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Published on December 30, 2013 | Last Updated on September 20, 2025
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The BIM Maturity Index (BIMMI) is a conceptual model depicting five distinct Maturity Levels:
|
Level |
Level Name | Textual Rating | Numerical Rating |
|
a |
Ad-hoc or initial | Low maturity | 0-19% |
|
b |
Defined | Medium-Low maturity | 20-39% |
|
c |
Managed | Medium maturity | 40-59% |
|
d |
Integrated | Medium-High maturity | 60-79% |
|
e |
Optimised | High maturity | 80-100% |
The progression from lower to higher levels of BIM Maturity indicates (i) better control through minimizing variations between targets and actual results, (ii) better predictability and forecasting by lowering variability in competency, performance and costs and (iii) greater effectiveness in reaching defined goals and setting new more ambitious ones. BIMMI apply to BIM Stages and BIM Steps at organizational or larger scales (e.g. Disciplines, Industries and Markets).
Update (July, 2015) – below is a short video explaining the above on the Framework’s YouTube channel:
Cite as: BIMe Initiative (2025), '10. BIM Maturity Index', https://bimexcellence.org/frameworks/bim-maturity-index/. First published 30 December 2013. Viewed 27 September 2025
Hello Doctor Succar, nice to greet you, excellent information and very detailed, when you talk about the “Numerical Rating” could explain based on what percentage values are assigned.
Thanks and regards Jose A Garci
Hello Jose, thank you for your question. The rating system – whether it uses an alphanumeric ranking, cumulative scoring, or percentages – can be designed to match the tool used to implement the index. For an example of such an implementation, please refer to the 301in BIM Maturity Matrix – here: https://bimexcellence.org/resources/300series/301in/