How much does damp treatment cost in London?
A 2026 guide to treating rising damp, penetrating damp and condensation in London.
London’s older, solid-wall terraces and converted flats often need tailored damp treatment, and labour rates run above the national average. Here is what to expect in 2026.
Typical London damp treatment costs
| Job | Typical London cost (2026) |
|---|---|
| Single wall (localised) | £350–£500 |
| Chemical DPC injection | £50–£70 per linear metre |
| Replastering after treatment | £350–£550 per room |
| Condensation treatment | £250–£1,000 |
| Rising damp (Victorian terrace) | £3,000–£6,000 |
| Typical full project | £3,000–£6,500 |
These are typical London guide prices for 2026 and will vary by job, borough and property. Always get written quotes for your own project.
What affects the cost?
- The type and cause of the damp
- The area affected and replastering needed
- London’s solid-wall period housing
- ULEZ, parking and access
- Whether a guarantee is provided
- Inner versus outer London
Damp costs across London
London’s older, solid-wall terraces and converted flats often need careful, tailored treatment, and labour rates run above the national average. A proper survey is the best way to get an accurate price.
How to get a fair price in London
Get a survey and a written report identifying the cause, check for PCA membership, and be cautious of anyone quoting without inspecting. See our full UK damp treatment cost guide.
Frequently asked questions
How much to treat damp in London?
A full damp treatment project in London typically costs £3,000–£6,500, with rising damp in a Victorian terrace £3,000–£6,000 including replastering.
Why does London damp treatment cost more?
London’s older solid-wall housing often needs tailored treatment, and labour rates are higher than the national average.
Do I need a survey first?
Yes, for anything beyond a small area. A survey identifies the real cause so you treat the problem, not just the symptom.
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