Green building is facing a number of changes, according to “The Godfather of Green,” Jerry Yudelson. A LEED fellow and former president of the Green Globes rating system, Yudelson has recently written a book, Reinventing Green Building, in which he identifies 10 "megatrends" he believes will impact certification systems, markets, government rules, and green building technologies through 2020 and beyond.

Those megatrends are as follows: The growth rate of green building certification is slowing down “Fundamentally, there is zero growth for certification in the US since 2011, including through 2015,” Yudelson said. “For existing buildings, the current certification rate for existing buildings is 0.05 per cent (that’s not a typo!)…