Early Detection Saves Thousands
Warning Signs of Subsidence in Southern England Homes
Know what to look for and when to take action
Take Action Now
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Cracks wider than 3mm
Especially if getting wider
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Diagonal cracks near corners
Running from doors/windows
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Multiple areas affected
Not just one isolated crack
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Bulging or leaning walls
Visible bowing externally
Usually Not Subsidence
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Hairline cracks in plaster
Usually just settlement
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Vertical cracks at joins
Where extensions meet
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Single isolated crack
No other symptoms
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Cracks less than 1mm
Normal building movement
Visual Identification Guide
Property Foundation Issues
Terrace and brick properties showing signs of movement. Classic subsidence pattern requiring investigation.
Brick Structure Assessment
Close inspection of brickwork and mortar in properties. Foundation movement can cause visible issues in older buildings.
Room-by-Room Inspection Checklist
Living Areas
- • Check corners where walls meet ceiling
- • Look around fireplaces and chimneys
- • Test if doors close properly
- • Check for gaps at skirting boards
Bedrooms
- • Inspect around all windows
- • Look for cracks above door frames
- • Check if wardrobes sit level
- • Feel for sloping floors
External
- • Walk around entire perimeter
- • Check brickwork for stepped cracks
- • Look at bay windows for gaps
- • Inspect where pipes enter walls
Regional Patterns to Watch
Victorian/Edwardian Properties
Built with shallow strip foundations and lime mortar. Watch for:
- Bay window separation from main wall
- Cracking in party walls between terraces
- Movement after tree work nearby
Areas with Historic Chalk or Clay Workings
Some Southern England properties near former workings may show:
- Sudden movement without obvious cause
- Multiple properties affected together
- Historic repair evidence from 1960s-80s
Spotted Warning Signs?
Don't panic, but don't delay. A professional assessment will give you certainty and options.
Most subsidence repairs are covered by insurance (minus excess)