Yes, I can render a room from a floor plan only. A plan gives me the walls, the door swings, the window positions and the room sizes, and that's enough to build the space in 3D. What it doesn't give me is anything vertical: ceiling height, window sill and head heights, the kitchen wall units, the materials, the light. Every one of those gets either asked for or guessed, and the guesses are where a floor-plan-only render goes wrong.
So the honest answer is yes, with a short list of questions first.
What a floor plan actually tells me
A decent plan, even a PDF from an estate agent, carries more than people expect. I get the outline of each room, wall thicknesses, which way the doors open, where the windows sit along the wall and how wide they are, and usually the fixed things: bath, toilet, kitchen run, built-in wardrobes. If there's a scale bar or a single written dimension I can scale the whole drawing from it. A 3.60 m wall noted in the living room is enough to calibrate everything else to within a couple of centimetres.
From that I can model the shell of a typical flat in two to three hours. Walls go up, openings get cut, floors go down.
The trouble is that a plan is a horizontal slice through the building at about a metre above the floor, and a render is a picture taken from standing height looking sideways. Almost everything the camera sees is information the plan doesn't hold.
The six things a plan leaves out
These are the questions I send back when all I've received is a plan:
- Ceiling height. 2.50 m and 2.90 m are different rooms. If nobody knows, I assume 2.60 m for a modern flat and say so.
- Window heights. Sill at 90 cm or glazing down to the floor? This changes the light and the whole feel of the view.
- Beams, bulkheads and sloped ceilings. Top-floor flats and old buildings hide these, and a plan rarely shows them.
- Finishes. Floor, walls, kitchen fronts, worktop, bathroom tile.
- Orientation. Which way is north, and what floor is it on? That decides where the sun comes from.
- What's outside the window. A street, a courtyard, trees, sea.
Six questions, and most clients can answer four of them from memory in a two-line email. A phone photo of the existing room answers the rest better than any drawing: I can read ceiling height off a door frame (a standard door leaf is close to 2.0 m) and see where the radiators and beams are.
How I fill the gaps when nobody knows
Sometimes there's nothing to photograph. The building is a foundation slab, the developer's sections aren't drawn yet, and the marketing has to start anyway. Then I work from sensible defaults and write every one of them down in the first preview, so the client approves the assumption and not just the picture.
My defaults for a new-build apartment are a 2.60 m ceiling, internal doors 2.0 to 2.1 m high, window sills at 90 cm in bedrooms and full-height glazing wherever the plan shows a balcony door, worktops at 90 cm with wall units starting 50 to 60 cm above them, and skirting around 8 cm. None of that is clever. It's what gets built most of the time, and a viewer who has stood in a few flats will read the room as normal.
Materials are a bigger guess, so I don't guess silently. If there's no specification, I'll propose a calm, neutral scheme (pale oak floor, off-white walls, matt kitchen fronts) and send two or three reference images before modelling any furniture. It takes the client five minutes to say "warmer" or "less grey", and it saves a revision round later. You can see how much the finish choice carries an image in the spa bathroom study, where the plan is a simple rectangle and nearly all of the character comes from stone and light.
Where floor-plan-only renders go wrong
Last spring a developer's agent sent me a single PDF plan for a two-bedroom flat and asked for three interior views by the end of the week. No elevations, no sections. I asked my usual questions, got "standard everything" back, and modelled the living room with 90 cm sills. The first preview came back with one comment: the living room windows run floor to ceiling, that's the selling point of the block. It was a fair comment, and nothing on the plan could have told me. I rebuilt the facade wall and re-lit the room, which cost most of a day.
That's the typical failure. Not a wild error, just one wrong assumption about height that happens to be the thing the client cares about most.
The other common one is scale. Agent plans are often redrawn by hand from a survey and marked "not to scale", and they mean it. I've seen a bedroom drawn 40 cm wider than its written dimension. When the drawing and the numbers disagree I follow the numbers, and if there are no numbers at all I ask for one measurement, any measurement, before I start.
Here's the part people don't expect: a floor plan alone is often easier to work from than a plan plus forty Pinterest images with no priorities. With only a plan, the questions are obvious and few. With a mood board that contradicts itself, I'm guessing at taste, which is harder to check than a ceiling height.
A 3D floor plan is the safer first deliverable
If the plan really is all you have, consider starting with a 3D floor plan instead of eye-level views. It's the same model seen from above with the ceiling removed, furnished and lit. Ceiling height barely matters from that angle, window heights are hidden, and the image does a job that eye-level renders can't: it shows how the rooms connect and whether a sofa and a dining table both fit.
The studio apartment 3D plan in the portfolio was built this way. For small flats in particular, buyers want to understand the layout before they care about the mood, and a top-down view answers that in one picture. Once the layout is approved, dropping eye-level cameras into the same model is quick, because the walls, furniture and materials already exist.
What I'd actually send if I were the client
The plan, obviously, as a PDF or DWG rather than a screenshot of one. Then one written dimension if the drawing has none. Then answers to the six questions above, even rough ones: "about 2.7 m, windows to the floor in the living room, oak floor, white kitchen, third floor, faces south-west over a courtyard" is a complete brief for me. That sentence took fifteen seconds to write.
If the place exists, add four or five phone photos, one from each corner. If it doesn't, add anything the architect has, even an unfinished section or a facade sketch. And say which view matters most, because that's the one I'll check hardest.
What I wouldn't do is wait until the drawing set is complete. I've had clients hold a project back for a month to get proper elevations, when a two-line email would have covered it. Work that starts on stated assumptions and gets corrected at the first preview is nearly always faster than work that waits for perfect information.
Does working from a plan change the price or the timing?
Not the price. An interior view starts from EUR 250 per camera angle whether the input is a Revit model or a PDF, and three interior views of one apartment come to EUR 675 with the 10% combined discount. Two consolidated revision rounds are included either way. The full list is on the architectural rendering prices page.
Timing depends on the brief more than on the drawing. My target for a first preview is three business days after a complete brief, and with a plan-only project "complete" means the six questions are answered or the defaults are agreed. The clock starts there, not when the PDF arrives. In practice that back-and-forth adds a day, sometimes less.
One thing does change: I'd expect the first revision round to be used. With a full drawing set the first preview is often close to final. From a plan alone it's partly a question put to the client in picture form, and it's better to treat it that way than to hope every assumption landed.
If you have a plan and not much else, send it anyway. Tell me what you know about heights and finishes, and I'll come back with a non-binding quote and the short list of things I'd assume. You can read how the interior rendering services work first, or go straight to the quote form.