Current market ranges for damp treatment, with one crucial warning: diagnose the cause before buying a treatment.
Applies to: UK homes; diagnosis and treatment vary by cause. · Last checked: 4 October 2026
Key points
• Checkatrade’s June 2026 guide gives injection damp proofing around £1,000–£3,000 and a physical DPC retrofit around £2,500–£7,500.
• A damp survey is shown around £100–£600, averaging £300.
• Condensation, penetrating damp and rising damp need different remedies.
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Current market ranges
Checkatrade’s June 2026 guide gives £1,000–£3,000 for injection damp proofing and £2,500–£7,500 for a physical damp-proof-course retrofit. It gives basement tanking around £100–£200 per m².
Diagnosis before treatment
• Condensation may point to ventilation and moisture load.
• Penetrating damp may come from roofs, walls, gutters or plumbing.
• Rising damp requires evidence rather than assumption.
• Hidden leaks can mimic other damp patterns.
Budget for making good
The market guide notes that removal and reinstatement of plaster, finishes and drying can sit outside headline treatment figures. Ask what is excluded before comparing quotes.
Sources and methodology
Pricing figures are third-party UK market budgeting references, not BuildPair prices or guaranteed local quotes. Legal and safety points are linked to current official guidance. Check the current source and your project circumstances before acting.
Related BuildPair guides
BuildPair provides general information and signposting, not legal, structural, gas, electrical or building-control approval. Requirements and prices vary by location, property and scope.
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