The BIM Acceleration Committee (BAC) is the driving force behind BIMinNZ. They are a nationwide alliance of industry and government, established in Feb 2014 to coordinate efforts to increase the use of BIM in New Zealand. The BAC say that there is no better way to understand the benefits of BIM then to see how it has impacted real projects in the country. This site includes a series of case studies demonstrating the costs, benefits and risk management benefits of using BIM.
There are 13 case studies currently outlined on the website covering a wide range of projects, including a wastewater treatment plant, a gym, residential flats, bespoke university buildings, etc.