You are not alone ! The International Passive House Association (iPHA) is the international umbrella organization for Passive House. Passive House California (PHCA) is a proud iPHA member since 2012. All iPHA affiliates are independent, member driven organisations. An affiliate organization does not exclusively represent a geographic region and multiple affiliate organizations can be, and are, active to promote the Passive House Standard in the same country. Click here to meet the other Passive House Organization websites.