The 2011 Green Building Opportunity Index remains the first office market assessment tool to provide weighted comparisons of top U.S. office markets on the basis of both real estate fundamentals and green investment considerations. As in the inaugural 2010 version, the Index compares each market’s relative position to its peers in six categories: Office Market Conditions, Investment Outlook, Green Adoption & Implementation, Mandates & Incentives, State Energy Initiatives and Green Culture. For 2011, the Index has been enhanced by adding five new markets and refining the methodology and data inputs – yielding a more comprehensive view into the factors that influence successful development, retro-fitting, leasing and sales of investment grade green office buildings.