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Underground Utility Surveys

Surveying underground across London & the UK to PAS128 standards

Working with construction & asset maintenance professionals across London & the United Kingdom, our team use the latest detection systems to produce reliable utility survey drawings in accordance with PAS128.

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Are you aware of your specific needs and/or wish to include files? Please complete our detailed form here.

What Is a Utility Survey?

A utility survey is a detailed investigation conducted to identify and map underground utilities such as gas, water, electricity, telecommunications, and sewer lines. Using various techniques like ground-penetrating radar (GPR), electromagnetic location (EML), and CCTV drainage surveys, utility surveys ensure accurate data collection. This information is crucial for construction, excavation, and maintenance projects, helping to avoid utility damage, reduce risks, and ensure safety and compliance with regulations.

Benefits of 3D Utility Surveys

Enhanced Safety and Risk Mitigation

Utility scanning before construction enhances safety by identifying underground utilities like gas, water, and electricity lines. Knowing their precise location prevents accidental damage, reducing risks of hazardous leaks and electrical shocks, ensuring a safer environment for workers and the public.

Cost Efficiency and Project Planning

Conducting a utility survey leads to better cost efficiency and planning. Accurately locating utilities helps avoid unexpected strikes, reducing costly repairs and delays. This foresight allows for effective budgeting and scheduling, keeping the project on track and within budget.

Regulatory Compliance and Environmental Protection

Utility scanning ensures compliance with regulations requiring the identification of underground utilities before construction. This avoids legal penalties and promotes responsible practices. It also protects the environment from potential contamination and preserves natural resources by preventing utility damage.

Our Service Includes:

On-Site Precision Survey

Our service offers precision surveys compliant with PAS 128 standards, including non-GPR options. Benefit from the expertise of our experienced technicians who document buried utilities such as drainage, water, gas, BT, and electrical services. We utilise advanced Leica GPS technology for accurate recording to national grid coordinates, ensuring precise and reliable data.

Detailed DWG CAD/PDF Drawings

Access clear and organised AutoCAD DWG drawings and site plans, allowing easy identification of various underground utilities on your site. Our detailed drawings include cable locations, depths, sizes, and directions, providing you with a comprehensive understanding of the underground infrastructure.

Site Photographs

Receive high-quality photos taken during our surveying process. These photographic records enable you to visualise the surveyed area, enhancing your understanding and documentation of the site.

Example Utility Survey Drawings

Recent Reviews

Andrew Kemp
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They are very financially competitive and very helpful. I would definitely recommend them and will be using them for any projects in the near future.
Edward Sadler
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Proactive on site and quick. Customer service is of the highest level as well. Will be using for all future projects.
Courtney O'Brien
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I had a great experience with THS ... Our architect was very pleased with their output. Would certainly use them again.
Anthony Kyrke-Smith
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Very efficient service with quick turnaround. ... I have used THS-Concepts before and I will again, when I next need a detailed survey.
Chris Hildrey
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Excellent service creating a measured survey of a very complex building in central London. The process was smooth, communication was excellent throughout, and the results were impeccable.
Charlott Peters
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Great service. Communication was great, our emails was replied to promptly, the service was efficient and conducted in a timely fashion. Highly recommended!
Rachel Halley
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I used THS to do a building survey with floorplans for a property in London, I would highly recommend them. They kept me informed of progress and delivered exactly according to the agreed scope.
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Why Choose THS Concepts For Utility Surveying?

Full TSA Member

THS Concepts are an accredited member of The Survey Association body.

UK Wide Service

We operate across the United Kingdom and internationally.

Years Of Experience

THS Concepts was formed over 10 years ago in 2013.

Fully Insured

£1 million in liability cover, employers and public liability.

Excellent Service

5 Star / excellent reviews on both Trustpilot & Google Reviews

Why Choose THS Concepts For Utility Surveying?

PAS 128 is the Publicly Available Specification for underground utility detection, verification, and location in the UK. It sets the standard for the accuracy and reliability of utility surveys, ensuring that data collected is consistent and dependable.

Importance of PAS 128:

Standardisation

PAS 128 provides a uniform framework for utility surveys, ensuring that all surveys meet a high standard of quality. This consistency is crucial for comparing data across different projects and for ensuring reliable results.

Risk Reduction

By adhering to PAS 128, surveyors can more accurately locate and identify underground utilities, reducing the risk of utility strikes during construction. This enhances safety for workers and the public, and prevents costly damages and delays.

Enhanced Project Planning

Accurate utility data is vital for effective project planning and design. PAS 128 ensures that the information gathered is precise, helping project managers make informed decisions, avoid unexpected issues, and optimise resource allocation.

Compliance and Best Practices

Following PAS 128 demonstrates a commitment to industry best practices and regulatory compliance. This can be important for securing project approvals and maintaining professional standards in construction and engineering projects.

All utility survey quotes are individually estimated based on the size and complexity of the project. Factors such as your appropriate PAS128 detection method will influence the amount of time required to complete the works.

Our prices are competitive so please don’t hesitate to get in touch for a free no-obligation quotation.

We are experienced multi-disciplined surveyors who pride ourselves on the quality of our work. We operate to industry survey and drawing standards, utilising modern detection equipment. Our 5 star reviews on Google and Trustpilot reflect our attention to detail and client care.

If you’re a construction professional such as an Architect or Engineer, you can have confidence in our range of expertise and cross-capability of survey outputs. Our team can deliver topographical, measured and utility surveys to provide you with a combined analysis of your site – suitable for planning applications, construction detailing, build-over agreements, structural design and connecting to existing services.

For property owners who’ve been asked to commission a utility survey – you can be sure we are undertaking our work to the industry standards you expect at a fixed price.

We are fully insured for everything we do, including £1million in professional indemnity.

We undertake utility surveys in the counties surrounding our offices. These include:

  • London
  • Essex
  • Kent
  • Hertfordshire
  • Sussex
  • Surrey
  • Buckinghamshire

However, we have been much further afield within the UK and internationally. We have undertaken surveying work in France, Spain and even as far away as Liberia in West Africa.

If you would like a quote for a project, please get in touch.

This depends on the size and complexity of the project. Typically we are able to get to your site within two weeks, and drawings are usually issued a week later. We always maintain communication with our clients and update you throughout the survey and drawing processes.

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A utility surveyor scanning for underground services on a pavement.

Do You Your Utilities Surveyed?

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– Fixed Price Quotes, Returned Quickly.
– Speedy Surveys, Drawings & Reports.

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