Mould removal cost estimator
Four questions and a typical UK price range, with what it’s made of. Ranges only — a survey sets the price.
Quick answer
Professional mould removal in the UK typically costs £150–£400 for a small, isolated patch, £400–£800 for a room or several patches, and £800–£3,000+ for extensive remediation where plaster has to be replaced — plus an independent survey at £200–£400 if the cause isn't known, and the fix for the cause. This estimator adds those ranges up for your job. They are typical ranges, not quotes.
Typical cost
£600–£1,200
A typical UK range, not a quote. A survey sets the price.
| Item | Typical range |
|---|---|
| Mould removal — a room or several patchesHEPA cleaning and biocidal treatment, sometimes anti-mould sealing paint. | £400–£800 |
| Independent damp surveyThe cause isn't known, so a written survey comes first — it finds what is feeding the mould and gives you a scope of works to price. | £200–£400 |
| RedecorationReplastering, repainting and flooring after treatment are usually quoted separately. | Quoted separately |
- Until the cause is known, the removal range is the lesser part of the bill: mould returns if the moisture isn't dealt with.
- Labour rates are higher in London and the South East.
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Frequently Asked Questions
- How much does mould removal cost?
- £150–£400 for a small, isolated patch, £400–£800 for a room or several patches, and £800–£3,000+ for extensive remediation where plaster is replaced. The price depends on how far the mould has spread and whether the moisture causing it also needs fixing.Mould removal costs in full →
- Why does the estimator give a range, not a price?
- Because the cost of a job depends on things that can only be seen on site: how deep the growth goes, what the surface is, how easy it is to reach and what is causing it. A survey or a written quote after an inspection sets the real price — the range tells you what is reasonable to expect.
- What is not included in the range?
- Fixing a leak, structural repairs such as pointing, flashing or a damp-proof course, and redecoration are quoted separately. The estimator lists them as quoted separately rather than guessing a number.
- Do I need a survey first?
- Usually if the mould keeps returning, covers more than a small area or has no obvious cause. An independent damp survey costs £200–£400 and produces a written report, so you pay to fix the right thing once.Independent damp surveys →
- Is anything I enter stored or sent?
- No. Your answers stay in your browser. We only count that the tool was used, with no answers.
Figures are typical UK ranges from our mould removal price guide and condensation control costs; they vary by region and contractor. Not a quotation.