Damp Survey in Greater London (19)

If you’ve spotted signs of damp in your home - from musty smells to peeling paint - getting a damp survey is the first step to sorting it.

Whether you’re buying a property, dealing with a stubborn damp patch, or just want peace of mind, a damp surveyor in London can pinpoint the problem and recommend the right fix.

Damp survey in London

At Checkatrade, you’ll only find damp surveyors in London who’ve passed up to 12 checks.

You can read reviews from real customers, compare quotes, and even be covered by the Checkatrade Guarantee (T&Cs apply) when you contact or pay through us. That’s extra confidence in getting a job done right.

What to expect from hiring a damp surveyor in London

A house damp survey is a detailed inspection to find the source of damp and advise on treatment.

Common jobs requested include:

• Investigating rising damp, penetrating damp, or condensation issues
• Inspecting after a homebuyer survey has flagged damp
• Assessing suspected damp and mould in older properties or basements

Average damp survey costs in London:

• 2-bedroom flat: £200
• 3-bedroom terraced house: £400
• 4-bedroom detached house: £600

Costs are usually based on property size, not the type of damp.

Additional costs to consider:

• Specialist lab testing (if needed)
• Travel costs for rural areas
• Follow-up inspections after treatment

What’s included in a typical damp survey

• Initial consultation on your property’s history and symptoms
• External inspection (walls, gutters, drains, pipes)
• Internal inspection (walls, ceilings, floors) for water stains, mould, flaking paint
• Moisture readings
• Photographs and written notes
• A full survey report with treatment recommendations and cost estimates

Qualifications to check for

• Certified Surveyor in Remedial Treatments (CSRT)
• Certified Surveyor in Structural Waterproofing (CSSW)
• Property Care Association (PCA) membership
• Public Liability Insurance

How long does a damp survey take?

A standard damp survey in London takes around 3 - 4 hours. Reports are usually sent within 1 - 2 days.

Damp surveys in London: Homeowners vs renters

For homeowners:

You’re responsible for diagnosing and fixing damp in your property. If you're buying a property, a damp survey can help you renegotiate the price or plan repairs before moving in. If you already own a property, acting quickly can prevent more expensive fixes later.

For renters:

Landlords are generally responsible for damp caused by structural issues or necessary repairs. Report damp to your landlord or letting agent in writing. A damp and mould surveyor near you can provide evidence if repairs are disputed.

Emergency damp survey in London

Some damp problems can’t wait, like sudden water ingress after heavy rain or leaks causing visible mould growth. In these cases, you may need an emergency damp specialist to assess and advise quickly.

Use our free search tool to browse checked emergency damp surveyors in London.

Find a damp surveyor for the job you need in London

Our checked tradespeople can help with:

• Rising damp inspections
• Penetrating damp assessments
• Condensation and mould surveys
• Basement waterproofing advice
• Pre-purchase damp surveys
• Post-repair checks

Ready to find a tradesperson committed to quality? Post a job to get started.