thomas7 Posted October 24, 2022 Share Posted October 24, 2022 Underpinning is the reinforcing of an existing building foundation. It is required when the original foundation is no longer strong enough to support the house. This is usually a result of a change to the soil structure, whether due to the type of soil or some external influence on the soil. & its cost around £6,000-£21,000. Quote Link to comment Share on other sites More sharing options...
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