If you are worried about damp in your home, booking a damp survey in Surrey is one of the most effective ways to get clear answers. A proper survey looks beyond surface stains and musty smells to find the real cause of the problem. In this guide, we explain when you should consider a damp survey, what actually happens on the day, typical costs, and how to use the report to plan repairs and prevention.
When should you book a damp survey in Surrey?
Many homeowners only think about a damp survey when a problem has already become severe. In reality, you should consider a survey if you notice:
- Persistent musty smells that do not go away with cleaning
- Black mould around windows, in corners, or behind furniture
- Tide marks or dark patches on walls and skirting boards
- Peeling wallpaper, bubbling paint, or crumbling plaster
- Cold, clammy walls or floors even when the heating is on
If you are buying a property and a home survey mentions damp, a dedicated damp survey in Surrey gives you a clearer picture and helps you negotiate with confidence. For an overview of common warning signs, see What Are the Signs of Damp in a Property?.
Who carries out a damp survey?
A good damp survey should be carried out by a trained damp specialist, not just a general tradesperson. Look for companies that focus on damp proofing, timber treatment and insulation, and are recognised by industry bodies. The Property Care Association (PCA) lists approved contractors and surveyors with specialist training in damp diagnosis.
At Go2 Property Services, damp surveys are carried out by experienced surveyors who understand how issues like condensation, rising damp and penetrating damp interact with insulation, timber and finishes. You can read more about our services on the Damp Proofing page.
Before the survey: questions and preparation
Before visiting, the surveyor will usually ask a few questions about the property and the problems you have noticed. Typical questions include:
- How long you have seen signs of damp or mould
- Whether the property has had damp treatment before
- Any recent changes, such as new windows, insulation, or leaks
- Which rooms are most affected and at what time of year
To prepare for a damp survey in Surrey, clear access to affected walls where possible. Move furniture slightly away from external walls, lift items off the floor, and avoid painting over damp patches shortly before the visit, as this can hide useful clues.
What happens during a damp survey?
Although every property is different, most surveys follow a structured process:
1. External inspection
- Checking roof coverings, flashings and chimneys for obvious defects
- Inspecting gutters, downpipes and drainage for leaks or blockages
- Looking at external walls for cracks, missing pointing or porous brickwork
- Confirming the height and condition of any damp-proof course
2. Internal inspection
- Examining walls, skirting boards, ceilings and floors for staining or distortion
- Measuring moisture levels with handheld meters
- Checking ventilation in kitchens, bathrooms and bedrooms
- Looking for signs of condensation, rising damp, or penetrating damp
3. Identifying the type of damp
Based on the evidence, the surveyor will determine whether you are dealing with condensation, rising damp, penetrating damp, or a combination of issues. For example, tidemarks and salts near ground level suggest rising damp, while localised patches higher on walls may point to penetrating damp from a defect outside.
What the damp survey report includes
After the inspection, you should receive a written report that typically includes:
- A summary of the key findings and likely causes
- Photographs or diagrams showing affected areas
- Moisture readings and an explanation of what they mean
- Recommended treatments and ventilation improvements
- An outline of any further investigations needed
A clear report helps you prioritise repairs and understand what is urgent versus what can be monitored over time. For general advice on identifying, treating and preventing damp, you can also read Identifying, Treating and Preventing Damp in UK Homes.
How much does a damp survey cost?
Industry cost guides suggest that a damp survey in the UK typically ranges from around £150 to £500, depending on the size and complexity of the property. A simple inspection for a small flat may sit at the lower end, while a full damp and timber survey for a larger house with multiple issues will be higher. Recent guides from MyBuilder and Checkatrade outline similar ranges:
In Surrey and the South East, prices may sit towards the upper part of these ranges due to higher labour and property costs. At Go2, we provide clear, itemised quotes so you understand exactly what is included.
What happens after the survey?
Once you have your report, you can decide how to proceed. In some cases, simple steps such as improving ventilation, repairing gutters, or upgrading insulation may be enough. In others, you may need targeted treatments such as:
- Repairing or installing a damp-proof course
- Applying internal or external waterproofing systems
- Replacing damaged plaster with suitable breathable materials
- Improving extraction and condensation control
For a deeper look at how damp repairs fit into overall property maintenance, visit our Damp Proofing page or contact us directly via the Contact page.
Why choose Go2 for a damp survey in Surrey?
Go2 Property Services has over 25 years of experience working on properties across Surrey, London and Berkshire. We specialise in damp proofing, timber treatment, insulation, plastering and render, so we can diagnose the full picture rather than treating one symptom in isolation. We also hold recognised trade accreditations, including listings with Which? Trusted Traders and TrustMark-approved schemes, giving you extra reassurance that your home is in safe hands.
If you are concerned about damp or mould, the best time to act is now. A professional damp survey in Surrey will give you clear answers and a practical plan to protect your property for the long term.
