Level of Detail (LOD) is a crucial concept in BIM that defines the precision and completeness of a model. It ranges from LOD 100 (conceptual design) to LOD 500 (as-built stage), each specifying different levels of detail and development. Understanding LOD helps stakeholders effectively communicate project requirements, expectations, and responsibilities. Utilizing LOD ensures that all parties are on the same page, enhances collaboration, reduces errors, and improves project efficiency. By matching the appropriate LOD to project phases, from design to construction and maintenance, teams can optimize resources and achieve better outcomes in architectural, engineering, and construction projects.