Understanding LOD

Like any industry, Building Information Modeling (BIM) is filled with acronyms. But like any industry, you shouldn't feel intimidated by the jargon!


LOD stands for Level of Development as defined by the BIM Forum and comes in several flavors:

LOD100: Very basic, conceptual modeling. General blocky shapes including rough overall dimensions.

LOD200: Models with visually approximate sizes, shapes, and orientations.

LOD300: Accurate models suitable for producing scaled shop drawings. Sometime models at this stage include data inputs.

LOD400: Models at this stage are precise detailed assemblies ready for pre-fabrication. Models have data inputs.

LOD500: Refers to as-built conditions so that they can be used for record drawings and facility maintenance purposes.


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For some projects, a low LOD such as LOD100 or LOD200 will suffice as the most cost effective approach. But for other projects, a higher level of development is required. For these projects the LOD often increases at each stage of the design, from LOD100 at the conceptual planning stage, progressing gradually all the way up to LOD400 during pre-construction.


Don't feel lost! Contact us today for a free consultation to understand your scope as it fits into the LOD framework.


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