The BIMForum 2025 Level of Development Specification (LOD Specification) is a reference tool that improves communication in teams using Building Information Models (BIMs). The 2025 version introduces a new Level of Development – LOD 250.
The Level of Acceptance (LOA) Specification is a reference tool intended to improve communication and element documentation in Reality Capture.
This guide was developed the with insights from over a hundred case study projects conducted by Ascend Building Knowledge Foundation (AscendBKF) beginning in 2017 with analysis complemented by its forums of BIMForum Global and VDCForum beginning in 2023. The challenges, issues, and solutions related to coordinates and coordinate systems have been summarized in this guide.
The BIMForum 2024 LOD Specification is a reference tool that aids in
improving the quality of communication among Project Owners and their teams using Building
Information Models (BIMs) on their projects. It achieves this by clarifying the 5 key characteristics of
defining Model Elements (MEs)
The BIMForum Global 2023 LOD Specification is a reference tool that aids in
improving the quality of communication among Project Owners and their teams using Building
Information Models (BIMs) on their projects. It achieves this by clarifying the 5 key characteristics of
defining Model Elements (MEs).
The first graphical LOD specification of its kind, LOD 2022 was produced
in multiple languages with input from international BIMForums outside the US and other similarly
aligned BIM groups.
This specification was produced by AGC-BIM Forum, founded from 2005 to 2019.
The Level of Development (LOD) Specification is a reference enabling AEC professionals to specify with a high degree of clarity the reliability of Building Information Models (BIMs) at various stages.
This specification was produced by AGC-BIM Forum, founded from 2005 to 2019.
The Level of Development (LOD) Specification is a reference enabling AEC professionals to specify with a high degree of clarity the reliability of Building Information Models (BIMs) at various stages.
This specification was produced by AGC-BIM Forum, founded from 2005 to 2019.
The Level of Development (LOD) Specification is a reference enabling AEC professionals to specify with a high degree of clarity the reliability of Building Information Models (BIMs) at various stages.