The growing market for green design can be seen in the results of Engineering News Record's Top 100 Green Contractors list, lead by The Turner Corp. and Clark Group.
The Top 100 generated $44.99 billion in 2013 contracting revenue from projects registered with and actively seeking certification from third-party ratings groups under objective sustainable-design standards, such as the U.S. Green Building Council's Leadership in Energy and Environmental Design (LEED) standards. For the group, this revenue is an 11.9% increase, from $44.67 billion in 2012.