“For insurance purposes subsidence is defined as the downward movement of a building and its foundations caused by the loss of support of the site beneath the foundations. This is usually associated with volumetric changes in the ground supporting the foundations.” (Source: Subsidence of Low-Rise Buildings, Institution of Structural Engineers, 2000). 

We’ve investigated hundreds of cases of foundation movement, and the resulting cracks in buildings, caused by subsidence and settlement. We’ve built-up a good reputation for providing independent advice on what caused the damage and what the repairs should involve.