It depends on which floor plan you mean, and that's where most quotes go wrong. A 2D furniture or technical plan is a drawing, and its workload really does scale with area, so I price it per square metre: from €5 per m², which makes a 60 m² flat €300. A 3D floor plan, the cut-away top view with real furniture, materials and light, is a rendered image. Its workload scales with what's inside the room, not with the size of the room, so I quote it per view like any other render, starting from the interior rate.
Two different products. Same name.
Why square metres work for drawings
A technical or furniture plan is lines, dimensions, door swings, a furniture layout and labels. Double the floor area and you roughly double the walls to trace, the rooms to annotate and the furniture to place. The relationship isn't perfect, but it's close enough that per m² is fair to both sides, and it lets an agent price a whole building of units before sending a single file.
The minimum order of €200 covers the tiny ones. A 30 m² studio at €5 per m² would be €150 on its own, so it lands on the minimum unless it's ordered with something else. Drawings also aren't part of the 10% multi-render discount on my architectural rendering prices page. That discount applies to the render subtotal only.
Why square metres break for a 3D floor plan
Here's a pair of jobs I'd quote almost the same. A 35 m² studio with a kitchen run, a bathroom, a bed, a sofa, a dining table, rugs, plants and a herringbone floor. And a 90 m² flat where half the area is an open living room with one sofa and a bare oak floor.
Per square metre, the second would cost two and a half times more.
In practice? The studio takes me longer.
The time in a 3D plan goes into furniture count, material variety and how tightly packed the space is. Every sofa, tap, towel and lamp has to be modelled or chosen, scaled and placed. A kitchen and a bathroom are the slowest rooms by far, because they're full of small objects that read as clutter if they're wrong. Wall height, the cut line and the lighting setup take about the same effort for a small flat as for a large one. Render time in Cycles barely changes either: a 4000 px top-down view usually finishes in 20 to 40 minutes, whatever the area.
So a per-m² price for 3D plans is either too expensive for big, sparse flats or a loss on small, dense ones. Studios that sell 3D plans per m² tend to solve that by using the same generic furniture in every plan. You can usually spot those plans from across the room, because the same grey sofa, the same round rug and the same potted fig turn up in every unit of every building they've ever drawn.
What sets the price of one view
A 3D floor plan is priced as an interior view, so the starting point is the same €250 per camera angle as on the interior rendering services page. What moves it above the starting point:
- Unit size and furniture density. A one-bedroom is the baseline; a three-bedroom with two bathrooms takes longer.
- Whether the furniture is specified (real products with links) or styled by me from a mood board. Specified products take longer to match.
- Top-down versus angled. An isometric or 45-degree view shows wall height and makes the room feel bigger, but it needs finished walls, skirting and door frames on every side.
- Whether you need labels, room areas or a dimension overlay on the image.
The quote is fixed in writing before I start, and two consolidated revision rounds are included, the same as any render.
A real example of how it goes wrong
Last year an agent sent me a 48 m² one-bedroom as a scanned PDF, with a note asking for "a 3D plan, same as the 2D one but nicer". There were no dimensions on the scan and the kitchen was drawn as a rectangle. I spent the first hour measuring off a door width (assuming a standard 80 cm leaf), then the first preview went back and forth because the kitchen layout was a guess.
The fix was simple. The developer had a DWG with the actual kitchen elevation, and once it arrived the second round took twenty minutes. If that file had come first, the job would have been done in one round.
Send the CAD or a dimensioned PDF, plus the kitchen and bathroom layouts if they exist. Those two rooms are where the guessing happens.
Mixing plans and renders in one order
Most listings need a mix. A common set for a single flat is a 2D furniture plan for the brochure, a 3D floor plan for the listing's first photo slot and one or two interior views of the living room and kitchen.
The plan drawing is priced per m², the 3D plan and the interior views are renders. Once you have three or more renders in the same order, the 10% discount applies to those renders (the published three-view apartment example comes to €675 instead of €750). The drawing stays at its own rate. That's also the order I'd produce them in: the 2D plan first, because once it's approved, the furniture layout in the 3D plan and the interior views is already settled and nothing has to be moved twice.
You can see the level of detail I aim for in the studio apartment 3D plan study, and other interiors in the portfolio.
What I'd actually order for a development
For a building with 20 or 40 units, don't order a 3D plan of every unit. Order 2D plans of all of them, because buyers compare layouts and those are cheap per m². Then pick the three or four unit types that cover most of the sales (a studio, a one-bed, a two-bed, maybe the penthouse) and do 3D plans of those. A buyer looking at a mirrored one-bed doesn't need its own render; they need to know it's the same as the one they've just seen.
The mistake I see most often runs the other way. Someone orders 3D plans first, then changes the kitchen supplier, and every plan with that kitchen needs redoing. Lock the furniture and kitchen layout on the 2D plans, and only then go 3D.
And keep the 3D plan honest. A bed that's 10 cm too short or a sofa scaled down to make the room look bigger is the kind of thing a buyer notices on the viewing, and it doesn't help the sale.
If you have plans for a unit or a whole building, send them through the quote form and I'll come back with a non-binding price from the drawings, split into plans and renders so you can see exactly where the money goes.