British Geological Survey data maps shrink-swell subsidence hazard to individual building polygons across Great Britain. It provides an overall susceptibility score (1-100) and factor-specific scores (1-10) for geology, foundation, drainage, building type, storey, and tree proximity, with aggregated postcode-level averages.
Use Cases
- Model overall subsidence susceptibility scores (1-100) against building type and storey factors to identify high-risk property archetypes.
- Analyze the correlation between tree proximity factor scores and geology factor scores to assess compounded environmental hazards.
- Aggregate building-level scores to postcode-level averages for regional insurance risk zoning and premium modeling.
- Assess foundation depth and drainage factor scores to prioritize properties for structural remediation surveys.
Strengths
- Data is produced by the authoritative British Geological Survey (BGS).
- Provides hazard scores at two geographic resolutions: individual building polygons and aggregated postcode areas.
- Includes six specific subsidence factor scores (1-10) per building, enabling detailed root-cause analysis.
Limitations
- Geographic scope is limited to Great Britain, not applicable to other regions.
- Data freshness is unknown; the hazard model may not reflect recent construction or environmental changes.
- Relies on modeled geological and building data, which may contain inaccuracies not validated by on-site inspection.
Provenance
- Source
- British Geological Survey (BGS)
- Collection Method
- Modeled by enhancing GeoSure geological data with building polygon mapping and susceptibility factors (building type, foundation depth, drainage, tree proximity).
- Time Range
- null
- Freshness
- null
- Geography
- Great Britain