How to Turn a Photo, PDF, or Sketch Into a Floor Plan
Most people already have a floor plan of their home somewhere — in a listing PDF, a photo of a lettings brochure, or a biro sketch on the back of an envelope. What they don't have is a plan they can edit, measure, view in 3D, or hand to a contractor. Floor Plan Studio exists to bridge that gap: you give it the plan you already have, in whatever state it's in, and it gives you back a structured 2D or 3D plan.
Why redrawing a plan by hand is the wrong place to start
Drawing a floor plan from scratch in CAD software means learning the software before you learn anything about your own home, and typing in wall lengths you probably haven't measured yet. Starting from a document you already have skips that: Floor Plan Studio reads the walls, rooms, doors, and windows out of your photo, PDF, or sketch and builds them as real objects you can move, relabel, and export, so the first thing you do is correct a draft rather than face an empty canvas.
Step-by-Step: How to Turn a Photo, PDF, or Sketch Into a Floor Plan
- Pick your starting point. Open Floor Plan Studio in Interior Design AI and choose your source: a photo of a printed or drawn plan, a PDF from a listing or architect, or a hand-drawn sketch. A LiDAR scan is the fourth option if you have no plan at all.
- Get the source as flat and readable as possible. If you are photographing a paper plan, lay it flat, light it evenly, and shoot straight down so the walls stay square. For a PDF, use the original file rather than a screenshot of it.
- Let the app build the plan. The app detects walls, rooms, and openings and assembles them into a structured 2D plan — not a picture of a plan, but rooms and walls it can measure and export.
- Check it against the real space. Walk the rooms and compare. Fix room names, correct anything the source drew ambiguously, and confirm at least a couple of dimensions with a tape measure before you rely on them.
- Switch to 3D, then export. View the plan in 3D to sanity-check room proportions and door positions, then export it as PDF, DWG, DXF, IFC/BIM, or USDZ depending on who you're sending it to.
Which source gives the best plan
The four inputs are not equivalent, and picking the right one saves a lot of correcting afterwards. A vector PDF from an architect or a letting agent is the strongest starting point, because the walls in it are already lines with known lengths. A photo of a printed plan comes next, provided you shoot it flat and square. A hand-drawn sketch works, but the app has to infer scale, so write at least one real dimension on it. A LiDAR scan is the one to use when you have no drawing at all, because it measures the space directly.
Whichever you use, the output is a draft. The app is reading a document, and documents are ambiguous: a thick line might be a wall or a shaded feature, a gap might be a doorway or a drafting error. Expect to fix a few things.
- Vector PDF from an architect or listing: best accuracy, least correcting.
- Photo of a printed plan: good, if shot flat, square, and evenly lit.
- Hand-drawn sketch: workable — keep lines straight and write a dimension on it.
- LiDAR scan: use when no drawing exists; measures the space directly.
What the converted plan won't tell you
A structured plan is a big step up from an image, but it is still a drawing of what your source said, not a survey of your building. It doesn't know which walls are load-bearing, where the joists run, or where pipes and cables sit inside them — so it cannot tell you whether a wall can come down or a doorway can move. It doesn't carry ceiling heights unless they were in the source, and it doesn't know about building regulations, permits, or fire escape requirements.
None of that stops the plan being useful. It just means the plan is the thing you take to a professional, not the thing that replaces one. Before any work is priced or started, have a builder, architect, or structural engineer check it on site.
Try It on Your Own Space
Interior Design AI: Floor Plan is free to download on the App Store. Redesign your first room in under a minute.
⬇ Download Interior AIFrequently Asked Questions
Can I turn a hand-drawn sketch into a real floor plan?
Yes. A hand-drawn sketch is one of the four supported inputs, alongside a photo, a PDF, and a LiDAR scan. Draw walls as straight lines, leave gaps for doorways, and write a dimension or two on the sketch — the app uses those to set the scale it builds the plan at.
Do I need to know the room dimensions before I start?
No, but the plan is only as accurate as what you give it. A sketch or photo with no dimensions on it produces correct room shapes and relationships at an estimated scale. If you need measurements you can build from, either write real dimensions on the source or scan the space with LiDAR instead.
What is the difference between this and just having a PDF plan?
A PDF plan is an image. The output of Floor Plan Studio is a structured plan: rooms, walls, and openings the app understands as objects, which is why it can show them in 3D, produce a room schedule, calculate areas, and export to CAD and BIM formats.
Will the plan be accurate enough for a builder?
Treat it as a working draft, not a survey. It is accurate enough to plan a layout, agree on a direction, and give a contractor something concrete to quote against. Have measurements verified on site before anything is ordered or built.
Can I edit the plan after it is generated?
Yes — that is the point of converting it. You can adjust the plan, rename rooms, and re-export as often as you need.