Commercial pressure washing rates work differently from domestic pricing, since jobs range from a single small forecourt to a large industrial yard, and clients need proper documentation like RAMS (risk assessment and method statement) alongside the clean itself, not just a good result on the day, particularly where facilities managers or landlords require a paper trail.
This guide explains how day rates and per-m² rates work for commercial jobs, and what should be included around insurance and paperwork before you sign off a contractor for site or facilities work of any scale.
Day rates versus per-m2 rates
For larger commercial sites, contractors often quote a day rate, typically £250-£450 per day for a two-person team with commercial-grade equipment, which covers a substantial area depending on soiling and surface type. This suits large car parks, warehouse forecourts, or multi-unit retail parks where the total area is big enough that per-m² pricing would be cumbersome to calculate upfront.
For smaller or one-off commercial jobs, such as a single shopfront forecourt or a small yard, per-m² pricing is more common, typically £1.50-£4 per m² depending on surface type and soiling level, similar in principle to domestic driveway pricing but often with a minimum call-out charge to reflect commercial-grade insurance and equipment costs.
What affects commercial rates
Grease and oil-heavy surfaces, like fuel forecourts or loading bays, need degreasing agents and sometimes water reclamation systems to meet environmental regulations, which adds cost. Working around live business operations, out-of-hours access requirements, or the need for traffic management on a busy car park also affects the rate.
Frequency matters too: a contracted, regular commercial cleaning schedule (monthly or quarterly) is usually priced more favourably per visit than a one-off job, since it gives the contractor predictable, repeat work.
RAMS and insurance inclusions
Any legitimate commercial pressure washing contractor should be able to provide RAMS documentation before starting work on a commercial site, outlining how the job will be carried out safely and what risks have been assessed and mitigated. This should be included as standard, not charged as an extra.
Public liability insurance, ideally £2 million or more for commercial work, spill management awareness (particularly relevant near drains or watercourses), and, where relevant, waste water disposal compliance are all things a commercial client should confirm before booking, not assume.
Setting up a commercial contract
For repeat or scheduled commercial work, it's worth agreeing a written contract covering frequency, scope, pricing and any conditions around cancellation or rescheduling due to weather. This protects both sides and avoids ambiguity, particularly for larger sites with multiple stakeholders or facilities managers involved in sign-off, where informal verbal arrangements tend to break down over time.
A contractor who's genuinely experienced with commercial sites will usually suggest this themselves rather than working purely on an ad hoc basis, since a documented schedule benefits their planning as much as the client's budgeting, and it avoids awkward conversations about scope creep later on.
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