Subsidence is the downward movement of the ground supporting a building, with particular problems occurring when that movement varies from one part of the building to another, producing cracks.

The three main causes of subsidence are the underlying soil, the age of the house and the proximity of trees or shrubs. Another cause of subsidence is damaged drains and the softening or washing away of soil under foundations.

Cracks are usually the first warning signs, although most buildings have some cracks due to the natural expansion and contraction of bricks caused by changes in temperature. What you should look for are small, usually diagonal, cracks – especially around doors and windows. These will usually be thicker than a 10p coin and wider at the top

If you spot a crack, the best thing to do is contact a Structural Engineer who will be able to inspect the cracks and inform you the best course of action

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