Cavities Database
Understanding ground instability risks
Ground instability poses subsidence—caving in or sinking—risks to existing services, infrastructure, and buildings as well as to new-builds and the public. The National Planning Policy Framework (NPPF 2021 Clause 183) requires that all new development sites are checked for potential ground instability risk.
Extensive and readily accessible, our system was originally compiled as part of national studies published in the 1980s. Today, the Cavities Database contains over 32,000 records—and we’re adding more every year.
Our Cavities Database allows you to quickly check for potential instability and identify locations for further assessment.
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Why choose Cavity Database?
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Meet Regulations
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Comprehensive Data
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Quick Identification
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Detailed Records
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Archive Library
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Follow On Services
Meet Regulations
Satisfy NPPF 2021 Clause 183 for a site potentially at risk from ground instability.
Comprehensive Data
Gain access to over 32,000 records.
Quick Identification
Detect locations that require special attention.
Detailed Records
National Grid Reference (NGR) defines the position of individual cavities and cavity polygons which cover wider areas.
Archive Library
Access an extensive body of additional background reference information.
Follow On Services
We can provide ground investigation, remedial assistance, and expert witness service.
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