Services
Aerial Survey & Mapping — orthomosaics, 3D models and as-built records
Aerial photogrammetry produces orthomosaics and 3D models that give design, planning and pre-construction teams up-to-date site information.
Early project stages need accurate as-is information. Aerial photogrammetry records large areas of terrain, buildings and surroundings quickly, producing orthomosaics or 3D models that design teams can measure and plan from.
Where higher positional accuracy is needed, an RTK module and ground control points can be used. Achievable accuracy depends on site conditions and control, and we explain the expected range in our quotation.
Who it is for
- Architects and engineering consultants
- Survey and planning teams
- Contractors (tender and pre-construction surveys)
- Property and facility management
Inspection scope
- Orthomosaics
- 3D models / point clouds
- As-built measurement reference
- Slope and terrain records
- 3D records of building exteriors
Our process
01
Enquiry & drawings
Share the address, building type, storeys and purpose; drawings or past reports help.
02
Site assessment & flight planning
We review surroundings, take-off points and airspace; for advanced operations we apply to the CAD beforehand.
03
Data capture
Visual, telephoto and (if required) thermal imagery along the planned route, with a safety zone in place.
04
Analysis & annotation
Every image is reviewed and suspected defects are tagged by elevation, floor and location.
05
Report delivery & follow-up
We deliver the report and imagery, answer questions and support repair or RI follow-up.
Deliverables
| Deliverable | Content | Type |
|---|---|---|
| Annotated elevations | Suspected defect locations and IDs marked on elevations | Standard |
| Photo index | High-resolution photo for each tagged location | Standard |
| Defect schedule | Type, location, description and suggested follow-up (PDF / Excel) | Standard |
| Thermal comparison | Thermograms alongside visual images with anomaly areas | Optional |
| Orthomosaic / 3D model | Orthomosaic or 3D model of elevations or site | Optional |
| Raw imagery | All original photos and clips (as agreed) | Optional |
Turnaround depends on building size and deliverables selected and is stated in the quotation.
Compliance & safety
- Every flight is planned under the Small Unmanned Aircraft Order (Cap. 448G) and relevant Civil Aviation Department guidance; advanced operations are applied for before flying as required.
- Take-off/landing zones and safety areas are set, with observers and warning measures as the site requires.
- Resident notices are coordinated with property management, stating date, time and purpose.
- Imagery is used for inspection purposes only; identifiable people or door numbers captured by accident are masked before delivery.
FAQ
How accurate is it?
It depends on flight height, RTK and ground control. We recommend an approach for your purpose and state expected accuracy in the quote; we never promise unverified accuracy.
Which 3D formats do you deliver?
Common formats include OBJ, LAS point clouds and GeoTIFF orthomosaics, coordinated with your software.
Can aerial survey replace a land surveyor?
No. Aerial data is for reference and planning; statutory or title surveys must be done by a qualified surveyor.
How long does a large site take?
It depends on area and environment; the quotation lists the expected flight days.
Ready to start your inspection?
Tell us the building address, type and inspection purpose and we will prepare a quotation for your project.