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
Commercial cleaning quotes depend on site size, surface type, soiling, access and the work required. 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.
Driveway cleaning quotes depend on the area, surface type, staining, access and whether re-sanding, treatment or sealing is requested.
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.
Ask to see a current insurance certificate and check that its cover is appropriate for the work before booking.
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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