Lidar....
Would a investment in a higher quality measuring device make the difference?
Matterport
matterport.com
I would like to see some data on ipads and professional equipment....maybe we need to take it up a notch...
Maybe the GSEs need to require a more stricter requirement?
For strict real estate appraisal standards (like Fannie Mae’s ANSI Z765 guidelines),
dedicated hardware is vastly more accurate than standard consumer smartphone apps. While phone apps are incredibly convenient, they suffer from mathematical drift that can distort your overall Gross Living Area (GLA) square footage calculation
The Core Problem: Why Phone Apps Lose Accuracy
Smartphone LiDAR sensors are designed for short-range Augmented Reality (AR), not long-range land surveying. [
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When you scan a whole house with an iPhone or iPad, the app relies on internal motion sensors to "stitch" the rooms together as you walk. This process introduces
"drift error". A wall that measures perfectly at 10 feet might scale incorrectly on the other side of the house, resulting in global layout errors where walls can deviate by
2 to 4 inches.