Turn a floor-plan doodle into 3D cutaway renders of every room

Doodle the plan and photograph it

Draw each room as a rectangle. Add doors as a line and a quarter circle, furniture as boxes and circles, and a thick line where the windows are. You do not need a ruler.

Write the room name under each one and a note of what matters, like "bed + 2 side tables", "3 stools, open shelves" or "freestanding tub!". The notes tell Claude what you care about. Photograph the sheet straight on in even light.

Have Claude read the plan

Ask Claude to go room by room and list the furniture it sees, where each piece sits and where the doors and windows are. Check the list against your drawing before going on: anything Claude misreads here will be wrong in the render.

A bare plan makes a bare room. Let Claude add a few things that fit (a lamp on the nightstand, a plant, a rug) and mark them as additions so you can strike any you do not want.

Here is a photo of my floor-plan doodle. Go room by room. For each room give: the room name, every piece of furniture you can see and where it sits (against which wall, in the middle, by the window), the doors and windows, and my handwritten notes. Then suggest up to three small things that would fit each room (lamp, plant, rug, shelving) and mark them as ADDED. Do not change what I drew.

Lock the style words

Every render ends with the same style words, so the rooms look like one home. In the reel that was "soft warm lighting, miniature diorama, plain white background, high detail".

If you want a particular look (oak floors, white walls, terrazzo), add it once and keep it in every prompt.

Write one prompt per room

Each prompt follows one pattern: "Isometric 3D cutaway render of a [room] with [furniture list], [style words]". The furniture list comes straight from the step above.

The reel's prompts had six to eight things each. A short list is also easier to check against the render.

Write one image prompt per room using this pattern: "Isometric 3D cutaway render of a [room] with [furniture list from the plan, plus the ADDED items I kept], soft warm lighting, miniature diorama, plain white background, high detail". Six to eight items per room, with the thing I noted as most important first. Keep the style words identical in every prompt. Vertical 9:16 frame.

Add the whole home from above

The last render pulls back to show every room at once, seen from above with the roof taken off. It names the rooms instead of every piece of furniture.

Now write one prompt for the whole home: "Top-down isometric 3D cutaway render of a whole small house seen from above with the roof removed, [every room name] all furnished, walls cut away, soft warm lighting, miniature architectural diorama, plain white background".

Generate the renders

Run each prompt at 9:16. We used Z Image Turbo through the Higgsfield API (about $0.015 a picture), but Nano Banana, FLUX or Midjourney take the same prompts.

Make two or three of each and keep the one closest to your plan. If a piece is missing or in the wrong place, have Claude move it to the front of the list or name its position ("bed against the back wall") and run it again.

Know what it will not do

The renders follow your furniture list and the style, not your measurements. Room sizes, wall positions and the exact arrangement are the model's own. The whole-home view in the reel shows furnished rooms, but not the walls exactly where the doodle put them.

Use them to see how a room could feel and to share an idea. For anything you will build or buy from, use measured drawings.