THS Concepts Logo - White

Drone Surveys & Roof Inspection

Safe inspections of roofs across London & the UK.

5 gold stars in a row
Read our Google reviews

Health & Safety – Much safer than conventional in-person checks.

• High detail – Surveys undertaken DJI drones with high resolution photos.

• Quick checks – We can get to your property quickly.

• Qualified – Our pilots are A2-COFC qualified (approved by CAA).

• Fully insured – £500,000 professional indemnity.

Working across London and the UK, we undertake safe, detailed, and thorough roof surveys utilising drones operated by qualified and insured pilots. 

Drone surveying a roof with a damaged tile

Rapid Service

We can get to your site quickly with the photos returned on the same day.

Spot Issues

We help to quickly spot issues which cannot be seen from ground level.

Improved Safety

Our drone surveys save inspections using costlier conventional ladder or rope access.

48MP Photos

See every detail you need with high resolution photographs and videos using our DJI drones.

Need to safely and quickly check the condition of a roof? We can help.

Surveying a roof conventionally using ladders or cherry pickers can be costly and a breach of the working at height regulations. The modern method of roof inspection utilise drones, which can provide the data you need from ground level.

THS Concepts works alongside building surveyors to undertake detailed surveys and provide high quality photos, videos, and reports. Our drone operators are certified to Civil Aviation Authority standards and carry the appropriate insurance to put your mind at rest.

With over 1,900 surveying assignments under our belt, including topographical surveys3D scanninglevel surveys and more, you can trust our team to pay attention to every detail of your project.

Drone photo of a roof in Southend-on-Sea
Drone Survey Image

Our Drone Surveys Roof Inspection Process

Quotation / Proposal

On Site Survey

Report / Photos / Video 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 Drone Survey Questions

Yes, our drone operators carry the CAA’s A2CoFC qualification. This allows us to fly our approved drones in built-up areas. We carry public liability insurance of up to £1 million pounds, which can be increased where required. Our number one priority when flying is safety for others around us and ourselves. Prior to each flight, we undertake a detailed assessment of the area and equipment to ensure we are 100% confident in our ability to fly.


  • Missing or damaged flashing
  • Damaged, cracked pots.
  • Blown mortar and brickwork damage.

Roof Tiles

  • Missing and heavily damaged tiles.
  • Build up of vegetation / guano.
  • Mortar damage on ridge tiles.


  • Gutters full of debris (leaves / tiles)
  • Loose or removed wall fixings.
  • Cracked or leaking guttering (where seen)

Parapet Walls

  • Blown plaster.
  • Damaged or missing capping stones.
  • Missing or damaged flashing.


  • Missing or damaged fixings.
  • Loose wiring.
  • Corroded metal work.

Flat Roofs

  • Ponding water
  • Areas of concern.
  • Build up of material (vegetation etc)


We primarily operate our roof surveys using a DJI Mavic Pro 2 (Zoom Version). This drone has an outstanding 12 mega pixel camera and 2x optical zoom which allows us to safely capture all the required details. The drone has advanced sensors and GPS on board which allows it to be safely used in confined areas.

In areas that are very built up we sometimes use our DJI Mavic 3 drone which is a much smaller drone and allows us to fly nearer uninvolved people.

We can generally fly anywhere, but there are a few places that we definitely cannot. We always check with the relevant authorities before we fly. Some areas of London are very tricky to get permission to fly in.

Also, areas around airports, nuclear power stations, prisons, etc have no-fly zones which will require permission to fly into. We aren’t permitted to fly over groups of people.

Our clients receive great service from us, which is reflected in our 5 star reviews on Google and Trustpilot. We ensure you are happy before, during and well after the project has ended.

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.

We undertake 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 as far away as Liberia in West Africa.

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

This obviously depends on the size and the scope of the project. Typically, we will be able to get to your site within 5 days and information is usually issued within 1 day of the final day on site. The photos and videos are returned via a Microsoft OneDrive link which allows you to quickly receive the full resolution files.

Roof Inspection Drone Chimney
Roof Inspection Drone Eaves
Roof Inspection Dormer

Other Services That May Be Useful

Topographical Surveys

We can survey the land around your building, picking up key bits of information such as land heights, tree locations, outbuildings, changes in surface, drainage, and more.

3D Scanning

By default, we utilise 3D scanners on our measured survey projects to produce accurate 3D point cloud files. These are then translated into floor plans, elevations and sections etc.

Utility Scanning

Working alongside our topographical surveys, we undertake underground utility scanning to help work out what is under the ground on your project.

Get a Drone Survey Quote

To get started, please fill out our form below. After we check your project details we’ll send you a fixed price quotation within 24 hours illustrating costs and timelines to get everything returned to you.

Don’t fancy filling out the form? Get in touch via email or telephone:

Call: 020 8935 5160

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Please refer to our terms and conditions here

Edward Sadler - Davis Construction
5 gold stars in a row

“Proactive on site and quick. Customer service is of the highest level as well. Will be using for all future projects.”

Teoman Ayas - MIM Studios
5 gold stars in a row

“Professional and attentive. They produced good quality CAD survey tailored for the specific needs of our project. Their price was reasonable and they delivered it on time.”

Anthony Kyrke-Smith - AKS Architects
5 gold stars in a row

“Very efficient service with quick turnaround. I have used THS-Concepts before and I will again, when I next need a detailed survey.”


Geoff Smith
5 gold stars in a row

“Chris and the guys at THS were absolutely fantastic! They were extremely reasonable cost wise yet provided an outstanding service, despite my complicated situation and numerous changes we had to make.”

Need a Quote For Your Project?