sizeless
Turn a 10-minute phone video of an open trench into engineering-grade documentation
launched 22h ago · by Julius & Cornelius & Roger
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sizeless launched on 10 September 2026 on Y Combinator, in the week of 7 September 2026. Every swipe on the card above counts.
Real Estate and ConstructionComputer VisionReal EstateConstructionArtificial Intelligence🃏 Real Estate and Construction deck →
What they say it does
Hey everyone 👋 We're Julius, Cornelius and Roger — the founders of sizeless. TL;DR sizeless turns a smartphone video of an open trench into the documentation utilities and contractors are legally required to produce: a 3D model, CAD/BIM plans, and the quantities they bill from. Today that takes months and a surveyor. We do it in hours, from a video the crew films themselves. Problem ❌ Everything under a street — gas, water, power, heat, fiber — must be documented when it is built or repaired. That documentation is still done by hand: schedule a surveyor, drive out, measure with a tape or a GPS rover, write it on paper, go back to the office and draw it. Then the next contractor does the same thing again, for their own pipe, in the same trench. Our average customer waits 6 months for documentation and spends around $4M a year per German city on it. And once the trench is backfilled, nobody can check whether the numbers were right. One person's reading, one moment, unrepeatable. That is
