for a free consultation and a no-obligation quote. Find out exactly how much you could save by switching from in-house to professional outsourced cleaning.