Point Cloud Survey for Architects: What You Need
Point cloud surveys give architects millimetre-accurate as-built data on existing buildings — enabling precise design, clash detection, and BIM integration for refurbishment, retrofit, and heritage projects.
What Architects Need from Point Cloud Surveys
| Need | Why It Matters | | --- | --- | | Millimetre accuracy (±3–5mm) | Exact representation of walls, floors, ceilings, windows, doors, structural elements | | Complete 3D data | Billions of points capturing spaces beyond specification — saving time on later measurements | | Colourised point clouds | Integrated digital camera adds visual context (adds ~40% cost but improves visualisation) | | Georeferenced data | Aligned to OSGB36 or project coordinate system for integration with other project data | | Access to obscured areas | Captures concealed structural elements, MEP services, and façade details |
Key Deliverables for Architects
| Deliverable | Format | Use | | --- | --- | --- | | Registered point cloud | .E57, .RCP/.RCS, .LAS | Raw data for reference in Revit, AutoCAD, Navisworks | | 2D CAD drawings | .DWG | Floor plans, sections, elevations extracted from scan | | Revit BIM model | .RVT | Intelligent 3D model with Revit families, structured by discipline | | IFC model | .IFC | Open BIM format for Solibri, Trimble Connect, BIM Collab | | Deviation reports | PDF or visual overlay | Model-to-cloud alignment with colour-coded tolerance bands | | Leica TruView | Web-based | Collaboration tool for navigating point cloud data |
BIM Integration and LOD
Point clouds are the preferred starting format for scan-to-BIM workflows. LOD determines how much of the point cloud is modelled into intelligent BIM geometry:
| LOD | Best For | Accuracy | Typical Architect Use | | --- | --- | --- | --- | | LOD 100 | Concept design, feasibility | Low | Early planning, space allocation | | LOD 200 | General layout, coordination | Medium | Initial coordination, cost planning | | LOD 300 | Detailed design, tender drawings | High (±5–15mm) | Most common — design development, clash detection | | LOD 400 | Fabrication, manufacturing | Very high | Specialist contractor coordination | | LOD 500 | As-built, facilities management | As-built | FM and asset management |
Most UK architectural projects require LOD 300 for detailed design and coordination. Upgrading LOD later is possible without rescanning since the point cloud is retained.
2025 UK Costs
| Project Type | Cost (ex VAT) | | --- | --- | | Small residential | £800–£2,500 | | Medium commercial | £3,000–£10,000 | | Large or complex | £10,000–£50,000+ | | Colourised point cloud | +40% on base price | | BIM modelling add-on | £7–£15/m² depending on LOD |
Frequently Asked Questions
Q: What accuracy does a point cloud survey achieve?
±3–5mm for terrestrial laser scanning. Accuracy sufficient for LOD 300 BIM models and design coordination.
Q: Can I import point cloud data directly into Revit?
Yes — using the Point Cloud API, CloudWorx plugin, or Recap. Confirm format (.E57, .RCP, .RCS) with your surveyor before commissioning.
Q: What LOD do I need for planning applications?
LOD 300 is sufficient for most planning applications. Higher LOD (350–400) is needed for heritage and MEP-heavy coordination.
Q: Should I request colourised point clouds?
Yes — if visual context matters for your project. Add ~40% to cost but significantly improves visualisation and client communication.