Available in Oregon, Washington, Idaho, Montana

Passive House Institute US, Inc. (PHIUS) is a non-profit 501(c)(3) organization committed to making high-performance passive building the mainstream market standard. The PHIUS+ Certification program is a leading passive building certification program in North America. It's the only passive building certification that combines a thorough passive house design verification protocol with a stringent Quality Assurance and Quality Control (QA/QC) program performed on site by highly skilled and specialized PHIUS+ Raters.

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Additional Programs

Every home has a story. Differentiate your homes and services by partnering with a home certification program.

Energy Performance Score

EPSTM, brought to you by Energy Trust of Oregon, is an energy performance score that rates the efficiency of a home and measures it against similar-sized homes in Oregon. With EPS, the lower the score the more efficient the home. The score can range from zero to over 200, with zero being the most efficient rating.

Environments for Living

The Environments For Living® program by TopBuild Home Services is a leading, national turn-key certification program designed to assist builders in constructing and marketing homes utilizing the principles of building science — homes that offer superior comfort, energy efficiency, indoor environmental quality, and durability benefits, including limited guarantees on comfort and heating and cooling energy use.

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