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What Is LiDAR Scanning? A Plain-English Guide for AEC Teams

What LiDAR scanning is, how point clouds work, the file formats AEC teams need, and when survey-grade accuracy actually matters.

By Tom SparksUpdated May 12, 2026
What Is LiDAR Scanning? A Plain-English Guide for AEC Teams

If you've heard "we'll just scan it" on a project, there's a good chance someone meant LiDAR. Here's what that actually delivers — and what to ask for.

What is LiDAR?

LiDAR (Light Detection and Ranging) measures distance with laser pulses to build a dense, accurate 3D point cloud — a set of millions of 3D coordinates representing every surface in a space. Unlike a photo-based tour, a point cloud is measurable engineering data.

The file formats that matter

For AEC and BIM work, the deliverable format determines whether the data is usable:

  • .e57 — the open standard for point-cloud exchange.
  • .rcp — imports directly into Autodesk Revit and ReCap.
  • .pts — a widely supported plain-text point format.

We export all three from the Matterport Pro3 and the survey-grade Leica BLK360 G2. See our LiDAR scanning and BIM services for the full deliverable list.

When does accuracy matter?

Not every project needs millimeter precision:

  1. Coordination, RFIs, progress capture? The Pro3's ~1% room-scale accuracy is plenty.
  2. Modeling input for Revit? Use survey-grade Leica BLK360 G2 data.
  3. Marketing or training tour? A standard Matterport tour is enough.

The trap is paying for survey-grade accuracy you don't need — or worse, modeling from data that isn't accurate enough. We scope the right tool up front. If you're working a project in the region, our AEC page covers our typical workflow, or reach out to talk specifics.

About the author

Tom Sparks is the founder of Scan Your Space, a Northern California 3D scanning studio, and owner of Sparks Media Group and We Get Around Network. More about Tom Sparks.

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