ISO 7817-1

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ISO 7817-1:2024 - Building information modelling — Level of information need — Part 1: Concepts and principles.

ISO 7817-1 is an international standard that defines the concepts and principles for specifying the "Level of Information Need" when using Building Information Modelling (BIM), essentially outlining how much detail and what type of information should be exchanged between project stakeholders at different stages of a building's life cycle, from design to construction and operation, to ensure efficient collaboration and avoid unnecessary data overload; it provides a common framework for defining information requirements across the entire project lifecycle.