What is 3D laser scanning?
3D laser scanning (also called terrestrial laser scanning or LiDAR scanning) captures a building or site as a high-density point cloud — millions of XYZ measurement points covering every visible surface. The point cloud is a permanent, verifiable record of the building as it existed at the time of the survey, and can be used to extract 2D drawings, build a Revit BIM model, or feed straight into a contractor's design model.
A 3D laser scan typically uses a FARO Focus or Leica RTC360 / BLK2GO terrestrial scanner, mounted on a tripod and positioned at 3–10 locations throughout the building. Each scan position captures millions of points with ±2–6 mm accuracy, and the scans are then registered together into a single unified point cloud.
2026 cost bands
A 2026 3D laser scanning project in the UK typically lands in the following bands (ex VAT):
| Project | Typical 2026 cost | Notes |
|---|---|---|
| Small commercial unit (~200 m² floor area) | £1,500–£3,000 | Scan + 2D extraction |
| Medium commercial building (~500 m²) | £3,000–£5,000 | Scan + 2D extraction |
| Large commercial building (~1,000 m²) | £5,000–£10,000 | Scan + 2D + 3D model |
| Heritage building (church, listed ~500 m²) | £5,000–£8,000 | 15–30% heritage uplift |
| Industrial site (warehouse, plant) | £3,000–£8,000 | Per-day rate plus processing |
| Point cloud + Revit BIM (LOD 300) | £7–£10/m² | Model + scan |
| Point cloud + Revit BIM (LOD 350) | £10–£15/m² | Construction-grade BIM |
The London premium is roughly 20–30% above the national average, in line with other surveying services.
What's included in a 3D laser scanning project
A standard 2026 3D laser scanning project includes:
- Site setup and scan registration — 3–10 scan positions depending on building complexity.
- Point cloud delivery in E57, LAS, or PTS format, with the registered dataset as a single unified file.
- 2D extraction (optional) — floor plans, elevations, and sections extracted from the point cloud as DWG + PDF.
- Revit BIM model (optional) — a 3D model built from the point cloud at LOD 200, 300, or 350.
- Cross-sections and profiles at any position in the model.
- Virtual tour (optional) — a navigable 3D view of the point cloud.
The point cloud is the most valuable deliverable. Unlike a 2D drawing, which is a static representation, the point cloud is a comprehensive dataset that can be re-processed indefinitely. If the building needs to be surveyed again in the future, the original point cloud can be re-used for a fraction of the cost of a new survey.
When to use 3D laser scanning
3D laser scanning is the right answer when:
- The building has complex geometry (curved walls, detailed ornamentation, irregular roof structures).
- The architect needs a BIM model for design coordination, FM, or asset management.
- The project is a heritage or listed building that needs a permanent digital record.
- The data will be reused by multiple stakeholders (architect, structural engineer, M&E, contractor, FM team).
- The site is large or has a complex layout (industrial plant, multi-storey commercial, infrastructure).
- The client wants a verifiable record of the building at the time of survey (insurance, due diligence, dispute resolution).
For a typical 3-bed semi with a straightforward extension, a 2D measured building survey is sufficient and cheaper. The 3D scan is the right answer when the value of the data exceeds the cost premium.
Accuracy and standards
A 2026 RICS-aligned 3D laser scanning project is typically specified to an accuracy of ±2–6 mm at typical scan ranges (10–30 m), with tighter accuracies available at shorter ranges or with specialist survey-grade scanners. The point cloud is registered to OS grid and datum where required, and the deliverable conforms to the RICS Measured Surveys of Land, Buildings and Utilities, 3rd edition standard.
For heritage projects, the Historic England Metric Survey Specifications (formerly English Heritage) set the accuracy band for grade I and grade II listed buildings, typically ±2 mm at short range.
Turnaround time
A 2026 3D laser scanning project typically delivers in 5–10 working days for a small to medium project, with a larger commercial or heritage project taking 2–4 weeks. Express turnaround (3–5 working days) is available at a 25–50% premium.
How to commission a 3D laser scanning project
- Send the address and a brief. Outline the project (renovation, heritage record, BIM model, FM), the building size in m², the deliverable requirement (point cloud only, point cloud + 2D, point cloud + Revit), and the desired accuracy band.
- Receive a fixed-fee quote based on the project scope. Most 2026 quotes are returned within 24 hours.
- Site visit. 1–3 days on site depending on the building complexity.
- Point cloud registration and processing. 1–3 working days in the office.
- 2D extraction and BIM modelling. 3–10 working days depending on the deliverable scope.
- Issue deliverables. Point cloud (E57/LAS/PTS) + 2D drawings (DWG/PDF) + Revit BIM (RVT/IFC) if specified.
A 3D laser scan is the right starting point for any project that needs a permanent, verifiable record of a building — or for any project where the design team is working in BIM. The cost premium over a 2D survey is dwarfed by the value of having a permanent digital record.
Frequently asked questions
Is 3D laser scanning the same as photogrammetry? No. 3D laser scanning uses a terrestrial scanner (FARO or Leica) that emits a laser beam and measures the time-of-flight to calculate distance, producing a high-density point cloud. Photogrammetry uses overlapping photos and software (Pix4D, Metashape) to reconstruct a 3D model from 2D images. 3D scanning is more accurate (±2–6 mm at typical ranges) but more expensive; photogrammetry is faster and cheaper for large open sites but less accurate.
Do I need a 3D scan if I only need floor plans? No. For a typical 3-bed semi with a straightforward extension or loft, a 2D measured building survey is sufficient and cheaper. A 3D scan is the right answer when the building has complex geometry, when the architect needs a BIM model, when the project is a heritage or listed building, or when the data will be reused by multiple stakeholders.
How much does a 3D laser scan add to a 2D measured survey? A 3D laser scan typically costs 30–50% more than the equivalent 2D survey. For a 3-bed semi, a 2D survey might be £900 and a 3D scan £1,200–£1,400. For a large commercial or heritage project, the 3D scan is usually the only option because the 2D survey would be unworkable.
What is the difference between FARO and Leica scanners? FARO and Leica are the two leading scanner brands in 2026. FARO Focus scanners are the workhorse for most 3D scanning projects — fast, accurate, and well-supported. Leica RTC360 and BLK2GO scanners are the premium option, with higher accuracy, faster scan times, and HDR imaging built in. Most 2026 projects use a FARO or Leica scanner, with the choice driven by the project spec and the firm's existing kit.
What file formats do you deliver? The standard 2026 deliverables are E57 (the open point cloud format), LAS (a lidar-specific point cloud format), and a Revit BIM model (RVT) at the requested LOD band. PDF reports and 2D CAD extraction (DWG) are also available.