Level of Development

LOD 100


Essentially the equivalent of conceptual design, the model consists of overall building massing.

LOD 200


Model elements consist of generalized systems or assemblies with approximate quantities, size, shape, location and orientation.

LOD 300


Model elements are suitable for the generation of traditional construction documents and shop drawings.

LOD 350


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LOD 400


This level of development is considered to be suitable for fabrication and assembly (i.e. full set of construction documents including shop drawings)

LOD 500


The final level of development, highly detailed model is suitable for maintenance and operations of the facility, with all changes during construction documented (i.e. post-construction asbuilts)