01/06/2026
The survey method you pick determines whether your Scan-to-BIM deliverable is usable.
Most project owners let the surveyor choose. That's a mistake โ because the method shapes your budget, timeline, and whether the processing team can actually model from the data.
๐๐ถ๐๐๐ฅ โ the professional standard for interiors:
- 2-6mm accuracy at typical scanning distances
- Captures white walls, polished floors, glass with the same precision as textured brick
- Output: LAS, LAZ, E57, RCP โ direct input for Scan-to-CAD/BIM
- Standard for renovation, permit, and coordination projects
๐ฃ๐ต๐ผ๐๐ผ๐ด๐ฟ๐ฎ๐บ๐บ๐ฒ๐๐ฟ๐ โ right tool, wrong job for interiors:- Relies on surface texture to match points across images
- Smooth surfaces (painted walls, glass, polished floors) produce holes, noise, geometric drift
- 1-3mm accuracy is possible โ but only in ideal conditions with high overlap and good GCPs
- Cheaper upfront, often more expensive after processing remediation
๐ช๐ต๐ฒ๐ป ๐ฝ๐ต๐ผ๐๐ผ๐ด๐ฟ๐ฎ๐บ๐บ๐ฒ๐๐ฟ๐ ๐๐ถ๐ป๐: textured heritage facades, archaeological sites, exterior elevations where 10-20mm tolerance is acceptable, surfaces a drone can reach that ground-based LiDAR cannot.
๐ง๐ต๐ฒ ๐ฏ๐ฟ๐ถ๐ฒ๐ณ๐ถ๐ป๐ด ๐ณ๐ผ๐ฟ ๐๐ผ๐๐ฟ ๐๐๐ฟ๐๐ฒ๐๐ผ๐ฟ: Define the end deliverable first. If you need DWG floor plans, sections, and elevations โ or an IFC at LOD 200 โ specify LiDAR in LAS/LAZ/E57 with verified registration accuracy. If the surveyor proposes photogrammetry for interior work, ask: has the output been tested against a control check? What is the reported accuracy?
Full breakdown with cost considerations, speed on site, and when each method is the right call:
https://www.enginyring.com/en/blog/photogrammetry-vs-lidar-which-survey-method-is-right-for-your-project
