Point Cloud to Floor Plans: UK Guide
Converting point cloud data to 2D floor plans involves five steps: site scanning, data registration, CAD software import, linework creation, and final export. Here is the complete process for UK projects in 2025.
Manual vs AI-Automated Conversion
| Aspect | Manual Method | AI-Automated Method | | --- | --- | --- | | Time per floor | 8–40 hours | 1–3 min processing + 30 min–2 hr cleanup | | Cost per plan | £320–£1,600 | £3–£29 | | Accuracy | Depends on technician | Consistent 2–3cm | | Software needed | AutoCAD or Revit + ReCap (£2,000+/yr) | Web browser only |
The Conversion Process
Step 1: Site Scanning and Data Capture
- Surveyors use 3D laser scanners (FARO, Leica, Trimble) to capture the building
- Multiple scan positions ensure full coverage
- Point cloud accuracy: 5–12mm for survey-grade work
- Day rate for surveyor: ~£1,000/day
Step 2: Data Processing and Registration
- Combine scans into a single 3D model using Autodesk ReCap Pro, FARO Scene, or Leica Cyclone
- Export as RCP/RCS (Autodesk) or E57/LAS formats
- Registration is time-consuming and adds to cost
Step 3: Import into CAD Software
- AutoCAD: Use
POINTCLOUDATTACHcommand - Revit: Insert tab → Point Cloud → select RCP/RCS
- Set up horizontal slice or section plane at floor level (~1.5m high) to show walls, doors, windows
Step 4: Create 2D Linework
Manual tracing:
- Trace walls, doors, windows using polylines
- Use snapping tools for accuracy
- Add door and window openings, room details, dimensions
AI-automated:
- AI detects walls, doors, windows automatically
- Generates clean DXF or IFC geometry in minutes
- Works best with orthogonal (perpendicular) walls
Step 5: Finalise and Export
- Add annotations, room labels, area calculations
- Verify accuracy against point cloud
- Export as DWG, DXF, PDF
UK Standard Deliverables
| Deliverable | Format | Details | | --- | --- | --- | | Registered point cloud | .E57, .RCP/.RCS, .LAS | Millimetre-accurate, ready for CAD or Revit | | 2D floor plans | DWG, DXF, PDF | Orthographic projection, various scales, structural walls, door swings, window heights | | External elevations | DWG, PDF | Front, rear, and side views with architectural features | | Cross sections | DWG, PDF | Floor-to-ceiling heights, stair profiles, roof structure | | Site plans | DWG, PDF | Boundaries, positioning, critical site features | | 3D BIM model | RVT, IFC | Intelligent parametric model (add-on) |
2025 UK Costs
| Method | Cost (ex VAT) | | --- | --- | | Manual CAD drafting per floor | £320–£1,600 per floor plan | | AI-automated (basic) | £3–£29 per floor plan | | Full point cloud to floor plans (small residential) | £800–£2,500 | | Point cloud to CAD service (medium commercial) | £3,000–£10,000 | | AutoCAD or Revit licence | £2,000+/year | | Surveyor day rate (scanning) | ~£1,000/day |
Frequently Asked Questions
Q: Can I convert point cloud to floor plans without AutoCAD?
Yes — AI-powered tools can convert point clouds to floor plans in a web browser without AutoCAD. Costs start from £3–£29 per floor plan.
Q: How accurate are floor plans extracted from point clouds?
Consistent 2–3cm accuracy with AI tools. Manual CAD drafting achieves ±5–12mm depending on technician skill.
Q: How long does the conversion take?
Manual: 8–40 hours per floor. AI-automated: 1–3 minutes processing plus 30 minutes to 2 hours cleanup.
Q: What point cloud formats are accepted?
.E57, .RCP/.RCS, .LAS — compatible with AutoCAD, Revit, and Navisworks.