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Terrafirma is delighted to announce the launch of our new SinkholeAlert

TerraSearch Assess will now identify all reported sinkholes and ground collapse within 50 metres of property or site, including important details on location, date, event information and type of sinkhole. 

SinkholeAlert accesses a 'Live' database of over 8800 sinkholes and ground collapses from across the UK, updated weekly before being located and verified by an expert geologist. 

SinkholeAlert continues Terrafirma's ambition to better educate and alert prospective homeowners to the many and varied hazards & liabilities the ground poses. If you would like more information on Sinkholes in the UK, please visit our Hidden Hazards education portal or catch up with Sinkholes: Sucked Under on Channel 5, which Terrafirma were heavily involved with. 

Protect property with a professional opinion.

TerraSearch Assess is a Regulated “CON29M-Compliant” mining and ground risk report designed to inform and protect all parties within a property transaction.

Assess uses enhanced data unavailable to the Coal Authority and other environmental report providers along with enhanced liability protection and expert interpretation to accurately quantify the risk to a property from all ground hazards, including; coal and non-coal mining, mineral planning, Oil and Gas (Fracking), Sinkholes and more.

Mine entries and underground voids associated with historical coal, metal, stone and evaporate mining often extend long distances underground beneath property and land. Additionally, hazards such as sinkholes, ground gas, fracking and mineral planning can have significant impact on property and land. In the event a mining void collapses, subsidence occurs, or mineral planning is granted within the vicinity of the Site, the result can be substantial damage and/or loss of value.

TerraSearch Assess satisfies and enhances Lender and Law Society due diligence, providing the ideal solution to those parts of the country where ground hazards exist and mortgage lenders, insurers and prospective purchasers require an enhanced level of interpretation and a protected professional opinion, before deciding whether to lend or commit to purchase.

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TerraSearch Assess provides a first Combined Mining and Ground Risk report, including an expert assessment of all mining, mineral planning, fracking and sinkhole hazards based upon industry standard and innovative new data sources. 

Each report includes a professional opinion, protected by Terms and Conditions that include a £10 million Professional Indemnity Policy, ensuring the client is better covered from incorrect or missing information.

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Key Features of the terraSearch Assess: 

  1. Regulated Residential and Commercial “CON29M-Compliant” mining and ground risk report, providing a single report for all ground hazards due diligence.

  2. All official licensed Coal Authority (TCA), British Geological Survey, Environment Agency, Ordnance Survey and Historical Mapping. The report also utilises additional data sources unique to Terrafirma.

  3. Coal and Brine Report Indemnity Policy of up to £50,000 loss in market value of the property

  4. SinkholeAlert: Additional Search for all reported Sinkholes included within the report.

  5. Additional professional interpretation included within report and Site plan and a “Pass” or “Further Action” outcome with professional opinion to be inserted into a client care letter.

  6. Delivered between 2 and 4 days


Interested in the TerraSearch Assess Report?

Explore a Residential TerraSearch Assess Sample report by using the link to the right. Contact us for further residential and commercial sample reports.


To explore the benefits and features within the TerraSearch Assess reports, please use the link on the right to read and download the product card.


Please contact a Terrafirma Partner if you would like to find out more information or would like to discuss using the TerraSearch Assess Reports.