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Self-check

Underpinning checker

Answer a few quick questions about the signs you have noticed. This gives an initial read of how likely the movement is to be structural: not a diagnosis. Only an investigation confirms what is going on.

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Crack checkers

Could it be subsidence?

Have you noticed diagonal cracks wider than a 10p coin (about 3mm), often near doors, windows or corners?
Do the same cracks appear both inside and outside, or in the same place on different floors?
Have doors or windows started sticking, or do gaps show around the frames?
Is there a large tree close to the house, or has the area had a very dry spell lately?
Has the cracking appeared or widened in the last year?

Indicative only. What is actually happening is confirmed on site. Request an assessment for the definitive answer.

How the levels read

Signs point toWhat it means
Low likelihoodThe signs you described are minor and often harmless: typically seasonal or shrinkage-related. Still worth keeping an eye on.
PossibleThe combination of signs is worth a proper look. A specialist assessment will confirm whether anything structural is happening.
Worth investigatingThe signs point to possible ground movement. Book an assessment soon: early investigation keeps any repair smaller and cheaper.

Look-alikes

  • Seasonal movement: Cracks that open and close with the weather, often around windows, are usually harmless thermal movement.
  • Plaster shrinkage: Fine, shallow crazing in plaster or render is normally drying shrinkage, not structural.
  • Old settlement: A house that settled years ago and has been stable since is not showing active movement.
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