Scan to BIM is the process of creating or updating a Building Information Model from measurements of an existing asset. A laser scanner, mobile mapping system or photogrammetry survey records the site as a point cloud. A BIM specialist then interprets that measured geometry and models the required building elements.
The point cloud is the geometric reference; the BIM model is the structured deliverable. Assisted tools can propose objects, but the result must be reviewed and completed against the specification. ATIS.cad’s Scan-to-BIM follows this principle: review proposed building objects before IFC export. ATIS.cad is in early access until the end of November 2026, on request and activated by the team. This is separate from the ATIS.cloud trial.
Scan to BIM: definition and scope
The term applies to existing conditions: renovation, retrofit, extension, heritage documentation, industrial revamping or facility management. It connects reality capture to BIM authoring. It does not describe the capture alone, and it does not cover every BIM project, because a new-build model can be designed without any scan.
What goes in and what comes out?
- Inputs: registered point cloud, project coordinates, survey control and available plans
- Modeling brief: required zones, object classes, attributes and naming rules
- Acceptance criteria: expected accuracy, authorized tolerances and validation method
- Outputs: native BIM model, IFC exchange file, drawings, schedules or asset data as specified
- Evidence: source point cloud and quality report used to verify the modeled geometry
When is Scan to BIM useful?
- Renovation design when reliable existing drawings are missing
- MEP coordination in occupied or technically complex buildings
- Heritage recording before restoration or structural work
- Industrial changes where equipment and pipework must be modeled as installed
- Facility management when a verified digital record is required
Scan to BIM compared with related terms
- Reality capture records the site; Scan to BIM adds interpretation and structured modeling
- Scan-to-CAD usually produces 2D or non-BIM geometry; Scan to BIM produces object-based information
- An as-built survey documents the actual condition; Scan to BIM is one way to deliver that record as a BIM model
- A digital twin may add live operational data; a Scan-to-BIM model is often its geometric foundation
Choose the right Scan-to-BIM resource
For execution details, follow the step-by-step Scan-to-BIM workflow. To explore LOD, software, roles and related guides from one place, use the Scan-to-BIM resource hub.
Scan to BIM turns measured existing conditions into a structured BIM deliverable. The point cloud is the evidence, the project brief defines the expected model, and acceptance criteria determine whether the output is fit for use.
Frequently asked questions
It is the process of using measured 3D data from an existing asset as the reference for creating or updating a structured BIM model.
No. A point cloud contains measured points and attributes. A BIM model contains interpreted objects, relationships and information created to meet a defined brief.
A registered point cloud, project coordinates, survey control, available plans and a modeling brief that defines scope and acceptance criteria.
Depending on the contract, it can deliver a native BIM model, IFC files, drawings, schedules, asset data, the source point cloud and a quality report.
Use the dedicated workflow guide for the five project phases, accuracy, LOD, formats, tools and quality checks. The resource hub organizes the wider topic.
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