Where to Draw a Floor Plan With AI for Free

The short version: you can draw a decent floor plan with AI for free using tools like Planner5D, RoomSketcher, HomeByMe, or Canva's AI floor plan maker, but every single one of them gates the good bits (high-res export, 3D render, extra rooms) behind a paid tier once you push past a basic layout. Treat the free version as a sketching tool to get your layout right, then decide if you need to pay for the finished output.

What "free AI floor plan" means in 2026

Nobody has built a tool where you type "three bed semi with an open plan kitchen" and it spits out a finished, accurate floor plan with zero input from you. What exists is closer to assisted drawing: you place walls, doors and furniture on a grid, and AI fills in suggestions, measurements, or furniture placement based on the room shape you've given it. Marketing copy calls this "AI floor plan generation." It's really AI-assisted drafting. Worth knowing before you spend an hour expecting magic.

If you're planning a renovation, a home office, or just trying to work out whether a sofa will fit, that distinction barely matters. You still get a usable plan. If you're hoping to hand something to a builder or architect without them redrawing it, it matters a great deal.

The actual free tools worth trying

• Planner5D, free web and app version, drag and drop walls and furniture, basic 3D view included. Exporting a high-res image or opening up the full catalogue of furniture sits behind a one-off payment, usually under £15.
• RoomSketcher, free to draw, free to view on screen, but you pay (typically £29 to £75 depending on package) to download a high-resolution plan or get a 3D render you can use in a brief.
• HomeByMe by Dassault Systèmes, generous free tier, good for room layout and basic measurements, snapshot export is free, full print-quality export isn't.
• Canva, not built specifically for floor plans but has a floor plan template category with AI-assisted layout suggestions inside the Magic Design features. Good if you already use Canva and want something quick without learning new software.
• SmartDraw, has a free trial rather than a permanent free tier, but it's worth mentioning because its AI symbol recognition (turning rough sketches into cleaner lines) is more automated than most of the others.

None of these are architectural software. If you need a plan for planning permission or building regs in the UK, none of this replaces an architect or a RICS-qualified surveyor, and you should say so upfront to whoever you're sending it to.

A worked example: say you run a small home-based business

Say you run a small home-based business and you're converting your garage into a studio or consultation room. You want to work out whether a desk, a client chair, a filing cabinet and a small kitchenette will fit without it feeling like a cupboard.

Here's the step-by-step most people skip because they jump straight into a tool:

• Measure the actual room first, by hand, with a tape measure. Garage dimensions are rarely what you remember them to be. A "20 foot garage" is often 18 foot 4 once you measure past the stud wall.
• Open a free tool like Planner5D and set the room dimensions exactly as measured, not rounded.
• Add doors and windows in their real positions, including swing direction. This is the step that ruins most DIY plans because people forget a door needs 90cm of clear swing space.
• Drop in furniture using real dimensions, not the tool's default sizes. A standard office desk is roughly 120cm by 60cm; the tool's default might be smaller.
• Let the AI suggestion feature propose a layout, then ignore at least half of it, because it will often suggest furniture arrangements that look fine from above but block a door or window in practice.
• Export a basic image for free, or pay the one-off fee if you want a clean, high-res version to send to a tradesperson.

Total time for a basic version of this: about 45 minutes if you've already measured the room. That's the realistic number, not the "five minutes with AI" claim you'll see elsewhere.

The uncomfortable bit nobody puts in these roundups

Most of these tools are not that much faster than drawing on graph paper if your goal is a single accurate room layout. The speed advantage of AI floor plan tools shows up when you're iterating, trying ten different furniture arrangements in twenty minutes, not when you're producing one final plan. If you only need one plan, a tape measure, graph paper and twenty minutes will get you something just as useful, and arguably more accurate, because you're not fighting the tool's default measurements and snapping grid.

The other thing worth saying plainly: the "free" in most of these tools is a funnel, not a gift. Planner5D, RoomSketcher and HomeByMe all make their money on the export and the 3D render. The free tier exists to get you emotionally invested in a layout so that paying £20 to download it feels small by comparison. That's not a criticism, it's just how the business model works, and it's worth knowing before you spend two hours perfecting a plan you then can't get out of the tool without paying.

When free is enough

Free works well for:

• Working out furniture fit before you buy something
• Showing a partner or housemate a rough idea of a layout change
• Planning a small home gym setup, similar in spirit to working out space for ab workouts you can do at home without equipment, where floor space and clearance matter more than square footage
• Sketching out a playroom or kids' corner, the kind of space where you also want to think about screen-free activity like the ones in this list of free offline games for toddlers on a tablet, so the layout works for more than one use

Free is not enough when you need a plan for permissions, for a mortgage valuation, or for a contractor who needs exact wall thicknesses and load-bearing information. Pay an architect or structural engineer for that. It's a few hundred pounds that saves you a much bigger bill later.

What to do with the plan once you've made it

A floor plan on its own doesn't move a project forward, it's a planning tool. If the layout is part of a bigger project, like setting up a home studio for content or consulting work, treat the room plan the same way you'd treat any other piece of project planning, the way a founder planning a short break away would map out logistics before booking anything: get the rough shape right for free, then spend money only on the parts that need it, like a real render for a planning application or a builder's quote.

If you're setting up a space for a small business, whether that's a studio, a consulting room, or a spot to film from, it's worth thinking about the room the same way you'd think about any other business decision: what's the cheapest version that still gets the job done. The same logic applies if you're weighing up paying for AI help in other parts of your business; there's a reasonable breakdown of what an AI consultant typically costs if you're trying to work out where free tools stop being enough.

Quick comparison for picking one

• Want the simplest interface: Canva, especially if you already have an account
• Want the most generous free tier before hitting a paywall: HomeByMe
• Want 3D visualisation included free: Planner5D
• Want the cleanest final export and don't mind paying once you're committed: RoomSketcher
• Want AI to clean up a rough hand sketch: SmartDraw's trial

Frequently asked questions

Is there a completely free AI tool that draws a floor plan from a photo?

Not reliably. Some tools claim to convert a photo or hand sketch into a digital floor plan, but accuracy is poor without manual correction, and the full conversion feature is usually locked behind a paid tier. Treat photo-to-plan features as a rough starting point, not a finished output.

Can I use a free AI floor plan for planning permission in the UK?

No. Planning applications and building regulations need accurate, scaled drawings, usually produced by an architect or qualified drafter. A free consumer tool is fine for your own planning but won't meet the standard a local authority expects.

Which free floor plan tool is best for a small business space?

HomeByMe or Planner5D both work well for sketching a studio, office, or consulting room layout, since both let you test furniture placement for free before deciding if you need a paid export.

How accurate are the measurements in free floor plan apps?

Only as accurate as what you input. The tools don't measure your room for you, so you need to measure by hand first and enter exact dimensions, otherwise the layout will look right on screen and be wrong in reality.