PH projects underway in the U.S. and Canada in the first half of 2010
In April 2007, the Passive House Institute United States (PHIUS) was founded to promote the development of PH knowledge and construction. PH projects are underway in several states and Canada. More than 10 certified PHs have been constructed across the United States and approximately 20 more are in the pre-certification phase (see “Breaking Ground with a PH” in this issue).
Although most PH construction is for new buildings, three pioneering retrofit projects have been completed. Two almost meet the PH standards: one in Berkeley, California, and one in Portland, Oregon; and one is fully certified as a PH in Sonoma County, California.