Damp patches, musty smells, black mould around windows, flaking plaster – damp is one of the most common worries for London homeowners and buyers, and one of the most misdiagnosed. The critical problem: most “free damp surveys” are carried out by damp-proofing companies whose income depends on selling you treatment. Kingston Surveyors arranges genuinely independent damp surveys across London, carried out by chartered surveyors and dampness specialists who have nothing to sell but an honest answer – what the damp is, what is causing it, and the most proportionate way to fix it.
Your damp surveyor inspects the property inside and out, using moisture profiling, and where appropriate thermal imaging and salts analysis, to distinguish the three damp families that get confused constantly: rising damp (far rarer than the treatment industry suggests), penetrating damp from defective gutters, roofs, render or pointing, and condensation – the cause of most black mould in London homes. The report explains the diagnosis in plain English with photographs, identifies the source rather than just the symptom, and sets out proportionate remedies – which are often maintenance items like clearing gutters or improving ventilation rather than expensive chemical injection. If you are buying, the findings give you hard evidence for renegotiation.
A damp-proofing contractor’s free survey has a built-in conflict of interest: the surveyor is also the salesperson. It is common for condensation – fixable with ventilation for a few hundred pounds – to be diagnosed as rising damp needing thousands of pounds of injection and replastering. The dampness surveyors we arrange are independent of any treatment company, so their advice carries weight with buyers, sellers, landlords, insurers and – where a dispute arises – with the courts. Landlords also use our damp reports for housing-disrepair matters, where an impartial expert assessment of condensation versus structural damp is often decisive.
Kingston Surveyors arranges independent damp surveys and inspections across every London borough, as well as Surrey and the wider UK. Quotes are confirmed the same working day, inspections are usually available within days, and reports follow shortly after with clear photographs and priorities. If the damp turns out to be linked to structural movement, we can also arrange a subsidence survey or specific defect report through the same instruction. Call 0204 579 8270 or use the quote form below for a free, no-obligation quote.
An independent damp survey typically costs £250-£450 for an average London home, depending on size and access. That fee buys what free surveys from damp-proofing companies cannot offer: independence. The surveyor we arrange has nothing to sell but the diagnosis – moisture profiling, salts analysis where needed, and a written report identifying whether the cause is rising damp, penetrating damp, condensation or a plumbing leak, with proportionate remedies for each. Full pricing detail is in our damp survey cost guide, and if timber is affected see the damp and timber report guide. Where damp coincides with cracking or movement, a subsidence survey may be the better starting point.
