Point Cloud to Floor Plans in London
Converting a point cloud to 2D floor plans is the standard scan-to-CAD workflow for architects, developers, and engineers who need precise as-built drawings. In London, where Victorian terraces, Edwardian conversions, and complex modern developments frequently have irregular geometry, point cloud-derived floor plans provide the accuracy needed for planning applications, Listed Building Consent, and design coordination.
The Scan-to-CAD Workflow
| Step | Description | | --- | --- | | 1. Site scanning | 3D laser scanner (Leica, FARO, Trimble, RIEGL) captures millions of points per second | | 2. Data registration | Multiple scans aligned and registered using software (Autodesk ReCap, FARO Scene, Leica Cyclone) | | 3. Data cleaning | Remove noise and outliers; refine point cloud for CAD compatibility | | 4. Horizontal section | Cut slice at floor level (approximately 1.5m height) to extract walls, doors, and windows | | 5. Drafting and tracing | CAD technician traces over point cloud in AutoCAD using intelligent snapping tools | | 6. QA and export | Verify accuracy, add layers and annotations, export as DWG and PDF |
Note: Fully automatic floor plan generation does not yet exist. Manual tracing by a skilled CAD technician is still required to produce accurate, layered drawings.
What You Get
| Deliverable | Format | Details | | --- | --- | --- | | 2D floor plans | DWG, PDF | All levels including basements, mezzanines, and lofts | | Elevations | DWG, PDF | Internal and external facades, millimetre-accurate | | Sections and call-outs | DWG, PDF | Floor-to-ceiling heights, structure, and services | | Reflected ceiling plans | DWG, PDF | Beams, joists, and drainage falls | | Window and facade schedules | DWG, PDF | Fenestration and cladding data | | Point cloud files | E57, RCP, RCS | Native scan data for your workflow | | 3D BIM models | RVT, IFC | LOD 100–400 (optional add-on) |
All files use clean, organised layering compatible with AutoCAD, Revit, and ArchiCAD.
Accuracy
| Metric | Tolerance | | --- | --- | | Scanner accuracy | ±2mm (RIEGL, FARO, Trimble X7) | | Point cloud accuracy | ±2–5mm (small projects) to 5–12mm (full footprint) | | CAD drawing accuracy | Typically ±5mm — reflects field conditions and survey methodology |
Scanner accuracy (±2mm) refers to the raw measurement precision. Point cloud accuracy (±2–12mm depending on scale) reflects how well multiple scans register together and the conditions on site. CAD drawings typically deliver ±5mm accuracy, which reflects real-world field conditions.
2025 Costs in London
| Service Type | Price (ex VAT, 2025) | | --- | --- | | Point cloud survey only (small project) | £350–£495 + VAT | | Point cloud survey (standard London project) | £495–£5,000+ | | Scan-to-CAD conversion | £0.80–£2.40 per sq ft | | Scan-to-BIM modelling | £0.15–£0.75+ per sq ft | | Day rate for surveyor | ~£1,000 per day |
Prices vary based on property size, complexity, and required detail level.
Per Drawing Costs
| Drawing Type | Typical Cost | | --- | --- | | Floor plan (single level) | £300–£800 | | Elevation drawings (set) | £400–£1,200 | | Section drawings | £200–£600 | | Full survey (4-bed house) | £1,500–£3,000 |
Point Cloud Formats
| Format | Software Compatibility | | --- | --- | | E57 | Vendor-neutral — universal compatibility | | RCP or RCS | AutoCAD ReCap — native to Revit and AutoCAD | | LAS or LAZ | LiDAR — GIS and drone workflows | | PTS or PTX | Leica Cyclone — survey-specific processing |
When to Commission Point Cloud to Floor Plans
| Project Type | Recommended? | | --- | --- | | Planning application | Yes — accurate floor plans and elevations required | | Listed Building Consent | Yes — non-contact measurement preserves fragile fabric | | BIM workflow | Yes — point cloud provides the foundation for Scan-to-BIM | | Renovation and extension | Yes — as-built dimensions for design | | MEP coordination | Yes — accurate existing layout for clash detection | | Commercial fit-out | Yes — measured floor plans for space planning | | Lease plan or licence to alter | Yes — precise floor areas and dimensions |
CAD Layer Standards
| Layer | Content | | --- | --- | | WALLS | All wall types — structural, partition, internal, external | | DOORS | Door swings, openings, ironmongery symbols | | WINDOWS | Window positions, reveals, cills | | FIXED FURNITURE | Kitchens, bathrooms, built-in storage | | FITTINGS | Sanitaryware, radiators, consumer unit | | LEVELS | Floor levels, ceiling levels, datum | | DIMENSIONS | Recorded and annotated dimensions | | TEXT | Room names, areas, annotations |
Frequently Asked Questions
Q: How long does point cloud to floor plan conversion take?
Site visit: 1–3 hours for standard properties. CAD production: 3–7 working days depending on complexity and deliverables. Large or complex sites may take 2–3 weeks.
Q: What accuracy do I get on floor plans?
Typical CAD accuracy: ±5mm. This reflects real-world field conditions including wall irregularities, settled floors, and historical movement common in London properties.
Q: Can floor plans be used for planning applications?
Yes — point cloud-derived floor plans are suitable for planning applications, Listed Building Consent, Building Regulations, and Party Wall awards. Always confirm requirements with your local planning authority.
Q: Do I need point cloud data or just CAD drawings?
CAD drawings are sufficient for most projects. Point cloud data is useful if your team has in-house CAD capability and wants to create their own drawings, or for complex geometry requiring multiple drafting passes.
Q: What software do I need to open the DWG files?
AutoCAD, AutoCAD LT, Vectorworks, ArchiCAD, or free viewers like Autodesk True View. DWG is the industry standard for 2D CAD drawings.
Q: Can you produce floor plans from existing point cloud data?
Yes — if you have an existing point cloud in E57, RCP, RCS, or other format, we can produce floor plans from that data. Conversion fees apply based on complexity and format.
Q: What about buildings with complex MEP services?
Complex MEP environments (plant rooms, data centres, hospital mechanical floors) require specialist scanning and may take longer to draft. Costs increase accordingly.
Q: Is RGB colour point cloud needed for floor plan production?
No — floor plans are derived from geometry, not colour. Greyscale point cloud is sufficient and more cost-effective. RGB is useful only if needed for client presentations.