If you are dealing with a site that has potential subsidence or ground movement issues, you may require a Ground Stability Assessment. Refer to our ties to UK-wide and highly experienced geo-environmental consultants.
Last updated: March 2026
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Navigating planning permission where subsidence or historical mining is a factor can be tricky. We provide a comprehensive ground stability assessment to ensure your project stays on solid ground and meets all local authority requirements.
To give you the best results, our in-house experts carry out the initial, detailed desk study. For the physical site investigation and any technical geotechnical work, we then bring in one of our trusted partner companies. This collaborative approach ensures you get a professional ground stability report that satisfies your planning conditions without any unnecessary delays.
If you need to confirm your site is safe for development, we can help.
Initial Desk Study: Our team reviews historical maps, geological data, and Coal Authority records to identify potential risks.
Site Investigation: We coordinate with our specialist partners to conduct on-site testing, borehole drilling, and soil analysis.
Risk Mitigation: Get expert advice on soil reinforcement, foundation modifications, or drainage improvements if hazards are found.
Regulatory Compliance: We ensure your report aligns with the National Planning Policy Framework and building regulations.
Need to secure your site’s future? Start your assessment today.
Ground stability refers to the ability of the ground to remain structurally sound and not undergo movement, such as subsidence, landslides or settlement, that could impact buildings, infrastructure, and natural landscapes.
The stability of the ground depends on various geological, hydrological, and man-made causes. Issues such as soil composition, groundwater levels, past coal mining activities, past brine pumping, quarry excavations, slope geometry and subsidence create potential hazards which may all contribute to ground stability concerns.
A ground stability report is an evaluation of the potential risks associated with land stability issues. This assessment examines geological conditions, previous land use such as coal mining and environmental factors to determine whether an area is prone to unstable land and ground movement.
The findings of the assessment inform construction and development plans to ensure health and safety safeguards are adhered to and compliance with relevant regulations such as building regulations and permitted development rights.
A ground stability report is carried out by a geo-environmental consultant and typically involves a comprehensive desk study using geological information and maps.
Natural hazards and problems resulting from man made causes will be taken into account and a site investigation may be followed by geotechnical investigations such as borehole drilling and soil testing to assess the make up of the ground. The necessary data is complied into a ground stability report that can be presented to a local authority.
In cases where significant risks or potential hazards are identified, stability surveys may recommend mitigation measures such as soil reinforcement, drainage improvements or foundation modifications.
These assessments are crucial when considering a development project for several reasons:
The following scenarios typically require professional reports:
There are several types of ground stability surveys to suit the specific risks and requirements of a project:
The requirement for a land stability assessment depends on location, land history, the type of development that is planned for the land and the local authority in question.
In the UK, a planning authority will often require stability assessments for developments in high-risk areas, such as former mining sites or regions prone to natural subsidence.
While not universally mandatory, assessments are strongly recommended for due diligence and to fully understand potential hazards when it comes to ground instability risks, particularly when acquiring land or property.
The UK planning system recognises land stability as a key factor in sustainable development. The National Planning Policy Framework emphasises the importance of considering ground stability risks in planning decisions. Local planning authorities must ensure that proposed developments do not increase risks related to land instability and that a site operator puts appropriate mitigation measures in place.
Several natural geological factors contribute to unstable locations and subsidence hazards in the UK, including:
Responsibility for land stability varies depending on the specific circumstances:
Ground stability surveys are an essential part of land development, infrastructure planning, and property risk management. While not always legally required, they play a crucial role in ensuring safety, regulatory compliance, and long-term land use sustainability.
Data from the British Geological Survey, Coal Authority, and Mining Redemption Authority provides valuable insights into ground stability issues, helping stakeholders make informed decisions about land use and development.
As land instability remains a significant concern in the planning system, proper assessment and mitigation strategies are vital to minimising risks and safeguarding future developments.
If you are concerned about a land instability issue or need to present a ground stability report with a planning application, Arbtech has an ongoing relationship with a knowledgeable geo-environmental consultancy. They cover the UK and are adept at carrying out these assessments. For further information, complete the contact form at the top of this page.
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