Although limited by its restriction to the LEED rating system standard, the latest Green Building Market & Impact Report 2009 by Rob Watson is a useful snapshot of current status and projections for the green construction industry. USGBC's Green Jobs Study , prepared by Booz Allen Hamilton , evaluates the economic impact of green buildings in terms of the "total number of direct, indirect, and induced jobs created from green building expenditures." GBCI currently has over 20,156 LEED registered projects totaling 322 million square feet, and that's great news for improving our industry's impact on the environment. As champions of green building, we'd welcome a total green square footage estimate that takes LEED, Green Globes, and other local Green ratings systems into account. Although not a comprehensive solution, we still see the investment in LEED certification as being valuable for long-term value and as a road map to green performance outcome...