Complete walkthrough: draw a room, furnish it, and view it in 3D
New here? This is the whole flow start to finish — draw your room, add furniture, run Smart Flow Check, and step inside in 3D.
New to RoomSketch3D? This is the complete tour, from blank canvas to a furnished room you can walk through in 3D — in a few minutes.
Five steps cover it: draw the room, add wall fixtures, furnish it, run Smart Flow Check, and switch to 3D.
Below, each stage has a picture from the current app and a link to the full guide for that stage, plus the two things most people do next: getting the wall lengths exactly right, and sharing or exporting the result. Work through it once on a simple room (or a template), and every other help page will make sense.
Step by step
- 1
Draw the room
On Home, under Start a new floor plan, choose Rectangular Floor Plan for a standard four-wall room: name the design, enter the width and length, pick units and ceiling height, and tap Create Floor Plan. For an L, T or U outline choose Custom Floor Plan and tap a shape (or Draw Your Own to place every corner). Your design opens in the editor, where you can move, split and add walls right on the plan (see Edit walls on the plan). The New Floor Plan box has quick sizes (10×12', 12×14', 15×18', 18×24'), a ft/in or m/cm switch and ceiling heights from 8' to 12' (or Custom). Other ways to start sit on the same Home screen: Floor Plan Image or PDF (trace it yourself or let AI draft it), Use Room Photo, Use Template (pre-designed layouts), From Backup (web app) and, in the iPhone and iPad app, AR Scan.
Rectangular Floor Plan: name it, type width and length, pick the ceiling height. - 2
Get the walls right
Measure the room inside, wall face to wall face, and make the plan match. Tap a wall, tap its length and type the measured value: a yellow pin marks the end that stays, an arrow the end that moves. Drag a wall to move it, split it with the scissors to make an L or a bump-out, or add rooms with Build → Add Room. Everything about walls is in Edit room size, walls and vertices.
Type a wall's measured length; the pin end stays, the arrow end moves. - 3
Add doors, windows, and stairs
Open the Build Panel (left rail). Click Door, then click the wall where the door goes. Repeat for windows, openings, fireplaces, and stairs. Set width and (for hinged doors) hinge side and swing direction in the Inspector. Position each one exactly: tap one of its two distances on the plan and type the measured distance from the corner. The settings bar under the plan shows Width, Height, Mount (sill height for a window) and From left / From right. See Add doors and Add windows.
Place a window or door, then type its distance from the corner. - 4
Furnish the space
Open the Furnish Panel (right rail). Pick a room type tab (Living Room, Bedroom, etc.). Click a furniture tile to place; drag to position. Use the Inspector to rotate (90° steps or exact angle), resize, or duplicate. Or search: type an everyday word (armchair, fridge, couch) in Search Furniture & Fixtures, tap a tile and press +Add. Every tile shows its real width × depth; type your own piece's exact size in its panel once it's on the plan. See Browsing the furniture catalog.
Search, tap a tile, +Add. The size under each tile is the real footprint. - 5
Run Smart Flow Check
It's always on — the Flow check button in the toolbar reads OK in green, or shows a count as you place furniture; tap it for the list. Address them as they appear: door swing blocks, crowded doorways, recliner clearance. Red items are physical conflicts (overlaps, a blocked door, a piece through a wall); amber ones are comfort (a coffee table too close to the sofa, a tall piece in front of a window). Fix the red ones first. A worked example is in Fixing a cramped room layout.
Flow Check lists what's in the way: red first, then amber. - 6
Switch to 3D
Click View in 3D (the cube button in the toolbar above the plan). Orbit with mouse-drag (or one-finger drag on mobile); pinch or scroll to zoom. Press the footprints button (Walk through) to walk: on a plan with several rooms, click a room marker (or any spot) to stand there, then move with W/A/S/D + mouse on desktop or the on-screen joystick on mobile. Dollhouse lifts the ceiling off for a view from above, as here on a two-bedroom apartment; High quality and Shadows make it look more real; Save image keeps a picture of the current view.
View in 3D: orbit the whole home, or walk in with the footprints button.
Tips
Save effort with a template
If your room is roughly standard, start from a furnished template (Living Room, Kitchen, Bedroom presets) instead of building from scratch.
Don't fight Smart Flow Check
When a warning appears, it's flagging a real problem (a door swinging into a sofa, a bookcase in front of a window). Fix it now, not later.
Measure before you draw
Ten minutes with a tape saves an hour of guessing: each wall's inside length, the door and window widths and their distance from the nearest corner, the sill heights, and the ceiling height. Sketch it on paper with the numbers, then type them in.
Walls first, furniture last
Furniture stays put when walls move, so get the outline, doors and windows right before you furnish. Otherwise you'll be re-checking every clearance after each wall change.
Common mistakes
Eyeballing wall lengths
Dragging a wall until it looks right is how plans end up a few inches off. Type the measured length instead; it's faster and exact.
Skipping the 3D check
A plan can pass Flow Check and still feel wrong: a sofa back blocking a window sill, a tall wardrobe looming over a small bedroom. Look in 3D before you buy anything.
Frequently asked questions
How long does it take to design a room?
5–15 minutes for a single room you're already familiar with. 30–60 minutes for a full apartment with multiple rooms.
Why does the video look different from my screen?
The video was recorded in June 2026, before Home existed. It starts from the old Create New popup and the green + button, and shows an older toolbar. Today you start every design on Home (the house button at the top left of the editor), the toolbar row above the plan starts with Layers, and walls are edited by tapping them on the plan. The steps on this page match the current app.
Do I need to save?
No. Every change is saved to your account as you make it; the cloud icon at the right of the toolbar turns green when the latest change is saved. See Auto-save and cloud sync.
Can I plan a whole house, not just one room?
Yes. Add rooms next to the first with Build → Add Room, split spaces with interior walls, and add floors in the Floors panel. Or start from a floor-plan image and let the app trace it.
Can I undo a mistake?
Yes: the Undo and Redo arrows in the toolbar above the plan step back and forward through your changes.
Start designing your room
Put this into practice in the floor planner: draw it, furnish it, walk through it in 3D — on web, iOS, and Android.
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