Most renovation, addition and tenant-improvement projects start with the same unbilled chore: documenting existing conditions. Two people spend a day with tapes and a laser measure, then someone spends days more drafting it in Revit.

Old drawings rarely match what was built. Any miss surfaces later as a change order.

In 2027, the iPhone Pro in your pocket can handle much of that work. Its LiDAR scanner captures rooms in minutes, and scan-to-CAD services can turn that capture into a Revit or AutoCAD model. This guide covers where iPhone LiDAR fits, how accurate it really is, and when you still need a professional laser scan.

Quick answer

iPhone LiDAR is a fast, low-cost way to document existing conditions for renovations, additions, interiors and feasibility studies. It is accurate to a few centimeters, not millimeters. Use it for schematic and design development work, and bring in a terrestrial laser scanner for tight-tolerance or survey-grade jobs.

With Scanbrix, you scan free on an iPhone Pro and order Revit (RVT), AutoCAD (DWG) or SketchUp (SKP) files at $0.20 per sq ft, typically delivered in about 2 business days.

Where iPhone LiDAR fits

Think of iPhone LiDAR as the middle option: much faster than a tape survey, far cheaper and simpler than a laser scanner, with accuracy in between.

How accurate is iPhone LiDAR for architectural work?

Accurate enough for most design work on existing buildings, as long as you know its limits.

• Published testing: Researchers at the University of New Brunswick tested an iPhone 13 Pro against a surveyed control network. They measured about ±3 cm horizontal and ±7 mm vertical absolute accuracy (Chase et al., 2022).

• Checked deliverables: Scanbrix has a person check every dimension against the capture. It reports results typically within about 1% on wall-to-wall dimensions, with a free remodel or refund if a dimension doesn't hold up.

• Range matters: Apple rates the scanner to about 5 m. Walk the space rather than scanning large rooms from one spot.

What that means in practice: iPhone scans are well suited to schematic design, design development, space planning and permit-level existing plans. Field-verify critical dimensions, such as stair runs, millwork and equipment clearances, before construction documents.

An existing-conditions workflow, step by step

1. Scope the survey. List the floors, rooms and exterior areas you need, and decide which dimensions are critical.

2. Gather what exists. Pull old drawings, permits and site photos so you know where to look closely.

3. Prep the building. Turn on lights, open doors and clear walls where you can. Note locked or inaccessible spaces.

4. Scan room by room. Walk each space slowly with an iPhone 12 Pro or newer Pro model, keeping floor and ceiling lines in view. Stay within about 5 m of surfaces.

5. Capture control dimensions. Tape or laser-measure a few known spans per floor, such as a corridor, a structural bay and a floor-to-floor height.

6. Document what LiDAR can't see. Photograph and annotate MEP fixtures, structure above ceilings, finishes and conditions.

7. Order the model. Choose RVT, DWG or SKP, units and the floors to include.

8. QA in your own software. Check the delivered model against your control dimensions and old drawings before you design on it.

Deliverables: Revit, AutoCAD and SketchUp

Scanbrix delivers native files in the formats architects already use, in imperial or metric.

Every order is checked by a person against the capture and typically arrives in about 2 business days. Photos and notes from the site stay attached to the project, so your team can see the conditions behind each dimension.

Fees and time: an example

Existing conditions are often under-billed, so every hour saved goes straight to margin. Here's an example for a 6,000 sq ft office fit-out at a $125/hour blended rate. Swap in your own numbers.

The bigger win is often schedule: your team can start schematic design in days, not weeks. [CONFIRM: example hours with a few architect customers before publishing.]

When to use a professional laser scan instead

iPhone LiDAR isn't the right tool for every job. Bring in a terrestrial laser scanner or survey firm when:

• Tolerances are tight. Prefab, curtain wall, elevator or equipment fits need millimeter-level data.

• Spaces are tall or large. Atriums, warehouses and high facades sit beyond the iPhone's roughly 5 m range.

• Geometry is complex. Historic ornament, irregular structure and dense MEP above ceilings need more points.

• The data has legal weight. Boundary, topographic and certified surveys need a licensed surveyor.

Many firms use both: iPhone scans for most renovation and interior projects, and a laser scanner for the few jobs that truly need it.

Frequently asked questions

Can you get a Revit model from an iPhone scan?

Yes. Some apps export point clouds you can bring into Revit and model over yourself. Scanbrix delivers a finished RVT file from your iPhone scan, typically in about 2 business days.

Is iPhone LiDAR accurate enough for as-built drawings?

For schematic design, design development and most permit-level existing plans, yes. A 2022 University of New Brunswick study measured about ±3 cm accuracy on an iPhone 13 Pro. For tight tolerances, use a terrestrial laser scanner.

Which iPhones can scan existing conditions?

Any iPhone 12 Pro or newer Pro or Pro Max model, including the iPhone 18 Pro, and iPad Pro models from 2020 on. Standard iPhones and the foldable iPhone Duo don't have LiDAR.

How much does scan-to-Revit cost?

Scanbrix charges $0.20 per sq ft with a $50 minimum, so a 6,000 sq ft floor costs $1,200. Scanning in the app is free.

Can I scan exteriors and facades?

Low-rise exterior walls within about 5 m, yes. For tall facades and roofs, use a laser scanner, drone or survey firm.

Can I scan a multi-story building?

Yes. Scan each floor separately and capture a floor-to-floor height at a stair so the levels align. [CONFIRM: how Scanbrix handles multi-level projects.]

Will Scanbrix work for larger commercial projects?

Yes. Pricing scales by square foot, and Scanbrix offers custom pricing for teams and high-volume work.

The bottom line

For most renovation, interior and addition projects, an iPhone Pro scan gets you a reliable existing-conditions model in days, at a fraction of the staff time. Save the laser scanner for the jobs that truly need millimeters.

Scan free with Scanbrix and order Revit, AutoCAD or SketchUp files at $0.20 per sq ft.

Download Scanbrix and scan your next project →

Comparing tools? Read our guide to the best iPhone LiDAR apps for 2027.