Underground Utility Mapping Surveys to PAS128 Standards

Working across London & the rest of the UK, we assist construction professionals with industry standard buried utility detection surveys.

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.

THS Concepts are a modern surveying company with a vast accumulation of survey experience, whether that be on land, at sea, inside buildings or below ground.

Utilising innovative locator and GPR technologies, we undertake PAS128-standard surveys to any level required in order to record buried utilities such as drainage, water, gas, BT and electric services. Our team collect data using Total Stations and GPS instruments and provide you with accurate scaled drawings.

We can combine our utility mapping services with topographical and measured building surveys to give you a comprehensive site analysis; ideal for identifying and connecting to services, mitigating cable strikes during ground works or submitting applications such as planning or build-over agreements.

Our Service Includes:


Site Survey

Drawings Package

After Care

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.

Frequently Asked Questions

Get A Quote For Your Project Today

Tell us about your project and we will get back to you as quickly as possible with a formal quotation for the works. Your quote will include:

  • A fixed price to undertake the required works
  • Proposed survey & drawing return dates

Alternative Ways To Contact Us

Get A Quote For Your Project Today

Tell us about your project and we will get straight back to you with a formal quotation for the works. Your quote will include:

– Fixed price to undertake the required works.
– Proposed survey & drawing return date.

Alternative Ways To Contact Us