What is L.O.D? Understanding Level of Development

WHAT IS L.O.D? UNDERSTANDING LOD REQUIREMENTS AND THE IMPLICATIONS TO YOUR MODEL

As revit users, we are all familiar with creating 3D models, and producing the 2D documentation required for our discipline. When working on projects, we often have to share our models and information with other design disciplines in order to collaboratively build a BIM model. We all need each other to provide correct, accurate and reliable model elements at different stages of a project. Level of Development (LOD) is a scale used to show the reliability of specific model elements at different times during model development. The main purpose of LOD, is to clarify what each member of a design/construction team is required to author in their models, at each stage, and to what extent others can rely on them.

What does LOD stand for?

LOD stands for Level Of Development. 

What is LOD

The industry best practice guideline for LOD specifications is The BIM Forum™ Level of Development (LOD) Specification (

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