Subsidence risk by area

The three area-level drivers screened here are clay shrink-swell (clay soils shrinking in dry summers and swelling when wet, which is the commonest UK cause and worsening with climate change), past coal or other mining (ground disturbance from historic workings), and recorded landslides (slope instability). Trees, leaking drains and made ground are property-level factors only a survey assesses.

No. These are AREA-LEVEL indicators from the British Geological Survey and Mining Remediation Authority, generalised for national overview on roughly 50-metre to hex-scale grids. They describe the ground around an outcode, never a single home, and carry no distance-to-mine-shaft claim. Whether a specific property is affected depends on its plot, foundations, trees and drainage.

Not automatically. Area-level ground risk can raise buildings-insurance premiums or prompt a lender to ask for a survey, especially where a property has a movement history. A survey-confirmed subsidence claim is far more material than an area screening. Always get a buildings-insurance quote on the specific address before you commit.

Great Britain (England, Wales and Scotland), using BGS and Mining Remediation Authority data. Northern Ireland is served by the Geological Survey of Northern Ireland. Any GB outcode can be checked. The areas below are the ones carrying a real ground signal; where an area's reading is the regional default (clay-belt London, for instance, where the same clay class, no coalfield and no recorded landslides repeat across dozens of outcodes), we publish the page but keep it out of search rather than add a page that repeats its neighbours.