An as-built survey turns a real building into reliable data. It’s the first step before any renovation, lease plan or coordination work — and done with laser scanning, it’s faster and far more accurate than hand measurement.
What Is an As-Built Survey?
An as-built survey is a measured record of a building or site in its current, constructed state. It documents dimensions, layout, structural elements and (when required) MEP systems, producing the accurate base data used for as-built drawings and BIM models.
The As-Built Survey Process
- Scope. We agree what to capture and to what level of detail.
- Scan. A 3D laser scanner records the site as a dense point cloud in a single visit.
- Process. Scans are registered, cleaned and tied to survey control.
- Deliver. You receive drawings, a BIM model, or the point cloud — whatever your workflow needs.
What You Get
- 2D as-built drawings (DWG, PDF) — plans, elevations, sections.
- A 3D BIM model when required.
- The registered point cloud as a permanent, re-measurable record.
When Do You Need an As-Built Survey?
Before renovations and fit-outs, for lease and BOMA area calculations, for MEP coordination, for facility and asset management, and for historic documentation. If the existing drawings are missing or unreliable, an as-built survey pays for itself by preventing rework. See also our guide to the existing conditions survey.
Book an As-Built Survey
simpleSCAN 3D captures your building accurately in a single visit and delivers drawings, BIM and point clouds nationwide.
Frequently Asked Questions
What is an as-built survey?
A measured record of a building as it currently stands, used to create accurate as-built drawings and BIM models.
How is an as-built survey done?
Most are now done with 3D laser scanning: the scanner captures the site as a point cloud, which is then turned into drawings or a model.
How much does an as-built survey cost?
It depends on building size, level of detail, site access and the deliverables required. A scope call gives the most reliable quote.
What is the difference between an as-built survey and a land survey?
An as-built survey documents the building and its constructed elements; a land survey establishes property boundaries and topography.
