Foulness Island, Essex
Foulness Island drainage scheme
Hydrographic surveys, Topographical surveys, Drone surveys
Drone surveys, aerial LiDAR and roof inspections
Aerial data captured safely from the ground. Our CAA-qualified pilots fly survey drones for point clouds, mapping and roof inspections, with no scaffolding, ladders or cherry pickers.
- CAA A2 CofC qualified pilots
- Roof photos and video within 2 days
- Combined with ground surveys when needed
TSA member
Full member of The Survey Association, the UK trade body for survey companies.
Quotes in 24 hours
Fixed price, confirmed timescales, no surprises on the invoice.
Since 2013
Over 2,000 surveys, from home extensions to nuclear power stations.
Fully insured
£1m professional indemnity and £5m public liability cover.
What a drone survey is for
Drones reach the parts of a site or building that are slow, expensive or unsafe to reach any other way. We use them in two ways: to capture survey data for design, and to inspect roofs and high-level structures without anyone working at height.
Aerial survey data
Drone photogrammetry and LiDAR produce coloured point clouds and orthophotos of sites, roofs and upper elevations. We combine them with ground-based topographical surveys and 3D laser scans so the whole site sits in one coordinated dataset.
Roof inspections
Inspecting a roof with ladders or a cherry picker costs time and money and brings working at height risk. A drone inspection captures detailed photographs and video from the ground, usually in a single visit. We work alongside building surveyors and property managers, and can supply a condition report with the media.
Safety first
Every flight starts with an assessment of the area and the equipment. Our pilots fly within CAA rules, check permissions where they are needed, and will not fly if it is not safe to do so.
Types of drone surveys
Drone LiDAR surveys
Aerial LiDAR or photogrammetry, captured by drone and tied to the OS grid. Ideal for large sites, roofs and upper elevations that are slow or unsafe to survey from the ground.
Roof inspections
Roofs, chimneys, gutters and flashings photographed and filmed by drone from the ground, with no scaffolding, ladders or cherry pickers. Photos and video usually within two days of the flight.
How it works
Quote and flight check
We quote within one working day, check whether the location can be flown, and give you a fixed price and our earliest date.
Flight
Our pilot assesses the area and equipment before every flight, then captures the agreed imagery or survey data.
Delivery
Roof photos and video usually arrive within 2 days of the flight. Survey data is processed and delivered with your drawings.
Who we work with
Building surveyors and property managers
Roof condition information without scaffold or access costs.
Architects and engineers
Roofs and upper elevations captured where ground surveys cannot see.
Developers and contractors
Aerial data for site planning, progress records and larger sites.
Recent projects
See all projectsWhat clients say
Read our reviews on Google★★★★★
We have used THS Concepts for multiple surveys from topographic to drone photogrametry, they are professional and prompt and deliver exactly what is requested. Highly recommended.
★★★★★
I contacted Tom to carry out a Topographic survey, and cannot recommend them enough. Nothing was to much, and I was kept up to date with everything as it happened! Great company to deal with and reasonably priced.
★★★★★
Superb service, quick turnaround and extremely helpful! I wouldn't hesitate to use THS Concepts again if I need to in the future!
Drone surveys: common questions
Are your pilots qualified and insured?
Yes. Our pilots hold the CAA A2 Certificate of Competency, which allows us to fly approved drones in built-up areas. We carry £5 million public liability and £1 million professional indemnity insurance, and assess every site and flight before take-off.
What do roof inspections usually find?
Damaged or missing flashing, tiles, ridge mortar and capping stones, blocked or cracked gutters, loose fixings, vegetation build-up and brickwork damage.
Is there anywhere you cannot fly?
Some areas need permission first, including parts of central London and the areas around airports, prisons and nuclear sites. We never fly over groups of people, and we check with the relevant authorities before every flight.
How quickly will I get the photos and video?
We can usually be on site within 5 days, and media is normally issued within a day or two of the flight.
Related services
- Topographical surveys
Site levels, features and boundaries for planning and design.
- 3D laser scanning
Point clouds and BIM models of buildings, plant and structures.
- Building height surveys
Height and storey measurement for the Building Safety Act.
Tell us about your site
Send a location, a rough brief and your deadline. We reply with a fixed quote within 24 hours.