Built Green® of King and Snohomish Counties offers certifications for single-family, multi-family, remodel, refit, and community projects. Certification levels of 3-, 4-, and 5-Star are possible. The program also offers education and marketing support for its members. In addition, staff works closely with local governments to maintain and create municipal and utility incentives to reward green building.
The Passive House Institute (PHI) is an independent research institute, offering Passive House Classic, Plus, and Premium certifications.