10 Property Problems You Should Never Ignore Before Buying a Home
Buying a property is a major financial commitment, and a property that looks perfect during a viewing can still have defects that are difficult or expensive to identify without professional experience.
From structural movement and damp to roof problems, timber decay and poorly executed alterations, some issues deserve much more attention than a cosmetic problem.
A professional building survey can help you understand the condition of a property before you become legally committed to the purchase. Structura Surveying provides RICS-qualified surveying services across Essex and London, with inspections designed to identify defects and provide practical advice before buyers proceed.
1. Structural Cracks
Not every crack indicates a serious structural problem. Some are caused by normal settlement, shrinkage or movement in finishes.
However, cracks that are wide, progressive, stepped, diagonal or associated with distortion around doors and windows deserve closer investigation.
A surveyor will consider:
- The location of the crack
- Its direction and pattern
- Whether it appears recent or historic
- The construction type
- Nearby drainage and trees
- Evidence of wider movement
The important point is that a crack should be assessed in context rather than automatically dismissed or labelled as subsidence.
2. Signs of Subsidence or Ground Movement
Subsidence occurs when the ground supporting a building moves or loses stability.
Possible warning signs include:
- Diagonal cracking
- Cracks around openings
- Sloping floors
- Distorted doors and windows
- Repeated cracking after repairs
- Separation between extensions and the main building
London and parts of Essex contain areas where ground conditions can contribute to movement, making appropriate assessment particularly important.
3. Damp and Moisture
Damp is one of the most common problems encountered in residential properties.
However, “damp” can have several causes, including:
- Rising damp
- Penetrating damp
- Plumbing leaks
- Roof defects
- Poor external drainage
- Condensation
These problems require different remedies, so identifying the likely source is more useful than simply recording the presence of moisture.
4. Roof and Chimney Problems
A roof can represent a significant future maintenance cost.
During a survey, visible issues may include:
- Damaged roof coverings
- Defective flashing
- Failed pointing
- Blocked or damaged gutters
- Chimney deterioration
- Signs of water ingress
- Timber deterioration
Older London properties can have particularly complex roof and chimney arrangements.
5. Timber Decay and Woodworm
Older properties may contain timber elements that have been exposed to moisture over many years.
Look for:
- Soft or damaged timber
- Fungal decay
- Wood-boring insect activity
- Damaged roof timbers
- Deteriorated floor joists
A survey can identify visible concerns and recommend further specialist investigation where necessary.
6. Poor Extensions and Alterations
An extension may look attractive but still contain construction or structural problems.
A surveyor should consider:
- How the extension connects to the original building
- Signs of movement
- Roof junctions
- Drainage
- Damp
- Cracking
- Evidence of poor workmanship
Where significant alterations have been carried out, a Level 3 Building Survey may provide a more appropriate level of inspection.
7. Drainage Problems
Drainage defects can contribute to damp, structural movement and damage to foundations.
Potential warning signs include:
- Persistent damp near external walls
- Blocked gullies
- Damaged drainage runs
- Unusual smells
- Standing water
- Repeated drainage problems
Where drainage is suspected to be contributing to a defect, additional investigation may be required.
8. Previous Structural Repairs
A property that has already undergone underpinning, crack repairs or other structural work deserves careful attention.
The key question is not simply:
“Has the property had structural repairs?”
It is:
“Why were the repairs needed, were they successful, and is there evidence of continuing movement?”
Previous repair documentation can therefore be extremely useful.
9. Boundary and Access Problems
Not every property problem is inside the building.
Boundary disputes, encroachments, shared structures and access issues can create complications between neighbouring owners.
If a boundary concern is identified, it may require a specialist boundary survey rather than simply being treated as a general building defect.
10. Hidden Repair Costs
One of the biggest risks of buying without a suitable survey is discovering expensive work after completion.
Potential costs can include:
- Roof replacement
- Damp remediation
- Structural repairs
- Timber treatment
- Drainage repairs
- Masonry repairs
- Rebuilding defective extensions
A survey does not eliminate these risks, but it can help you understand them before making a final purchasing decision.
What Should You Do If You Find a Property Problem?
Don’t automatically walk away from the property.
Instead:
- Identify the problem.
- Establish its likely cause.
- Determine whether further investigation is needed.
- Understand the likely repair implications.
- Obtain specialist advice where appropriate.
- Consider the findings before exchange of contracts.
When Should You Arrange a Building Survey?
A building survey can be particularly useful when buying:
- Older properties
- Period homes
- Extended properties
- Non-standard construction
- Properties with visible defects
- Properties requiring renovation
- Buildings with a history of structural repairs
Structura Surveying’s Essex and London Building Survey services are designed to provide buyers with a detailed understanding of property condition before they proceed.
A property viewing tells you what a home looks like. A professional survey helps you understand what may be happening beneath the surface.
Cracks, damp, subsidence, roof deterioration, timber defects, alterations and boundary issues should not automatically be ignored simply because a property appears attractive.
If you are buying a property in Essex or London and want an independent assessment of its condition, arrange a professional building survey before you become legally committed to the purchase.
Frequently Ask Questions
What is the biggest problem to look for when buying a house?
There is no single problem that applies to every property. Structural movement, damp, roof defects, poor alterations and drainage problems can all create significant repair costs.
Should I get a survey if the property looks fine?
Yes. Many defects are not obvious during a normal viewing.
Can a building survey identify subsidence?
A surveyor can identify signs consistent with structural movement and recommend further investigation where necessary.
Should I buy a house with cracks?
Not necessarily. The significance of cracks depends on their type, location, cause and severity.