Office and commercial cleaning contracts: what to check before signing

Choosing a commercial cleaning provider is a different exercise from booking a domestic clean, mainly because a written specification and contract terms matter far more once cleaning happens on a recurring, contractual basis in a workplace rather than a private home. A vague or poorly specified contract is one of the most common sources of dissatisfaction with commercial cleaning, usually because expectations were never actually written down clearly at the outset.

The foundation of any solid commercial cleaning contract is a detailed specification, ideally a room-by-room or area-by-area task list with a defined frequency attached to each task, rather than a general promise to "clean the office." This should spell out exactly what happens in washrooms, kitchens, desk areas and communal spaces, and how often — daily, weekly, or on some other agreed schedule — since "cleaning" can mean very different things depending on the type of space and how it's used. Just as important is what's explicitly excluded: window cleaning, carpet extraction and kitchen deep cleans, for instance, are commonly quoted and scheduled separately from a routine contract rather than bundled into it, so it's worth confirming from day one exactly what's in scope for the regular price and what would need a separate quote.

Beyond the task list itself, a proper contract should also cover the operational details that often cause friction if they're left to informal agreement: days and times of access, out-of-hours or bank holiday arrangements, key holding and building access or alarm codes, and confidentiality expectations where cleaning staff will be working around sensitive information or areas. None of this is unusual to ask a provider to put in writing, and a provider reluctant to commit these details to the contract is worth treating with some caution.

Commercial terms matter just as much as the cleaning specification. Pricing structure, notice periods for either side to end the arrangement, any liability caps on damage claims, and confirmation of the provider's own insurance (both public liability and, since they'll employ staff, Employers' Liability cover) should all be clearly stated rather than left to assumption. It's also worth understanding how price reviews work over the life of a longer contract, since a cleaning company's own costs — largely driven by staff wages — will rise over time, and a contract silent on this can lead to unexpected renegotiation demands partway through a term.

One issue that catches out businesses switching cleaning provider, rather than engaging cleaning for the first time, is TUPE — the Transfer of Undertakings (Protection of Employment) Regulations. Where an existing cleaning contract is being replaced by a new provider, TUPE can require the incoming contractor to take on the outgoing contractor's cleaning staff on their existing employment terms, rather than simply supplying new staff of their own choosing. This matters for cost and planning purposes: a quote for a new contract that hasn't accounted for TUPE obligations may turn out to be unrealistic once the actual staffing situation becomes clear. Businesses considering a change of provider should ask prospective new contractors directly whether they've factored in TUPE, and should request employee liability information about the incumbent's staff before finalising any pricing, rather than assuming the new provider can simply start from scratch with their own team.

Industry standards are worth asking about too, even though they aren't a legal requirement. BICSc, the British Institute of Cleaning Science, is the UK's long-established independent professional and training body for the cleaning sector, and "BICSc-trained" or "BICSc-accredited" staff are commonly cited by providers responding to tenders as a mark of quality and consistent training, alongside standards published by international bodies such as ISSA. This isn't a government-mandated qualification, but asking whether a provider's staff hold recognised industry training is a reasonable way to gauge how seriously they take standards and consistency, on top of checking references and existing client relationships directly.

It's also worth agreeing upfront how quality will actually be monitored once the contract is running, rather than leaving this to be worked out reactively after the first complaint. Some form of regular walk-round or inspection, whether carried out jointly with the provider's own supervisor or independently by someone on your side, gives both parties a structured way to flag issues before they become a pattern. Agreeing a simple process for reporting problems between inspections — who to contact, and what response time to expect — is a small addition to a contract that tends to prevent a lot of low-level frustration from building up unaddressed.

Before signing anything, it's sensible to get the same detailed specification quoted by at least two or three providers, rather than comparing headline prices alone, since a cheaper quote covering less scope, lower frequency, or excluding tasks another provider includes as standard isn't actually a like-for-like comparison. Asking each provider to quote against an identical written specification is the most reliable way to see whether a lower price reflects genuine efficiency or simply a reduced service that will need topping up later at extra cost.

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