Every interior design project starts with the same question: what are we actually working with? Before you specify a single sofa or pick a paint colour, you need an accurate base plan of the room. This guide walks through how to create floor plans for interior designers - capturing the space quickly, testing layouts with real-size furniture before anything is moved, and turning the result into something polished enough to put in front of a client.
Why the base plan matters more than the mood board
A beautiful scheme that does not fit the room is wasted effort. Walkways that are too narrow, a console that blocks a radiator, a rug that swims in the space - these are dimension problems, not taste problems, and they are far cheaper to catch on a plan than after delivery day. An accurate floor plan is the shared reference that keeps your concept, your tradespeople, and your client all talking about the same room.
The trouble is that measuring by hand with a tape and a notepad is slow, error-prone, and easy to get wrong on the awkward angles that older properties love. A small mistake in a corner alcove ripples through every layout decision that follows. The goal is to capture the shell once, accurately, and then spend your creative energy on the design rather than re-measuring.
Capture an accurate base plan in minutes
RoomPlot gives you two ways to capture a room, and you can mix them on the same project:
- LiDAR scan. On an iPhone or iPad Pro, walk the room and let the scanner detect walls, doors, and windows automatically. A whole property can be captured room by room rather than one space at a time.
- Draw it manually. No LiDAR device, or working from a survey you already have? Draw walls directly, then enter exact lengths. Either way you get a true-to-scale plan.
Once the shell is captured, you are not locked in. You can edit walls, doors, windows, and openings after scanning - move, resize, rotate, add, or delete any element - so a slightly-off scan or a planned knock-through is quick to correct. Snapping and a grid keep everything tidy, undo and redo cover every step, and on-plan dimensions plus a scale bar mean the drawing always reads true. Areas are detected and calculated automatically, so you have each room's floor area without reaching for a calculator. Multi-floor projects let you add and switch between storeys for whole-home schemes.
Tip. Work in the units your client thinks in. RoomPlot supports metric and imperial throughout, so you can present a plan in feet and inches to one client and metres to another without redrawing a thing.
Test the layout with real-size furniture before you move a thing
This is where a floor plan earns its keep for an interior designer. Instead of dragging an actual sofa across a room to see if it fits, you test the idea on the plan first. RoomPlot's object and furniture libraries place pieces at real sizes, so a three-seater takes up exactly the footprint it will in the room - not a generic rectangle that flatters the space.
From there you can:
- Drop furniture and fixtures onto the plan and slide them around until the circulation works.
- Resize objects to match a specific piece you are sourcing, so the plan reflects the real specification.
- Build custom symbols for anything unusual - a bespoke joinery run, an awkward built-in - with the custom-symbol editor.
- Multi-select a group of pieces and move, rotate, or restyle them together when you are trialling a whole zone.
Because every piece is to scale against a to-scale room, the layout you sign off on the screen is the one that will actually work on site. For a step-by-step on getting that first drawing right, see our guide on how to create a floor plan.
Colours, labels, and zones that read at a glance
A working plan should communicate, not just measure. RoomPlot lets you give each area its own name, colour, and label, so a scheme reads instantly: living in warm neutral, kitchen in a cooler tone, a study picked out in its own shade. Styled zone labels keep room names clean and consistent across the drawing, and colour pickers let you match the plan to the palette of the scheme itself.
These choices are not just decoration. Colour-coding zones helps a client understand the flow of a home before they have read a single dimension, and it makes your presentation feel considered rather than technical. Labels and callouts let you flag the things you want to draw attention to - the feature wall, the proposed reading nook, the spot for the statement light.
Present to clients and export high-resolution images and PDF
When the layout is settled, the plan becomes a deliverable. RoomPlot produces branded PDF reports with your company logo, address, and client details, so what lands in the client's inbox looks like it came from your studio - not a generic app. You control what the report includes, and you can present in 2D, 3D, or wireframe to suit the moment: a clean 2D plan for the technical conversation, a 3D view to help a client picture the space.
- High-resolution images and PDF for proposals, presentations, and printed boards.
- DXF / CAD export to hand a precise drawing to an architect, joiner, or contractor.
- USDZ 3D to share an interactive model of the space.
Because the project syncs across your devices, you can scan on an iPhone on site and continue editing on an iPad back at the studio. Browse more guides for tips on getting the most out of reports and exports.
A faster path from empty room to signed-off scheme
Pulling it together, the workflow for floor plans for interior designers is short: capture the shell accurately with a LiDAR scan or a manual draw, correct anything that needs it, test the layout with real-size furniture, colour and label the zones so the plan speaks for itself, then export a branded PDF or high-resolution image to present. The base plan stops being a chore and becomes the tool that carries the whole project.
Ready to draw your first plan? Download RoomPlot on your iPhone or iPad, scan or sketch a room, and have a client-ready floor plan in your hands before the kettle has boiled.