PlanSnapper exists because of a problem that has a surprisingly low-tech workaround that everyone in the industry uses and nobody has fixed.
MLS listings routinely include floor plans. They almost never include measurements. So when you need to know the square footage of a property from a floor plan, the standard approach is: print it out, estimate one wall based on what you know about the building or the lot, and measure every other wall with a physical ruler using that as your scale.
It works. It is also slow, manual, and only as accurate as your initial scale estimate.
PlanSnapper is the same workflow, digitized. Upload any floor plan, click two points on a wall you know the length of, and get every measurement automatically. Square footage, perimeter, individual wall lengths. No printing. No ruler. No guessing.
A browser-based floor plan measurement tool. Computer vision auto-traces the exterior perimeter on clean floor plans. For anything that needs a human touch, you trace it manually. One known dimension calibrates everything else. The output is ANSI Z765-2021 compliant square footage you can use in a report or a deal.
Everything runs in your browser. Floor plans are processed locally using WebAssembly. Nothing is uploaded to a server unless you choose to save a project.
Anyone who has ever needed measurements from a floor plan and did not have them. Appraisers completing reports from MLS floor plans. Agents verifying square footage before a listing goes live. Investors running numbers on a deal before committing. Contractors estimating from aerial photos or blueprints.
Built by Austin, a licensed real estate appraiser in California with 15 years of experience measuring properties. The ruler method is not hypothetical — it is how appraisals actually get done.
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