When drafting a contract or building execution plan, specifying the required Level of Development (LOD) is crucial.
The LOD Scale Explained
LOD 100 - Conceptual Design
Elements are represented as basic symbols or conceptual volume outlines.
LOD 200 - Schematic Design
Elements are modeled with general quantities, shapes, and location paths.
LOD 300 - Detailed Design
Elements are represented as specific systems with precise dimensions and geometries.
LOD 350 - Spatial Coordination
Includes specific connections, brackets, anchors, and interfaces.
LOD 400 - Fabrication Ready
Detailed models featuring weld specifications and joint splits ready for offsite fabrication.
LOD 500 - As-Built Record
Field-verified models matching exact built locations with maintenance manuals.
If you're modeling MEP systems specifically, see our breakdown of LOD levels used specifically in MEP models for discipline-specific benchmarks.
Need the Right Level of Detail for Your BIM Project?
Understanding LOD is essential - but applying the right level at the right project stage is what makes a BIM model truly valuable. From early-stage concepts to accurate as-built documentation, CAD Drafting Services provides BIM modeling support tailored to your project requirements.