What is LOD in BIM?
In Building Information Modelling (BIM), LOD stands for Level of Development.
It describes how much detail a 3D model contains and how accurate that information is.
| LOD | Description | Geometry Detail | Information Detail | Example Use |
|---|---|---|---|---|
| LOD 100 | Conceptual model showing building form | Simple massing shapes, approximate size and location | Minimal or no non-graphic data | Early feasibility studies, volume analysis |
| LOD 200 | Generic model with approximate geometry | Elements modelled with estimated dimensions, orientation, and location | Generic element categories (e.g., “window,” “wall”) without exact specs | Concept design, space planning, early coordination |
| LOD 300 | Accurate, coordinated model | Elements modelled to exact dimensions and geometry from scan data | Element types, basic materials, and key attributes | As-built documentation, detailed design submissions |
| LOD 400 | Fabrication-level model | Fully detailed geometry including joints, fixings, penetrations, and tolerances | Manufacturer-specific product data, assembly details | Prefabrication, shop drawings, off-site manufacturing |
| LOD 500 | Verified record model | Geometry validated against the actual building with survey accuracy | Complete as-installed data for operations and maintenance | Facility management, asset tracking, refurbishment planning |
Scan Built 3D Approach
We specialise in LOD 300–500 for as-built documentation. Our models are built from survey-grade laser scans, meaning they are both accurate and project-ready.
Whether you need a Revit or Archicad model or just DWGs, we tailor the LOD to suit your purpose — from concept planning through to fabrication and facility management.
Rationalising Models for Practical Use
Laser scans capture every real-world imperfection — walls out of square, sloping floors, uneven openings. While this level of accuracy is valuable for reference, it can make a 3D model or DWG file difficult for architects, engineers, and other users to work with in design software.
We rationalise our models to agreed tolerances so that:
Walls and columns are squared where appropriate.
Levels and grids align for seamless documentation.
Significant deviations are flagged for site attention.
This balance keeps your model accurate where it matters, but clean and ready for design, documentation, or fabrication.
Why LOD Matters in Scan-to-BIM
When we convert a laser scan (point cloud) into a 3D model, we agree on an LOD specification with our clients before starting. This ensures:
Clarity – Everyone knows exactly what will be modelled and how detailed it will be.
Efficiency – We don’t over-model unnecessary details, saving time and budget.
Accuracy – We match the right level of detail to your project needs.
Ready to get started?
Contact us today to discuss your project and get a tailored Scan-to-BIM solution that delivers accuracy, clarity, and practical usability. Request a Quote