I wrote a blog post back in Oct 2012 about BIM ROI and LOE (Level Of Engagement). Two months later, I find this idea published in the latest McGrawHill Construction SmartMarket Report: The Business Value of BIM in North America 2012.
I didn't know that the SmartMarket team is reading my blog and would steal my idea!-;)
Looking at the report it is evident by their survey that BIM ROI is closely linked with Level Of Engagement from everyone in your company.
"This analysis demonstrates the powerful relationship between ROI and a company's level of BIM engagement, quantifying the rewards of greater BIM experience, skill and implementation levels."
Download full report from HERE