AI Floor Plan Generator Furnished DWG plans, free

Describe a floor plan in plain words, with the overall size, the rooms and the furniture, and the AI draws it as a CAD drawing in the free Innerscene viewer. Innerscene's drafting engine checks the plan for open rooms, blocked doors and overlapping furniture, and the AI fixes what it finds before the drawing opens as a DWG. Ask for changes in the chat until the layout works.

Free. Use your own Anthropic or OpenAI key.

Also from Innerscene: Circadian Lab, a free lighting calculator for room illuminance, melanopic EML, and glare.

An example drawing made with AI

Download the DWG

Watch how it works

How it works

  1. 1. Describe it or add a photoType what you want in plain words, with sizes if you know them, or add a photo as a reference. Describe an object or a person.
  2. 2. The AI builds and checks itThe AI writes an OpenSCAD program for an object, or sets up the character generator for a person. It looks at six rendered views of the result and fixes what is wrong, up to five builds per message.
  3. 3. Refine and exportThe model opens in the viewer at real size. Ask for changes in the chat, move the sliders, then download it or pick a format from the Export menu.

Why make it with AI here

  • Walls have real thickness, doors show their swing, and every room is labelled with its measured area in m².
  • Dimension chains run along every outside wall and through the openings, so sizes can be read straight off the sheet.
  • The plan comes on an A3 sheet with a title block, north arrow and scale bar, at 1:50, 1:100 or another standard scale.

Prompts to try

Click one to open it in the AI panel, then change the sizes to suit.

Getting the floor plan out

  1. Download the DWG once the plan opens in the viewer.
  2. For other files, open the Export menu and choose DXF, PDF, SVG or PNG.
  3. Open the DWG in AutoCAD, BricsCAD or DraftSight and edit it layer by layer.

The drawing is in millimetres, on layers named to the US National CAD Standard (A-WALL, A-DOOR, A-GLAZ, A-FURN and more). Doors, windows and furniture are blocks you can move or replace.

Best export formats: DWG, DXF, PDF (vector)

Open DWG files in the free DWG viewer

Good to know

Each drawing is one storey with straight walls; curved walls, stairs, columns, roofs, sections, elevations and MEP are not drawn. It is a starting layout with no building code check, so it needs a professional review before construction.

Cost and privacy

You use your own Anthropic or OpenAI API key. It is stored only in your browser and sent only to that provider, which bills you directly: a model typically costs $0.05 to $0.30 at Standard quality and up to about $1 at Detailed, and Innerscene charges nothing. Your key and prompts are not sent to Innerscene; we record anonymous usage statistics such as the steps used, the model chosen, token counts, a cost estimate and whether a model was made.

How to get an Anthropic or OpenAI API key

Read the full guide: API keys, refining and exporting

Questions

▶Is the AI floor plan generator free?
The tool is free and Innerscene charges nothing. Your own Anthropic or OpenAI key pays for the AI, usually about $0.05 to $0.50 per drawing at Standard quality.
▶What does the drawing include?
Walls with real thickness, doors with swing arcs, windows, furniture and fixtures as blocks, room names with areas, dimension chains and overall dimensions, all on an A3 sheet with a title block.
▶How does the AI check its own plan?
The drafting engine checks that every room is enclosed and reachable through a door, that doors and windows fit their walls, that door swings are clear and that furniture does not overlap. The AI sees the drawing with numbered red marks on any problems, fixes them and redraws.
▶Can I change the plan after it is drawn?
Yes. Ask in the chat, for example "make the bedroom 3.6 m wide" or "add a window to the kitchen", and the AI redraws and rechecks it.

What it can make

Floor plans and layouts

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