Soil type, precipitation records and surrounding vegetation all impact the risk of soil subsidence. The Climate Risk Engines analyse the risk of soil subsidence due to drought using information on annual precipitation records, soil types and surrounding vegetation.
The type of foundation used for a property is key in determining its susceptibility to damage due to soil subsidence. While the materials used for foundations are important, the physical design of the foundation is the distinguishing factor.
The deeper the foundational pillars can reach, the more stability they can offer the property. Deeper foundations generally reach depths of more than 3 metres, can bear more weight and are better suited to weaker ground. Buildings on light strip footings or unstiffened slabs are vulnerable to soil movement as they have a lower weight-bearing capacity and can be at risk of movement.