December Builder of the Month
Central Oregon Building Company

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Multifamily Certification
A Suite of Services

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Earth Advantage is Working to Accelerate
the Adoption of Sustainable Buildings
Across the Northwest

Creating Change

We work to accelerate the availability of sustainable homes for everyone.

In the Northwest

Our work in the Northwest focuses on providing a recognized green building standard for single and multifamily homes. We use our rigorous standards in conjunction with other national standards such as Passive House and LEED® for Homes to certify single and multifamily residences in Oregon and Southwest Washington. In addition we provide training to building and real estate professionals across the region. In 2017 we co-founded the ZERO Coalition (Zero Energy Building Oregon) in support of advancing home building in our state by 2030.

Across the Country

Nationally we work with states, cities, and national organizations to advance residential building sustainability. We do this through training, data solutions, and policy consultation. The goal of our national work is to share our regional expertise to other regions in order to advance residential sustainability across the entire U.S. This work includes our City HELP™ initiative, the Green Building Registry®, and program delivery support for the DOEs Home Energy Score.

Home Certifications

Single family home certifications in Oregon and Southwest Washington.
Learn more about our certification standards, programs, and awards.

Multifamily Certification

We certify multifamily buildings in Portland, Eugene, Bend, and Vancouver, Washington.
Find out more about the certifications we offer, our experienced team and projects we've worked on.

Professional Training

We provide training for a wide range of building industry professionals.
Discover classess available now >>
Find an Earth Advantage accredited professional >>
Access our huge resources section for real estate professionals >>

ZERO Coalition

The Zero Energy Ready Oregon Coalition to promote the adoption of zero energy buildings in Oregon by 2030.
Learn more about our comittment to zero energy homes >>

Green Building Registry®

We created the Green Building Registry to serve as "the" data repository for verified green and energy efficiency home data.
Discover how the Green Building Registry works >>
Search for a home on the Registry >>

City HELP™

We joined the Rocky Mountain Institute to create the City HELP™ program to provide guidance to cities across the U.S. on energy labeling and manditory Home Energy Score program implementation.
Find out more about the program >>

Home Energy Score

We provide program support to the DOEs Home Energy Score program in Portland and across Oregon.
Visit the Portland program overview page >>
Find a Portland HES Assessor >>
Visit the Oregon program overview page >>
Find an Oregon HES Assessor >>

Policy & Research

Since 2007 we have provided research and policy guidance on residential building codes, home construction best practices, green home valuation, and more.
Learn about our research and read our publications >>

“Never doubt that a small group of thoughtful, committed citizens can change the world; indeed, it is the only thing that ever has.”
—Margaret Mead

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