iPhone LiDAR for Home Inspectors: What It's Good For

The LiDAR scanner on iPhone Pro models is a working inspection tool, not a gimmick. It scans a room in seconds, produces floor plans and 3D models, measures with a tap, and lets you anchor findings to an exact spot in the house. Here's what it's genuinely good for on the job, and where it stops.

What LiDAR is

LiDAR stands for Light Detection and Ranging. The sensor fires pulses of light at the surfaces around you and times how long each pulse takes to bounce back. From those timings the phone builds a depth map, and from the depth map, a 3D model of the room: walls, floors, ceilings, openings. It happens in real time as you sweep the phone around the space.

Which devices have it

LiDAR ships on the Pro line: any iPhone 12 Pro or newer, including every Pro and Pro Max model since, plus iPad Pro. The sensor is the small dark circle in the rear camera cluster. If you're running a non-Pro iPhone you can still do photo, voice, and checklist capture in most inspection apps, you just won't get room scans.

What it does on an inspection

• Room scans in seconds. Walk the room, sweep the phone, done. Dimensions and layout captured without a tape measure or a sketch pad.
• Floor plans and 3D models. The scan data generates a floor plan and a model you can rotate. Useful for the report and for any client question about layout.
• Tap-to-measure. Need the width of a stair opening or the length of a wall crack? Tap two points on the scan.
• Findings anchored in place. The big one for report quality. Instead of "crack, north basement wall" as prose, the finding is a pin at the actual spot in the 3D scan. InspectAI anchors findings to LiDAR room scans and pins spatial notes to photos and scans, so the client sees exactly where each issue lives. It also means your own photos never need re-sorting, as covered in stop sorting inspection photos.

What it doesn't do

• It only sees geometry. LiDAR maps surfaces. It doesn't detect moisture, heat, gas, or wiring problems, and it can't see inside a wall. Your moisture meter, thermal camera, and testers keep their jobs.
• It doesn't replace photos. Photos carry the visual evidence: texture, staining, corrosion, the actual condition. LiDAR supplies the where, photos supply the what. You need both.
• It's not a structural survey. Scan accuracy is good for room-scale geometry and location, not for engineering-grade tolerance work.

Scan and photo together

The combination is what clients respond to. The 3D model gives them the room, the pin gives them the spot, and the photo gives them the defect itself. A buyer reading "window seal failure, southwest bedroom" has to imagine it. A buyer looking at a pin on the model of that bedroom, next to a close-up photo, understands it in one glance. The buyer-facing side of this is covered in LiDAR and 3D scanning in home inspections.

Getting started

If you already carry an iPhone Pro, the hardware cost of trying this is zero. The change is workflow: scan each room as you enter, capture findings against the scan as you go. Most inspectors find the scanning adds seconds per room and removes the location bookkeeping from the entire rest of the job.

FAQ

Does LiDAR replace my camera?

No. LiDAR captures geometry and location. The camera captures the visual condition of the defect. Reports need both, and the useful trick is linking them, each photo pinned to its spot in the scan.

Do I need a special app?

Yes. The sensor needs software that turns its data into scans, floor plans, and measurements. InspectAI's iPhone app uses LiDAR for room scans and for anchoring findings in place.

Can LiDAR see through walls?

No. It measures visible surfaces only. Anything concealed still requires your normal tools and judgment, and the usual "not visible or accessible" limitations in your report.