What Are the Differences Between LEED V3 and LEED V4?

As the standard in green building best practices, the U.S. Green Building Council’s (USGBC) Leadership in Energy and Environmental Design (LEED) system is the world’s preeminent green building rating program, with 1.5 million square feet of building space certified to LEED every day. LEED version 3, also known as LEED 2009, is now up for revision as USGBC members cooperate to vote on its next iteration, LEED v4.