BIM (Building Information Modeling)
Building Information Modeling (BIM) is a process and set of technologies for creating and managing digital representations of physical and functional characteristics of built assets. BIM models are intelligent 3D databases — each element carries structured data (dimensions, materials, costs, specifications, maintenance requirements) in addition to geometry. BIM is distinct from CAD: a CAD drawing describes geometry; a BIM model describes a building's elements and their relationships, enabling clash detection, quantity takeoff, lifecycle cost analysis, and operational data handover.
Why it matters
BIM has become the default delivery method for commercial and infrastructure construction in most developed markets. UK government projects mandate BIM Level 2 (ISO 19650). US federal projects increasingly require BIM. For private owners, BIM's primary value is the lifecycle data it enables: a well-executed BIM model delivered at project completion becomes the foundation for facility management, space planning, and operational digital twin programs that compound value over a 30-50 year asset lifecycle.
External References
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Cite this definition
Finocchiaro, Michael. “BIM (Building Information Modeling).” DemystifyingPLM PLM Glossary, 2026, https://www.demystifyingplm.com/glossary/bim-building-information-modeling