Aerial & 3D Data
Drone Photogrammetry
Aircraft, calibrated imagery and structure-from-motion reconstruction into an accurate 3D model. Fast, safe and high coverage, which is why it is the right first tool on an open site and the wrong one in some specific conditions.
Typical accuracy · Typically ±30mm vertical on a well-flown open site with ground control, degrading over vegetation.
When you need it
- →You need an accurate 3D model of an open site quickly.
- →The area is too large or too uneven to walk in reasonable time.
- →You want a design-grade surface model before groundworks start.
- →Access to the ground is restricted or the ground is unsafe to enter.
What you get
- 3D mesh and surface model in a usable coordinate system
- Georeferenced orthomosaic
- Point cloud for further processing
- Ground control report with residuals
- DEM and contour output where required
How it runs
- 01
Site reconnaissance, permission check and airspace assessment.
- 02
Ground control established and checked where accuracy demands it.
- 03
Flight planned and flown with overlap, then the imagery is processed.
- 04
Model checked against control, then issued with stated accuracy.
- Horizontal control
- ±10mm typical
- Vertical control
- ±8mm typical
- Datum
- OSGB36 · EPSG:27700
- Area covered
- Norfolk base · 6 regions
Questions we get asked
When is photogrammetry the wrong choice?
Under dense vegetation, on vertical or near-vertical surfaces that do not overlap, indoors, and where millimetre accuracy is required. On all of those, laser scanning is the better tool and we will tell you so.
Do you need permission to fly?
Yes. We check the airspace, obtain any required permissions, and confirm landowner permission before every flight. This is part of the job, not an extra.
Often needed alongside
Aerial Mapping & Orthomosaics
Georeferenced, distortion-free imagery from a single flight.
Point Clouds & 3D Models
Deliverables in E57, LAZ, LAS, IFC and XYZ for your software.
LiDAR & 3D Laser Scanning
Millimetre-accurate point clouds that reach beneath vegetation.
Volumetric & Stockpile Surveys
Instant stock tonnage, cut and fill volumes from measured data.
Where we cover
Norfolk based, working nationwide. Site-based surveying, so distance is rarely the constraint.
Available across every region we cover.
Every town, district and borough we cover is listed in full on each region page. See the full service area.
All 18 other services
Start here
Send the address and what it is for.
You will get a straight answer on whether this survey is the right one, and what it should cost. If it is not, we will say so.
info@prospaplans.com · Norfolk, Kent, London, East Anglia and the Midlands