National Green Building Standard


Available in Oregon, Washington, Idaho, Montana

NGBS Green certification, based on the National Green Building Standard™ ICC/ASHRAE – 700, goes well beyond saying a home is energy efficient; it provides independent, third-party verification that a home, apartment building, or land development is designed and built to achieve high performance in six key areas: Site Design, Resource Efficiency, Water Efficiency, Energy Efficiency, Indoor Environmental Quality, and Building Operation & Maintenance. A new or renovated green home or multifamily building can be awarded a Bronze, Silver, Gold, or Emerald certification level, depending on the number of green practices successfully incorporated in its design and construction.

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Additional Programs

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

Living Building Challenge

The Living Building Challenge (LBC) is a building certification program, advocacy tool and philosophy that defines the most advanced measure of sustainability in the built environment.

Passive House Standard

The Passive House Institute (PHI) is an independent research institute, offering Passive House Classic, Plus, and Premium certifications.

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