Next June, members of the U.S. Green Building Council will be voting on changes to the LEED green building standard. “The bar is getting raised,” said Navad Malin of BuildingGreen, a consulting and publishing firm, in an article in USA Today. Under the proposed guidelines, builders would have to project energy and water use for five years as part of the certification process. However, if the occupants aren’t as green as the builders anticipated, the buildings will not lose their certification.

The new rules will include higher energy standards, award points for avoiding potentially hazardous materials, and even determine what kind of plumbing items can be used.