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There's a version of "scan to CAD" that actually works, where you walk out of a building with a file your CAD software can open and edit. And there's the version most tools deliver: a PDF floor plan with lines on it that someone still has to redraw from scratch.
If you're running a small architecture or design-build firm, that difference isn't academic. Every hour spent retracing a floor plan is an hour not spent on billable work. This article walks through how the workflow actually functions, including the DXF-vs-DWG detail most write-ups skip, so you can decide whether it's worth adding to how you work.
DXF vs. DWG - What You're Actually Exporting
This trips people up, so let's get it out of the way.
DWG is AutoCAD's native format, what you save, what you send, what lives in the project folder. DXF is the open exchange format Autodesk built specifically so that other software can hand files to AutoCAD cleanly. They're not competing options. DXF is how the file gets in; DWG is what you save it as once it's there.
Import a DXF into AutoCAD, hit Save As, choose DWG. Two clicks, done. No conversion service, no online tool, no workaround. If you're in Revit, the same DXF comes in as a linked underlay or you can push it to native geometry, whichever fits the project.
The reason this matters: a lot of scanning apps export a PDF and call it a CAD file. It isn't. A real CAD file has geometry on named layers, walls, openings, fixtures, labels, that you can select, edit, and build from. A PDF is a flat image. You can look at it, but you can't work in it. If you're not sure which one you're getting, ask before you commit to a tool.
Polycam exports a layered DXF straight from the app. It builds the file on your phone with no cloud processing and no waiting.
The Workflow, From Capture to AutoCAD
Most small firms run some version of this sequence for existing conditions work:
- Go to the site, measure everything with a tape or laser
- Sketch it out, take notes
- Come back to the office and rebuild it in CAD
- Realize something's wrong, go back, or guess
It's slow. And in a two- or three-person shop, the person doing the measuring and the person doing the CAD work are often the same person, which means the whole project stalls while that step gets done.
The phone scan version:
- Walk the space and capture it
- Check dimensions on your phone before you leave
- Export the DXF on-site
- Open in AutoCAD, save as DWG
The rebuild step disappears. You go from being in the building to having an editable floor plan in CAD in roughly the time it used to take just to finish measuring.
The on-site review part is more important than it sounds. Catching a wrong wall thickness or a missed rough opening while you're still standing there takes thirty seconds. Catching it three days later, after you've already drafted around it, means either a return trip or a guess. Neither is great when you're billing by the hour and the client is waiting.
One firm that tracks this closely is JNR Architecture, which completed a full-house scan in one hour with Polycam compared to an estimated 16 hours of manual measurement for the same scope. On a busy week, that's the difference between getting the project started and waiting on field notes.
Polycam's Space Mode handles wall detection, doors, windows, and fixtures automatically as you move through the space. Everything processes on the device, so the file is ready when you are.
What "Usable" Actually Means
Getting a file into AutoCAD isn't the same as getting a file you can work with. The difference is in how it's structured.
A usable CAD file has walls on a wall layer, openings on an openings layer, fixtures separate, labels separate. When that structure is already there when the file arrives, you open it and start working. When it isn't, you spend the first hour of every job sorting out what you're looking at before you can touch it.
Polycam exports with those layers already named and separated. They come through AutoCAD intact, nothing collapses into one layer and nothing needs rebuilding. It's actual geometry you can edit, not a reference image to trace.
Beyond the floor plan, the same scan also generates a 3D model and an AI Spatial Report with square footage, wall surface area, and a fixture count, all of which export directly to Excel or Procore. One site visit covers the CAD file, the documentation, and the client deliverable.
Where It Works and Where It Doesn't
Polycam replaces the redraw step by giving you a 3D spatial reference and a 2D floor plan straight from the scan, so you're opening geometry in AutoCAD instead of rebuilding it from handwritten notes. It doesn't replace your CAD work, your design judgment, or your drawings. You still produce the drawings. The scan just means you're not also manually measuring and rebuilding geometry before you can start.
It's a good fit for renovation scoping, existing conditions sets, permit close-out, bid packages for subs, and any project where you need to document what's already built. If your firm regularly takes on that kind of work, it fits naturally.
It's not the right tool for legal surveys, work requiring a licensed surveyor's stamp, or jurisdictions with strict survey tolerances. Those have regulatory requirements that go beyond what a phone scan is designed for.
Polycam's Business plan is what unlocks the DXF export, along with AI Spatial Reports, team sharing for remote review, and client-facing shareable links, which are useful if you're collaborating with someone not in your office.
Worth Testing on One Real Job
Polycam has a 7-day free Business trial at poly.cam/pricing. The fastest way to know if it works for you is to use it on something real. Scan one room, export the DXF, open it in AutoCAD, save it as a DWG, and see if that file is something you'd actually work from.
That's probably 30 minutes. No equipment to rent, nothing to certify on, no obligation past the trial. If the output works for your projects, you'll know within the first scan.