When a property looks fine, problems can still be hiding
During a viewing, most homes look ‘good enough’. Fresh paint, new carpets and tidy rooms can make it feel like the property is in great condition.
But a survey looks past the cosmetic finish and focuses on the building itself. It highlights defects that could affect safety, future maintenance costs, insurance, or even your mortgage.
Below are five of the most common issues found during a survey, why they matter, and what buyers can do next.
1. Damp and moisture problems
Damp is one of the most frequent issues flagged in home surveys. It can show up in several ways, including:
- Condensation caused by poor ventilation
- Penetrating damp from damaged gutters, downpipes or external walls
- Rising damp in older properties, where moisture travels up from the ground
Damp is not always obvious during a viewing. It can be hidden behind furniture, masked by recent decoration, or only appear at certain times of year.
What to do next: Your survey may recommend further investigation by a damp specialist, plus practical steps such as improving ventilation, repairing rainwater goods, or addressing external ground levels.
2. Roof defects and missing maintenance
Roofs take the brunt of the weather, so it is common for surveys to identify issues such as:
- Missing, slipped or cracked tiles or slates
- Worn flashing around chimneys and roof junctions
- Sagging areas that could indicate underlying problems
- Blocked gutters contributing to damp
Even small roof defects can lead to water ingress and timber decay if left unresolved.
What to do next: If defects are noted, it is sensible to get a roofer to inspect and quote before you exchange contracts. This gives you clarity on likely costs and whether repairs are urgent.
3. Movement and cracking
Cracks are common in many homes, especially older properties. The key is understanding what the cracking might indicate.
Surveyors will consider factors such as the crack’s location, width, pattern and whether there are other signs of movement. Some cracking is minor and linked to natural settlement or thermal movement. Other cracking may suggest more significant issues, including structural movement.
What to do next: If your survey raises concerns, it may recommend monitoring, further investigation by a structural engineer, or checking for related issues such as drainage problems or nearby trees.
4. Timber defects, including rot and wood-boring insects
Timber problems are another common finding, particularly in older homes or properties with poor ventilation.
Typical issues include:
- Wet rot linked to long-term moisture
- Dry rot (less common, but serious)
- Wood-boring insect activity (often referred to as ‘woodworm’)
Timber defects can affect floor structures, roof timbers, window frames and other key elements.
What to do next: If the survey identifies timber concerns, you may be advised to arrange a specialist timber inspection. In some cases, repairs are straightforward. In others, the cause of moisture must be addressed first.
5. Drainage and rainwater disposal issues
Drainage problems are easy to miss during a viewing, especially in dry weather. Surveys often highlight warning signs such as:
- Blocked or damaged gutters and downpipes
- Poor ground drainage leading to standing water
- Defective drains that could contribute to damp or movement
Rainwater disposal matters because it affects the building’s long-term condition. Persistent overflow or pooling can increase the risk of damp and, in some cases, contribute to subsidence.
What to do next: Your survey may recommend clearing and repairing gutters, checking drainage runs, or arranging a CCTV drain survey if there are signs of defects.
What if your survey finds one of these issues?
Finding defects can feel worrying, but it is also the point of getting a survey. Most properties have some issues, and many are manageable once you understand what they are and what they will cost to put right.
A good next step is to:
- Speak to your surveyor to clarify what is urgent and what is routine maintenance
- Get quotes from relevant specialists before you exchange
- Use the information to plan repairs or renegotiate if appropriate
How Walker Dunn can help
At Walker Dunn, our RICS-qualified surveyors provide clear, practical reports that explain what we have found and what it means for you as a buyer.
We aim to make the process simple by arranging access with the agent or seller, delivering your report within three working days, and talking you through the findings if you have questions.
If you would like a clearer picture of a property’s condition before you commit, you can request a free quote using our online form or call our friendly team on 01695 355005.
Sources
This article is based on general guidance about common defects identified in UK home surveys and building maintenance principles. For a buyer-focused overview of surveys and defects, see:
- Royal Institution of Chartered Surveyors (RICS), Home surveys (consumer guidance)
- UK Government, Buying and selling your home (process overview)