Patio cleaning cost calculator

Estimate a rough patio cleaning price before you request quotes.

This free calculator turns the main cost drivers into a practical range: patio size, surface material, staining, and access. It helps you prepare a better brief; it does not guarantee what any provider will charge.

Free estimate tool

Rough patio cleaning cost range

Use this as a planning range, not a fixed quote. Surface sensitivity, black spot, access, drainage, pets, plants, and treatment needs can change the final provider price.

Estimated range

£160-£260

Based on about 35m2, indian sandstone, moss, lichen, or slippery patches, and easy outdoor access.

Approximate sizeSurfaceConditionAccess

What changes the price

Is the surface concrete, sandstone, porcelain, or mixed natural stone?

Are black spot, lichen, moss, algae, or slippery shaded areas part of the job?

Will chemicals, runoff, pets, plants, drains, or nearby public access need extra controls?

Can the provider show similar same-surface examples, not just generic patio photos?

Treat the range as a planning signal. A provider still needs photos, surface notes, access details, water/drainage context, and stain evidence before giving a serious quote.

Compare hard-surface quotes fairly

Before accepting the cheapest quote, make sure the scope matches.

Driveway, patio, block-paving, and pressure-washing quotes can look similar while covering different proof, stain, runoff, and aftercare assumptions. Use these checks to compare like for like before requesting a shortlist.

Same-surface proof

Ask for examples from the same material and staining level, not just generic before-and-after photos.

Stain and exclusion wording

Confirm whether oil, black spot, rust, weeds, deep moss, or failed sealant are included, excluded, or priced separately.

Runoff and access controls

Check how water, debris, drains, plants, neighbours, parked cars, pets, and public paths will be protected.

Aftercare boundaries

Separate washing from re-sanding, sealing, chemical treatment, disposal, and any follow-up visit before comparing prices.

Provider photos, prices, reviews, and method claims are still provider-supplied unless WashMerit has separately reviewed the evidence. The checklist helps gather better inputs; it does not guarantee outcome, availability, or verified status.

From price research to shortlist brief

Carry the assumptions into the shortlist, not just the estimate.

Cost guides and calculators are only useful if the assumptions travel with the enquiry. Use the estimate or checklist as a starting point. Providers still need the surface, size, staining, access, drainage, aftercare, photos, and proof questions before they can give a serious patio-cleaning quote. WashMerit uses those details to narrow the brief to 2 to 3 likely-fit providers without treating price as a guarantee.

Start a quote with these details

Include these notes:

Patio size band, surface material, shaded/slippery areas, and any sensitive slabs or joints.
Photos of black spot, algae, lichen, moss, drainage, plants, pets, and nearby public access.
Access, water supply, runoff controls, chemical limits, aftercare, and same-surface proof questions.