ISO 7817-1 Level of Information Need released a year ago [2024-06] outlines concepts and principles of information requirements, and Level of Development (LOD) supports implementation of the geometric aspects of that standard. They interoperate synergistically to provide a practicable toolset for data management of built environment projects and resulting durable assets. Learning Objectives: [1] Describe how Level of Information Need helps formulate Project Information Requirements (PIR) [2] Explain the difference between Level of Development and Level of Detail [3] Identify which Level of Information Need requirements are addressed by LOD [4] Outline how Level of Development supports the use of a model as a contract