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AI floor plan scanner

Scan a floor plan into something you can actually edit

Draftie reads a drawing the way a draftsperson does (walls, openings, room labels, scale) and hands back editable geometry. Not a redrawn image. Walls you can drag, with the millimetres updating as you do.

Free while in beta · no card · needs a laptop or desktop

How it works

Step 01

Upload what you have

A photo of a hand sketch, a scan of an old plan, a PDF from your builder or council. JPG, PNG or PDF, single or multi-page.

Step 02

Confirm the scale

Draftie proposes a scale from what it read on the drawing. If there is no scale bar, type any length you know (a door width, a room dimension) and everything else follows from it.

Step 03

Review and edit

Every wall, door, window and room label comes up for review before it becomes your plan. Accept what is right, fix what is not, then start moving walls.

What the AI is actually doing

Three models, each doing one job, because one model asked to do all three does all three vaguely.

A segmentation model separates wall from room interior across the whole image. A detection model finds doors and windows as objects and works out which wall each one sits in. And a vision-language model reads the text on the drawing (“BED 1”, “3600”, “WIR”) so rooms come back named and dimensions come back as numbers rather than as ink.

The output of all three is then reconciled against geometry that has to close: walls must meet, rooms must be enclosed, and an opening has to belong to a wall. That reconciliation is the part most tools skip, and it is why you get a plan you can edit rather than a set of confident guesses that fall apart the first time you drag something.

It is worth being clear about what that means for accuracy. The models propose; the geometry engine decides what is consistent; and you approve. Nothing is applied to your plan silently, because a scanner that is right 90% of the time and tells you nothing is more expensive than one that is right 80% of the time and shows you its working.

What to expect from each kind of input

Quality is decided almost entirely by what you feed it, and the ranking is not a surprise. A vector PDF contains real line geometry at real coordinates, so precision is preserved rather than inferred. A photograph contains pixels, so precision is inferred from them, and there is a floor below which the information simply is not there.

Input quality and what it means for the result
InputTypical outcomeWhat to watch
Vector PDF from CADNear-exact walls and openingsNothing much: this is the best case
Scanned PDF, 300dpiVery good; occasional merged wallCheck thin internal walls
Scanned PDF, 150–200dpiUsable; expect some correctionsWall thicknesses become approximate
Phone photo, plan filling frameGood structure, scale needs settingShoot square-on if you can
Phone photo, plan small in frameUnreliableRe-shoot closer: this is the common failure
Hand sketchCorrect rooms, proportions need fixingWrite in one known dimension

Why editable geometry matters more than it sounds

Most tools that advertise AI floor plans return an image. It looks like a plan, and that is the end of what it can do, you cannot move a wall, you cannot check a dimension, and you cannot hand it to anyone who needs to build from it.

Draftie returns the model underneath the drawing: walls with thicknesses, openings with sills and heights, rooms with types and areas. Drag a wall and the adjoining rooms re-shape while it is still moving, and the millimetres change as you go. Snapping holds to wall faces and centrelines, so a wall you meant to align actually aligns rather than sitting 3mm off.

Because it is real geometry, it exports as a real file. A DXF opens in CAD with millimetre coordinates. A 1:100 PDF prints at true scale, which means a 90mm wall measures 0.9mm on the sheet, the thing that makes a drawing measurable rather than merely printable.

Calibration, and why one measurement is enough

A drawing carries its scale in one of three ways: a printed ratio, a scale bar, or dimension strings along the walls. Draftie looks for all three, and when it finds one it proposes a scale for you to confirm.

When there is none (which is every hand sketch and a lot of brochure plans) you supply one length instead. Any length you actually know: an 820mm door leaf, a 3,600mm bedroom, the overall frontage. Everything else in the drawing is then a ratio away from it.

One practical tip that materially changes the result: calibrate against the longest dimension you know, not the shortest. Measurement error scales with the reference, so a 300mm error on a 12m frontage is a 2.5% error across the plan, while the same 300mm error on an 820mm door is 37%. If you know the frontage, use the frontage.

You can also re-calibrate at any point afterwards by measuring something else you know. Nothing about the first scale is locked in.

How it compares

The honest version, including where other tools are the better answer.

Draftie against the nearest alternatives, for scanning an existing plan
DraftieImage-based AI toolsPlatform trace tools
What you get backEditable walls and openingsA picture of a planA background to trace by hand
DimensionsReal millimetres, to 1mmNone, or approximateWhatever you draw
Room names read from drawingYesSometimesNo
Manual redrawing neededNoN/A: cannot editYes, the whole plan
CAD exportDXF, millimetre coordinatesNoVaries; often paid tier
3D and photorealistic rendersNoOften yesOften yes
Works on a phoneNoUsually yesSometimes

Who this is for

Renovators

You have a plan of the house as it is and you want to try moving a wall. This gets you the existing house as geometry in a couple of minutes, so you spend your time on the change rather than on redrawing what is already there.

Draftspeople and building designers

Client intake. Somebody arrives with a PDF and an idea; you get the DXF instead of spending the first billable hour retracing their existing floor plan.

Real estate professionals

An old listing plan that needs redrawing, or a scanned plan that needs to become a clean one. Read it in, tidy it, export a PNG or a true-scale PDF.

What it handles, and what it doesn’t

Handles

  • Hand sketches on graph paper, plain paper or a napkin
  • Phone photos of printed plans, including at an angle
  • Scanned or vector PDFs, single or multi-page
  • Real estate brochure plans and old council drawings
  • Plans in millimetres, metres or feet and inches
  • Drawings with no scale bar: calibrate from any known length
  • Room names and dimension strings printed on the drawing

Doesn’t

  • Structural or engineering detail, it reads architecture, not framing
  • Furniture and fixtures in a photo (you place those afterwards)
  • Site plans, elevations and sections: floor plans only
  • Very low-resolution images: below about 1000px wide, walls blur together
  • Two storeys in one image: scan each floor separately
  • Guaranteed accuracy: everything is reviewed by you before it lands
  • Construction documentation: Draftie produces concept plans

Questions

How accurate is the scan?

Accurate enough to be worth correcting rather than redrawing, which is the honest bar. A clean vector PDF comes back close to exact. A photo of a hand sketch comes back as a good structural guess with the odd wall in the wrong place. That is why nothing is applied silently, every wall, opening and label is presented for review first, so a mistake costs you a click rather than a plan.

What if my drawing has no scale on it?

Type in any length you know. A standard 820mm door, the width of a bedroom, the overall frontage, one real measurement calibrates the whole drawing. Use the longest dimension you are sure of, because error scales with the reference you pick.

Can I edit the plan after it is scanned?

That is the entire point. You get walls you can drag with live millimetre dimensions, doors and windows you can move and resize, rooms you can re-type, and snapping that holds. It is a floor plan editor that happens to start from your drawing.

What file formats can I upload?

JPG, PNG and PDF. PDFs can be vector or scanned, and single or multi-page, you choose which page to work from. If you have a choice, a vector PDF gives the best result by a clear margin.

What can I export?

A 1:100 PDF on A3 with a flooring schedule, a DXF for CAD software with millimetre coordinates on five named layers, and PNG or SVG for everything else. Exports are at true scale, so a measured drawing measures correctly.

Does it read room names, or do I have to type them?

It reads them. A vision-language model handles the text on the drawing, so “BED 2” comes back as a bedroom and “WIR” as a walk-in robe. You can re-type any room it gets wrong, and unlabelled rooms come back as untyped spaces for you to name.

Do I need a desktop?

Yes. The editor needs a screen at least 900px wide and a mouse: drawing walls to the millimetre is not something a phone screen does well, and we would rather say so than let you find out. Your account and plans wait for you on a laptop.

What happens to my drawing, is it private?

Plans save to your own account. Crops of the drawing are sent to AI providers we contract with in order to read the labels, and the privacy policy sets out exactly what goes where. Nothing is published or shared by default.

Is it free?

Free while Draftie is in beta, with no card required and no export limits. Plans save to your account automatically.

Start with the drawing you already have

Most people begin with a photo of something on the fridge. Two minutes later it is a plan they can edit.

Upload a plan, free

Draftie produces concept plans, not construction documents, and its plan checks are advisory rather than a compliance certificate. Product specifications change, confirm current details with the manufacturer before relying on them.