The Complete Guide to 3D Scanning for Architects

Why architects need 3D scanning

Gone are the days of tape measures and sketch surveys. LiDAR scanning delivers millimetre-accurate data that transforms how architects approach existing buildings.

What LiDAR scanning delivers

A typical scan-to-BIM workflow produces:

• Point cloud data — The raw 3D dataset (millions of measured points)
• 2D drawings — Plans, sections, elevations extracted from the point cloud
• BIM model — Intelligent Revit model at your required Level of Detail

Understanding Level of Detail (LOD)

LOD defines how much information the model contains:

• LOD 200 — Basic massing and approximate geometry
• LOD 300 — Accurate geometry, suitable for design coordination
• LOD 350 — Detailed elements with connections
• LOD 400 — Fabrication-ready detail

Most architectural projects require LOD 300, balancing accuracy with modelling efficiency.

When to use 3D scanning

Consider scanning for:

• Renovation projects — Accurate existing conditions
• Heritage work — Detailed recording of historic fabric
• Clash detection — Coordinating new services with existing structure
• Asset management — Creating a digital record for ongoing maintenance

Cost vs traditional surveys

While scanning has higher upfront costs, the value comes from:

• Reduced site revisits
• Fewer design errors due to inaccurate surveys
• Ability to extract additional information later
• Permanent digital record

Getting started

When briefing a scanning project, consider:

1. What deliverables do you need? (Point cloud, drawings, BIM)
2. What LOD is appropriate for your project?
3. What areas need capturing?
4. What file formats does your team use?

Get in touch to discuss your project requirements.