GPR Survey London
Ground Penetrating Radar Surveys Across London
Magnitude Geo provides professional Ground Penetrating Radar (GPR) surveys across London, the Home Counties and South East England. Using advanced GPR technology, we identify rebar, post-tension cables, conduits, voids, embedded services and hidden subsurface features within concrete and below ground. Our surveys support contractors, engineers, developers and property professionals before drilling, coring, cutting and structural alterations.
Why Choose Magnitude Geo for GPR Surveys?
Magnitude Geo provides professional Ground Penetrating Radar (GPR) surveys across London, the Home Counties and South East England. Using advanced GPR technology, our experienced surveyors help contractors, engineers and property professionals identify hidden features within concrete and below ground before construction work begins.
- Advanced Ground Penetrating Radar technology
- Experienced and professional surveyors
- Fast response times across London and the Home Counties
- Detailed survey reports with clearly annotated findings
- CAD drawings and digital deliverables available where required
- Concrete scanning and underground utility GPR specialists
- Practical on-site mark-ups and survey support
- Competitive pricing with free, no-obligation quotations
From detailed survey reports and CAD deliverables to practical on-site support, we are committed to providing accurate, reliable and professional GPR survey services tailored to each project's requirements.
Request a Free Quote
Planning a construction, refurbishment or structural investigation project? Magnitude Geo provides professional Ground Penetrating Radar (GPR) surveys across London, the Home Counties and South East England.
Our experienced surveyors use advanced GPR technology to identify rebar, post-tension cables, conduits, voids, buried utilities and other hidden features within concrete and below ground. Whether you're planning drilling, coring, cutting, excavation or structural alterations, our surveys help reduce risk and support safe construction practices.
We work with contractors, structural engineers, developers, local authorities and property professionals, providing fast response times, clear reporting and practical survey solutions tailored to your project requirements.
Contact Magnitude Geo today for a free, no-obligation quotation and speak directly with an experienced member of our team about your Ground Penetrating Radar survey requirements.
Areas We Cover
Magnitude Geo provides professional rebar detection, reinforcement scanning, Ground Penetrating Radar (GPR) and Ferroscan survey services throughout Greater London, the Home Counties and South East England.
Our experienced surveyors support contractors, structural engineers, builders, developers, facilities managers and property owners by accurately locating rebar, post-tension cables, conduits and embedded services within concrete before drilling, coring, cutting and structural alterations.
We regularly work across Central London, North London, South London, East London and West London, as well as Surrey, Kent, Essex, Hertfordshire, Buckinghamshire and Berkshire. If your project is located outside these areas, please contact us to discuss your requirements.
Professional Deliverables
Magnitude Geo provides clear, professional and project-specific deliverables to support construction, engineering and refurbishment projects across London. Our Ground Penetrating Radar (GPR) surveys are designed to provide contractors, structural engineers and project managers with practical information that can be used immediately on site and throughout the project lifecycle.
Depending on the scope of works and client requirements, survey findings can be supplied in a variety of formats to assist with planning, risk mitigation and construction activities. Our deliverables are tailored to each project and can be used to support drilling, coring, cutting, structural alterations, utility investigations and engineering assessments.
- Detailed survey reports with clearly annotated findings and survey limitations
- CAD drawings showing surveyed areas, identified features and proposed working zones
- BIM-ready deliverables for integration into project models where required
- Marked-up site plans to support drilling, coring, cutting and structural alterations
- Utility mapping and rebar mapping services for construction and engineering projects
- Concrete reinforcement and post-tension cable identification drawings
- Photographic records and supporting site documentation where appropriate
- Digital PDF reports suitable for engineers, contractors and project managers
- Practical on-site mark-ups to assist construction teams during works
- Professional documentation to support project planning and decision making
Whether you require a simple GPR scan before drilling or comprehensive survey deliverables for a major infrastructure or refurbishment project, Magnitude Geo provides accurate, reliable and professional documentation to support safe and efficient project delivery.
What is a GPR Survey?
Ground Penetrating Radar (GPR) is a non-destructive survey method used to identify hidden features within concrete structures and below ground. By transmitting high-frequency electromagnetic signals into the material being surveyed, Ground Penetrating Radar can detect reinforcement, post-tension cables, conduits, voids, buried utilities and other subsurface anomalies without causing damage to the structure.
GPR surveys are widely used throughout the construction, engineering and infrastructure sectors to provide accurate information before drilling, coring, cutting, excavation and structural alteration works commence. By understanding what lies beneath the surface, contractors and engineers can make informed decisions, reduce risk and avoid costly damage during construction activities.
Ground Penetrating Radar is considered one of the most versatile non-destructive investigation techniques available today. Depending on the application, GPR can be used to investigate concrete slabs, walls, beams, columns, bridge decks, pavements and subsurface environments. It is particularly effective for identifying hidden features that cannot be observed visually.
At Magnitude Geo, we provide professional GPR survey services throughout London, the Home Counties and South East England. Our experienced surveyors use advanced Ground Penetrating Radar equipment to support contractors, structural engineers, developers and property professionals across a wide range of construction and refurbishment projects.
Whether you require a concrete scan before drilling, a utility investigation before excavation or a structural assessment as part of a refurbishment project, our Ground Penetrating Radar surveys provide clear, reliable and practical information to help ensure works are carried out safely and efficiently.
How Does Ground Penetrating Radar Work?
Ground Penetrating Radar (GPR) works by transmitting high-frequency electromagnetic signals into the material or surface being surveyed. As these signals travel through concrete, soil and other materials, they interact with objects and interfaces that possess different electrical properties. When this occurs, a portion of the signal is reflected back to the GPR equipment, where it is recorded and interpreted by experienced surveyors.
The reflected signals are displayed in real time, allowing Ground Penetrating Radar specialists to identify and map hidden features beneath the surface. Depending on the application, GPR surveys can be used to locate reinforcement, post-tension cables, conduits, buried utilities, voids, changes in material composition and other subsurface anomalies.
One of the key advantages of Ground Penetrating Radar is that it is entirely non-destructive. Unlike invasive investigation methods, GPR allows construction teams and engineers to gain valuable information without damaging the structure or interrupting ongoing works. This makes Ground Penetrating Radar one of the most widely used technologies within the construction, engineering and infrastructure industries.
The depth and quality of data obtained during a GPR survey can vary depending on several factors, including material type, moisture content, reinforcement density and site conditions. Our experienced surveyors assess each project individually to ensure the most appropriate equipment and survey methodology is used.
At Magnitude Geo, we use advanced Ground Penetrating Radar technology to support construction, refurbishment and structural investigation projects throughout London and the Home Counties. Whether scanning concrete before drilling or investigating buried features below ground, our GPR surveys provide accurate, reliable and actionable information to support safe project delivery.
What Can GPR Detect?
Ground Penetrating Radar (GPR) is a highly versatile surveying technology capable of detecting a wide range of hidden features within concrete structures and below ground. Depending on the material being surveyed, site conditions and equipment frequency, GPR can provide valuable information to support construction, engineering and structural investigation projects.
Ground Penetrating Radar surveys are commonly used throughout London to help contractors, structural engineers and project managers identify hidden obstructions before drilling, coring, cutting, excavation and refurbishment works commence. By understanding what lies beneath the surface, construction teams can reduce risk, improve safety and avoid costly delays.
- Rebar and steel reinforcement mesh
- Post-tension cables within concrete slabs
- Electrical conduits and embedded services
- Voids, cavities and subsurface anomalies
- Plastic, metallic and non-metallic utilities
- Concrete slab and wall thickness measurements
- Buried structures and foundations
- Hidden obstructions beneath floors and pavements
- Underground utility networks and ducting
- Structural features within concrete elements
- Changes in material composition
- Subsurface interfaces and construction joints
While Ground Penetrating Radar is an extremely effective non-destructive investigation method, the depth and clarity of results can vary depending on factors such as material properties, moisture content, reinforcement density and site conditions. Our experienced surveyors assess every project individually to ensure the most appropriate survey methodology is used.
At Magnitude Geo, we use advanced Ground Penetrating Radar technology to provide accurate, reliable and practical survey information across London, the Home Counties and South East England. Whether you require a concrete scan before drilling or a utility investigation before excavation, our GPR surveys help ensure projects are completed safely and efficiently.
Concrete GPR Surveys
Magnitude Geo provides professional concrete Ground Penetrating Radar (GPR) surveys for construction, engineering and refurbishment projects throughout London and the Home Counties. Our surveys are designed to provide contractors, structural engineers and project managers with accurate information before drilling, coring, cutting and structural alteration works commence.
Using advanced Ground Penetrating Radar technology, we can investigate concrete slabs, walls, beams, columns, soffits and other structural elements to identify hidden features without causing damage to the structure. Concrete GPR surveys are one of the most effective non-destructive methods for locating reinforcement, post-tension cables, conduits, voids and embedded services within concrete.
Ground Penetrating Radar is widely used across the construction industry to improve safety, reduce risk and minimise costly delays. By identifying hidden obstructions before work begins, project teams can proceed with greater confidence while protecting existing structures and avoiding unnecessary repairs.
Our experienced surveyors regularly undertake concrete GPR surveys for commercial developments, residential projects, infrastructure works, schools, hospitals and industrial facilities throughout London. Every survey is tailored to the specific requirements of the project, ensuring our clients receive clear, practical and reliable information.
Where reinforcement mapping and detailed steel reinforcement information is required, please visit our Rebar Detection London page for further information regarding our dedicated rebar detection and reinforcement mapping services.
GPR Surveys Before Drilling, Coring & Concrete Cutting
Drilling into concrete without first carrying out a Ground Penetrating Radar survey can result in damage to reinforcement, post-tension cables and embedded services. Our GPR surveys help identify hidden features before drilling begins, allowing contractors to select safe drilling locations with confidence.
Concrete coring is commonly undertaken for new pipework, electrical installations and mechanical services. Ground Penetrating Radar surveys accurately identify reinforcement, post-tension cables and conduits before coring works commence, helping reduce risk and avoid costly structural damage.Whether forming new openings, removing walls or carrying out structural alterations, Ground Penetrating Radar surveys provide valuable information before concrete cutting begins. Our surveys deliver accurate on-site mark-ups and detailed survey information, helping contractors work safely while protecting the integrity of the structure.
GPR Surveys for Structural Investigations
Ground Penetrating Radar (GPR) surveys are frequently used to support structural investigations, refurbishment projects and engineering assessments across London and the Home Counties. By providing valuable information about existing structures, GPR surveys help project teams make informed decisions before structural alterations, demolition and construction works commence.
Structural investigations are often required where limited information exists regarding a building's construction or where modifications are proposed to existing concrete elements. Ground Penetrating Radar can be used to identify reinforcement, post-tension cables, conduits, voids and other hidden features that may influence engineering design and construction methodologies.
Our GPR surveys regularly support structural engineers undertaking wall removals, new openings, extension works and refurbishment projects. Understanding the location of reinforcement and embedded services before intrusive works begin can help reduce risk, protect structural integrity and minimise costly delays during construction.
Ground Penetrating Radar is also commonly used as part of condition assessments and building investigations. Whether assessing an existing concrete slab, investigating a structural anomaly or gathering information for a refurbishment scheme, GPR provides a fast, accurate and non-destructive means of obtaining valuable subsurface data.
Magnitude Geo provides professional GPR surveys for structural investigations throughout Greater London, supporting contractors, structural engineers, developers and property professionals with clear, reliable and practical survey information. Our experienced surveyors deliver accurate findings, on-site mark-ups and professional documentation to help ensure projects are completed safely and efficiently.
Who Uses Our GPR Survey Services?
Magnitude Geo provides professional Ground Penetrating Radar (GPR) surveys for a diverse range of clients across London, the Home Counties and South East England. Whether supporting a major infrastructure project or a small refurbishment scheme, our surveys provide accurate information to help clients make informed decisions before construction work begins.
Structural Engineers
Structural engineers regularly use our GPR surveys to identify reinforcement, post-tension cables and embedded services before wall removals, structural alterations and refurbishment works. Our surveys help engineering teams better understand existing structures and reduce risk during the design process.
Contractors
Contractors rely on Ground Penetrating Radar surveys before drilling, coring, cutting, excavation and demolition activities. By identifying hidden features before work commences, our surveys help reduce costly delays, improve site safety and support efficient project delivery.
Developers
Property developers use our GPR survey services throughout the planning and construction phases of residential, commercial and mixed-use developments. Accurate subsurface information can help improve project planning and minimise unforeseen issues during construction.
Builders
Builders undertaking extensions, refurbishments and new construction projects use our Ground Penetrating Radar surveys to identify hidden obstructions before intrusive works begin. Our surveys provide practical information that helps ensure works are completed safely and efficiently.
Facilities Managers
Facilities managers often require GPR surveys before installing new services, carrying out maintenance works or undertaking alterations to existing buildings. Our surveys help protect existing infrastructure while reducing disruption to building occupants.
Local Authorities
Magnitude Geo supports local authorities with Ground Penetrating Radar surveys for public buildings, infrastructure projects and refurbishment works. Our experienced surveyors provide accurate, reliable and professional survey services tailored to the requirements of each project.
Property Owners
Homeowners, landlords and commercial property owners also benefit from professional GPR surveys before carrying out renovations, structural modifications and refurbishment projects. Understanding what lies beneath the surface before work begins can help prevent unexpected costs and protect the integrity of the structure.
Utility GPR Surveys
In addition to concrete investigations, Magnitude Geo provides professional Ground Penetrating Radar (GPR) surveys for buried utility detection throughout London and the Home Counties. Ground Penetrating Radar is particularly effective for identifying underground features that may not be detectable using traditional electromagnetic locating methods, including plastic pipes, ducts and non-metallic services.
Utility GPR surveys are commonly undertaken before excavation, piling, trenching and construction activities to help reduce the risk of utility strikes and associated project delays. By identifying hidden services before work begins, contractors and engineers can plan excavation works more safely and improve overall site safety.
Ground Penetrating Radar can assist with locating a wide range of buried features, including utility ducts, plastic water pipes, drainage systems, buried structures, foundations and other subsurface anomalies. Depending on the project requirements, GPR surveys can be undertaken independently or alongside traditional utility locating techniques to provide a more comprehensive understanding of the subsurface environment.
Our experienced surveyors regularly support utility investigations for commercial developments, residential projects, infrastructure works and refurbishment schemes throughout Greater London. Whether you're planning excavation works or undertaking a PAS128 utility survey, Magnitude Geo provides reliable and practical Ground Penetrating Radar services tailored to your project's requirements.
Frequently Asked Questions
What is a GPR survey?
A Ground Penetrating Radar (GPR) survey is a non-destructive investigation method used to identify hidden features within concrete and below ground. GPR surveys can locate reinforcement, post-tension cables, conduits, voids, buried utilities and other subsurface anomalies without causing damage to the structure.
What can Ground Penetrating Radar detect?
Ground Penetrating Radar can detect a wide range of hidden features, including rebar, reinforcement mesh, post-tension cables, conduits, voids, buried utilities, concrete thickness and structural anomalies. The effectiveness of GPR depends on site conditions, material properties and the survey objectives.
Can GPR detect rebar?
Yes. Ground Penetrating Radar is one of the most effective methods for locating rebar and steel reinforcement within concrete slabs, walls, beams and structural elements before drilling, coring or cutting works begin.
Can GPR detect post-tension cables?
Yes. GPR surveys are widely used to identify post-tension cables within concrete structures. Identifying these cables before intrusive works commence is essential to reduce the risk of structural damage and improve site safety.
Can GPR detect plastic pipes?
Ground Penetrating Radar can assist with locating plastic pipes and other non-metallic utilities that may not be detectable using conventional electromagnetic locating equipment. Detection depends on pipe size, depth, surrounding material and site conditions.
How deep can Ground Penetrating Radar scan?
The depth achieved during a GPR survey depends on factors including material type, moisture content, reinforcement density, antenna frequency and site conditions. Concrete surveys generally use higher-frequency antennas for detailed shallow investigation, while lower-frequency systems may be used for deeper subsurface utility surveys.
Is Ground Penetrating Radar non-destructive?
Yes. Ground Penetrating Radar is a non-destructive survey method that allows hidden features to be investigated without drilling into or damaging the structure or surface being assessed.
Can GPR detect underground utilities?
Yes. GPR surveys are frequently used to identify underground utilities, including ducts, drainage systems, plastic pipes and buried services. GPR is often used alongside electromagnetic locating techniques to provide a more complete understanding of the subsurface environment.
How much does a GPR survey cost?
The cost of a GPR survey depends on the size of the survey area, site access, project requirements, survey methodology and the level of reporting or CAD deliverables required. Magnitude Geo provides free, no-obligation quotations tailored to each project.
Do you provide GPR surveys throughout London?
Yes. Magnitude Geo provides professional Ground Penetrating Radar surveys throughout Greater London, including Central, North, South, East and West London, as well as Surrey, Kent, Essex, Hertfordshire, Buckinghamshire and Berkshire.
Can GPR detect voids?
Ground Penetrating Radar can help identify voids, cavities and changes in material composition within concrete and below ground. Results depend on the size, depth and surrounding material of the feature being investigated.
Why choose Magnitude Geo for GPR surveys?
Magnitude Geo combines experienced surveyors with advanced Ground Penetrating Radar technology to provide accurate, reliable and professional survey services. We offer clear reporting, practical on-site support and responsive coverage across London and the Home Counties.