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How Interior Designers Use iPhone LiDAR to Measure Rooms and Get SketchUp-Ready Models (2027 Guide)
Stop re-measuring rooms. See how interior designers use iPhone LiDAR to capture a space in minutes and get SketchUp and AutoCAD files back in about 2 business days.
Every interior project starts the same way: someone has to measure the room. Too often that's you, a tape measure and a notepad, followed by an evening redrawing it all in SketchUp.
Then a client asks about the soffit height or the distance from the window to the corner, and you're back on site.
If you own an iPhone Pro, you already carry a better tool. Its LiDAR scanner can capture a full room in a few minutes. Paired with the right app, that scan becomes a dimensioned floor plan or a SketchUp model you can start designing in.
Quick answer
Interior designers use iPhone LiDAR to replace manual site measuring. You walk each room with an iPhone 12 Pro or newer Pro model, add photos and notes, then export the scan or order a finished model.
With Scanbrix, scanning is free and you pay $0.20 per sq ft for SketchUp (SKP), AutoCAD (DWG) or Revit (RVT) files, typically delivered in about 2 business days. For a full app-by-app breakdown, see our guide to the best iPhone LiDAR apps for 2027.
What LiDAR captures well (and what it doesn't) in interiors
LiDAR is excellent at the geometry designers need most: walls, openings and ceiling heights. It struggles with reflective and see-through surfaces, so plan to note those by hand.
Element | How LiDAR handles it |
Wall lengths and room shape | Very well |
Ceiling heights, soffits, beams | Very Well |
Doors and windows | Very Well |
Built-ins and cabinetry | Well for overall size - Confirm before install |
Mirrors and large glass | Poorly - Scan around them |
Very dark or glossy finishes | Inconsistently |
Outlets, switches, vents | Modeled when visible |
Heavy clutter or furniture | Hides walls behind it |
Your site visit, step by step
A typical living room and kitchen takes about 10 to 15 minutes to scan, compared with an hour or more by tape. [CONFIRM: typical scan time per room from Scanbrix users.]
Prep before you arrive. Ask the client to clear items off counters and pull furniture a few inches from walls.
Turn on every light and open interior doors. LiDAR needs a clear line of sight between rooms.
Start in a corner and walk the perimeter. Move slowly, about one step per second, keeping the floor-to-ceiling line in view.
Sweep up and down at key features. Catch soffits, beams, window sills and the tops of built-ins.
Take one tape measurement per room. A single wall or doorway gives you a quick check later.
Photograph each wall straight on. These capture outlets, switches, vents, trim profiles and finishes for your specs.
Add voice or text notes. Record anything a scan can't tell you, like "existing oak floor, client wants to keep" or "gas line behind range."
Order or export before you leave. Confirm the scan looks complete on screen so you don't need a return trip.
Interior capture checklist
Print this or save it to your phone for every site visit.
Room geometry
Full perimeter of every room, including closets and alcoves
Ceiling heights, plus soffits, beams and bulkheads
Door and window openings, with sill and head heights
Details for your design
Outlets, switches, thermostats and vents (photo of each wall)
Plumbing locations: sinks, toilets, tub, shower, laundry
Radiators, baseboard heaters and HVAC returns
Existing built-ins, trim and crown profiles
Flooring type and transitions between rooms
Context
One tape measurement per room for a quick check
Notes on what stays, what goes and client priorities
Photos of views, natural light and problem areas
From scan to SketchUp and AutoCAD
A raw scan is a mesh or point cloud. To design in it, you need clean walls, openings and dimensions. You have two ways to get there.
Option 1: Model it yourself. Export the scan (OBJ, DXF or point cloud) and trace over it in SketchUp or AutoCAD. This is free in cash but can take hours per floor.
Option 2: Order a finished model. With Scanbrix, you order the file format you design in:
SketchUp (SKP): a clean 3D shell with walls, openings and ceiling heights, ready for furniture, finishes and renders.
AutoCAD (DWG): dimensioned floor plans, sections and elevations for drawings, architects and contractors.
Revit (RVT): for studios that work in BIM or hand off to an architect.
A person checks every dimension against your capture before delivery. Files typically arrive in about 2 business days, in imperial or metric.
Once the shell is in SketchUp, your usual workflow takes over: furniture layouts, material studies, renders and client presentations.
Time and cost: tape measure vs. scan
For most studios, the saving is billable hours, not the tape measure. Here's an example for a 2,400 sq ft home at a $150/hour design rate. Swap in your own numbers.
Step | Tape and redraw | Scan + Scanbrix model |
On-site measuring | 3 hours | 15 minutes |
Drafting the existing plan | 6 hours | 0 hours |
Checking and cleanup | 1 hour | 15 minutes |
Designer time | 10 hours ($1,500) | 30 mins ($75) |
Model cost | $0 | $480 |
Total | $1,500 | $555 |
You also cut return trips for missed measurements, and you start designing days sooner.
Which scanning app fits a design studio?
It comes down to whether you want to draw the model yourself.
If you want… | Consider | Why |
Finished SketchUp or AutoCAD files | Scanbrix | Free scanning; SKP, DWG or RVT at $0.20/sq ft |
To model it yourself from a scan | Polycam | Exports OBJ, DXF and point clouds |
Quick 2D plans with estimates | MagicPlan | Floor plans plus estimating and PDF reports |
A low-cost scan for reference | 3D Scanner App | Budget plans with DXF floor plans |
Photo-real walkthroughs for clients | Scaniverse | Free Gaussian splat captures |
Prices as of October 2026. For a full breakdown, read our guide to the best iPhone LiDAR apps for 2027.
Frequently asked questions
Do I need a special device to scan rooms?
No. Any iPhone 12 Pro or newer Pro or Pro Max model has LiDAR, including the iPhone 18 Pro. iPad Pro models from 2020 on work too. Standard iPhones and the foldable iPhone Duo don't have LiDAR.
Is an iPhone scan accurate enough for interior design?
Yes, for space planning, furniture layouts and most finish selections. Scanbrix reports wall-to-wall results typically within about 1% after a human check. Always field-verify critical dimensions for custom millwork before fabrication.
Can I get a SketchUp model from an iPhone scan?
Yes. Most apps export a mesh you can import and trace. Scanbrix delivers a clean, finished SketchUp (SKP) model, typically in about 2 business days.
How much does it cost to get a floor plan from a scan?
Scanning in the Scanbrix app is free. Finished models cost $0.20 per sq ft with a $50 minimum, so a 1,200 sq ft apartment costs $240.
Can I scan a single room instead of the whole house?
Yes. Scan only the rooms in your scope. You pay only for the square footage you order, subject to the $50 minimum.
What about mirrors, glass and dark finishes?
These are the hardest surfaces for LiDAR. Cover large mirrors if you can, turn on every light and note glass sizes by hand.
Can I share the scan with my contractor or architect?
Yes. Scanbrix keeps photos, notes and teammates in one project, and DWG or RVT files hand off cleanly to trades and architects.
The bottom line
Measuring a room shouldn't eat your design time. With an iPhone Pro and the right app, you can capture a space in minutes and start designing in SketchUp within days.
Scan free with Scanbrix and pay $0.20 per sq ft only when you order a model.
