From Green Building via Green Key Real Estate:
Several studies affirmed the appeal of smart green buildings and their benefits. Among the more widely hailed was McGraw-Hill Construction’s report in November saying that the potential for continued growth in the green building market is huge. The study projected a possible tripling in the value of eco-friendly construction starts to reach as much as $140 billion in the next five years.
–Greener Buildings Top Stories 2008 [Greener Buildings]