What a damp survey can cost and what a useful investigation should establish before remedial work.
Applies to: UK homes; survey depth and independence vary. · Last checked: 4 October 2026
Key points
• Checkatrade’s June 2026 guide gives £100–£600 for a damp survey, averaging about £300.
• A survey is most useful when it identifies moisture source and evidence, not simply a product to sell.
• Ask whether the surveyor also sells the remedial treatment and what testing is included.
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Current cost guide
Checkatrade’s June 2026 damp-proofing guide lists damp surveys at £100–£600, averaging around £300. The right survey scope depends on the symptoms and property.
Useful questions
• What areas will be inspected?
• Will external defects and rainwater goods be checked?
• How will moisture readings be interpreted?
• Will plumbing leaks and condensation be considered?
• Will the report distinguish evidence from assumptions?
Independence can matter
Where the proposed remedial work is expensive or disputed, consider whether you want diagnosis separated from the company selling the treatment. That can make the evidence easier to assess.
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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