After a year of beta testing, LEED v4 is out. What caused the delay? Some changes hardly seem controversial, like the new market sectors that allow for a wider selection of building types for existing schools and retail, data centers, warehouses and distribution centers, hospitality, and mid-rise residential projects.
According to Beth Heider, "USGBC – when I was chair – realized through discussions with stakeholders that those groups didn’t feel the market was ready for as much change as LEED v4 contains. Part of the reason was the building market was – and still is – somewhat soft.”
A closer look at impact categories and the dynamic plaque help explain USGBC’s hesitancy. As a systematic reevaluation of its efficacy and intent, USGBC asked itself, “What should a LEED project accomplish?” rather than focusing on environmental problems and how they can be reduced.
LEED v4’s new Impact categories serve both as an answer to that question and as a direct response to critics’ claims that LEED enables “greenwashing.” As Beth Heider explained, "...while LEED 2009 weighted points to encourage projects to do less harm, LEED v4 is aspirational in weighting and developing credits to encourage projects to do more good." The Impact categories reflect this aspirational shift by creating stronger ties between LEED v4 credits and their performance outcomes.