Commercial real estate investors in Australia will finally be able to measure the performance of sustainable commercial real estate buildings, following the launch of a new green property index.

Property investment analyst IPD has launched its green property index at Green Cities 2011. It is designed to track the investment performance of USD 36 billion worth of commercial office buildings which have been rated with Green Star, NABERS Energy and NABERS Water, eco-business.com reports.

The index will give individuals the chance to measure the effect of the energy ratings on performance. Anthony De Francesco, the managing director of IPD in Australia, said that he expects there to be a clear correlation between property assets with the energy ratings and strong investment performance.

Dr De Francesco said that as a whole, the pool of rated NABERS Energy assets outperformed the unrated assets.

Interestingly, the four star to five star rated properties outperformed the non-rated assets while the half-star to three-and-a-half star rated properties underperformed the non-rated assets, he added.