LOD Spec Survey
The BIMForum seeks your participation in developing and improving the Level of Development Specification (LOD Spec).
The LOD Spec has enjoyed tremendous success over the last 10 years. The document was developed by practitioners who saw a need to specify, articulate and communicate model content requirements and qualities with clarity and efficiency. Today, the document is widely used on all continents on large and small projects. Practitioners of all disciplines and trades are able to work with the document.
We don’t want to stop here. Recognizing advancements in BIM, design and construction process, market penetration of BIM and changing technological and business environments we want to ensure the LOD Spec stays relevant and provides the greatest possible value to its users.
The BIMForum has collaborated with the Level of Information Needs (LOIN) working group to survey the use and application of the LOD Spec. The results of our survey will directly influence developments and the direction of the document.
Please participate in our survey here: https://form.jotform.com/221423162652043
What's new at BIMForum See more
2025 LOD Specification in Spanish
Friday, February 13, 2026
The LOD Specification 2025 is now available in Spanish, expanding access to one of the industry’s most widely used BIM references for defining model content and reliability at different project …
Official Release: 2025 LOD Specification
Wednesday, December 31, 2025
The 2025 LOD Specification is now available from BIMForum. This release continues to provide a structured, consistent framework for defining model expectations and improving collaboration across the built environment.
2025 LOD Specification Public Comment Period Now Open
Friday, December 19, 2025
The draft 2025 LOD Specification has been released for public comment. Industry stakeholders are invited to review the proposed updates and provide feedback to help shape the final release. Public …