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Precise level surveys and data to assist in your project.

Verification Surveys • Concrete Slabs • Roofing • Drainage

THS Concepts undertake detailed level surveys for building contractors looking to verify the precise heights of elements such as flat roofs, concrete slabs, drainage runs and more.

Established in 2013, we are a modern land and building survey company working with construction professionals to provide reliable, accurate and detailed information for your projects.

Operating across London and the South East, our experienced team use the latest Leica equipment from total stations to 3D scanners. We ensure your level survey requirements are undertaken quickly and cost effectively.

We typically work with the principal contractors on site who are looking to verify a subcontractor’s work, for example verifying a recently-poured concrete slab.

Level Survey FAQ's

Get a Quote For Your Project

Are you looking for someone to talk to about your project? Please contact us via phone, email, or through the contact form. Monday through Friday, 9 a.m. to 5 p.m., our office is open.

What You Will Receive From THS Concepts

Site Survey Service

Our experienced survey team visit your site and undertake a detailed level survey to your requirements. We utilise modern Leica surveying equipment to accurately survey what you require.

CAD Drawings / Information

Following your level survey, you receive your DWG CAD file / report illustrating levels in a format to your requirement. This could be in the form of a table or a drawing.

PDF Drawings

We also provide your drawings in PDF format, allowing you to easily print, mark up and measure both in the office and while out on site.


Our surveyor takes plenty of photos on site, which are often useful during your project. We can send these in an easy-to-download Dropbox Link.

After Care

We ensure you are 100% satisfied with the drawings and service we provide. Updates and amendments are no problem and are undertaken quickly to get your project moving.

CAD Advice & Tips

We love helping you with projects! If you have an issue with CAD or need some tips to work effectively then we are quite happy to help, free of charge.

Why Do Our Clients Choose Us?

Excellent 5 Star Reviews

We are proud of the service we provide our clients, which is demonstrated in our 5 star Google and Trustpilot reviews left for us.

Experienced Company

As of December 2020, we have completed over 1575 small and large surveying projects across the UK and internationally.

Care For Our Customers

We ensure you are 100% satisfied and happy with the surveys, drawings and service we provide before and after the project is completed.

Environmentally Responsible

We are corporate supporters of the Essex Wildlife Trust and are actively working on projects to reduce waste in Surveying.

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.

Key Benefits Our Our Level Survey Service

Avoid costly claims

A claim on your subcontractor’s work can be financially damaging. Checking work such as the integrity of a flat roof job is important. Poor workmanship can lead to low or high spots that can lead to water pooling. Fixing such problems is costly and can be avoided with a professional level survey.

Useful data, drawings and information

It’s all well and good having a survey, but if the results you receive are difficult to understand and view then what is the use of it? We produce drawings with your requirements in mind. Your level survey data is produced in easy to read drawings. We can present data in formats such as heat maps, contour maps, coloured high or low points etc.

Accurate survey data

Gaining precise survey data for future design or construction work ensures your project goes smoothly. Problems with low or high spots on a concrete slab can be quickly spotted and accounted for early in the project. This will make things go smoother and reduce costs.

Great client relationships

We aim to make your life as easy as possible. Our 4.9 star Google & “great” Trustpilot reviews demonstrate the level of customer service we provide both before and after a project has finished.

Know that you are covered

As a professional surveying company, we carry all the relevant insurance to give our clients confidence in what we produce. We offer a money-back guarantee on all our work and have £5 million in both professional and public liability insurance.

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 work. Your quote will include:

  • A fixed price for carrying out the necessary work
  • 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 back to you as quickly as possible with a formal quotation for the work. Your quote will include:

  • A fixed price for carrying out the necessary work
  • Proposed survey & drawing return dates

Alternative Ways To Contact Us

Level Survey Photos / Drawings