The U.S. National Association of Homebuilders (NAHB) reports that usage of the National Green Building Standard (NGBS) grew from 2011 to 2013. Among builders of single-family homes, the number using the NGBS grew from 21 per cent to 30 per cent.

Among builders who focus on green construction, which means more than 30 per cent of their work is green construction, nearly 50 per cent use the NGBS. LEED, in comparison, was used by 13 per cent of single-family builders. The survey was conducted by McGraw Hill Construction’s data and analytics…