Survey · 01
Topographic Surveys
Feature-coded 2D and 3D topographic surveys from aerial data, tied to OS National Grid and ODN and verified against independent checkpoints.
- Vertical accuracy
- ±20–30 mm
- Ground sample distance
- 1.0–1.5 cm
Survey, mapping & inspection
Drone survey & inspection services, engineered for certainty.
Four survey products and a roof inspection service, one standard: every job is planned, controlled and delivered with the evidence you need to rely on it.
- CAA Operational Authorisation · valid to 28 June 2027
- GVC-qualified remote pilots
- £10m public liability insurance (Coverdrone)
- OSGB36 · ODN · OSTN15 / OSGM15
- Constructionline Gold
- SSIP · Once For All Health & Safety
- Project data processed in the UK
- RAMS & procurement pack on request
Survey · 02
LiDAR Surveys
Classified LiDAR point clouds and bare-earth terrain models for wooded, vegetated and linear sites, captured by drone and checked against ground truth.
- Vertical accuracy
- ±30–50 mm
- Point rate
- Up to 1.2M pts/s
Survey · 03
Photogrammetry & Mapping
Georeferenced orthomosaics, digital surface models and textured 3D models at 1–2 cm resolution, controlled and accuracy-reported.
- Ground sample distance
- 1.0–2.2 cm
- Horizontal accuracy
- ±15–25 mm
Survey · 04
Volumetric & Stockpile Surveys
Stockpile, excavation and void volumes measured by drone, typically within ±1–2%, with tonnages and reconciliation-ready reporting.
- Volume accuracy
- ±1–2%
- Ground sample distance
- 1.5–3 cm
Inspection · 05
Drone Roof Surveys
Bulk roof condition surveys by drone for councils, housing associations and estates, with consistent, prioritised condition data for every building and no scaffolding.
- Scale
- Whole estates
- Access equipment
- None
Compare
Which survey do you need?
A quick guide. If you’re still unsure, describe the decision you need to make and we’ll recommend the right method.
| 01Topographic Surveys | 02LiDAR Surveys | 03Photogrammetry & Mapping | 04Volumetric & Stockpile Surveys | |
|---|---|---|---|---|
| Best for | Design-ready levels & features | Terrain under vegetation, corridors | Current imagery, 3D context | Volumes, cut & fill, stock audits |
| Typical accuracy | ±20–30 mm vertical | ±30–50 mm vertical | ±30–50 mm, mapping grade | ±1–2% of volume |
| Sees through trees | No | Yes — ground returns | No | n/a |
| Key outputs | DWG/DXF, contours, TIN | LAS/LAZ, DTM, contours | GeoTIFF/ECW, OBJ mesh | Volume report, CSV, surfaces |
| Typical turnaround | 5 working days | 5–7 working days | 3–5 working days | 48 hours |
Scope estimator
Get an indicative method in seconds.
0.5 ha · a car park≈ 17 football pitches1,000 ha
Recommended approach
Topographic survey
Photogrammetry controlled to OS grid is the fastest route to survey-grade levels on open ground.
- Time on site
- 0.5 days
- Resolution
- 1.3 cm/px GSD
- Typical accuracy
- ±20–30 mm vertical
- Turnaround
- 5 working days
Indicative only. Your fixed quote confirms method, accuracy and programme.
Get an exact quote
Start a project
Tell us the outcome. We’ll specify the survey.
- 01We aim to reply within one hourA drone surveyor, not a salesperson, reviews your brief and calls if anything needs clarifying.
- 02Fixed quote & method statementScope, accuracy specification, deliverables, programme and RAMS — in writing.
- 03Fly, process, deliverCapture on your programme, then CAD-ready data with a verified accuracy report.