Earth Advantage Partners with the GreenHome Institute to Provide Certification Data to the Green Building Registry

July 31, 2023

[Portland, OR July 2023] —Earth Advantage®, Inc. and the GreenHome Institute announced today a partnership to deliver GreenStar Homes certification data through the Green Building Registry® (GBR). This partnership will provide easy access to this Certification data to the market and help facilitate inclusion in real estate listings.

Historically, important home data such as energy ratings, third-party building certifications, or solar electricity generation has not been included in sale or rental listings. This lack of data transparency has prevented appraisers and lending institutions from creating a thorough valuation, resulting in the potential loss of thousands of dollars of value per home, and preventing buyers from making a fully informed purchasing decision. 

Since 2017, Earth Advantage’s self-funded, Green Building Registry has provided home performance data to the public and real estate multiple listing services. GBR partners with programs to provide verified data directly from sources such as the U.S. Department of Energy’s Home Energy Score program, LEED® for Homes, ENERGY STAR®, HERS® Index Scores, and other national and regional third-party verification programs. 

"The GreenStar Homes Certification program provides a clear pathway to upgrade all homes easily to increase sustainability, but without recognition and market comparison, it’s hard to find value. As someone who lives in a certified home and derives value from these efforts, it is important to ensure the expansion of an easy-to-understand and easy-to-find listing of green-certified homes. We are thrilled to collaborate with and promote the US Green Building Registry in this regard!" says Brett Little, Education Manager at the GreenHome Institute.

David Heslam, Executive Director at Earth Advantage states "The GreenStar Homes Certification has been utilized for over ten years. Earth Advantage is excited to help make these certified homes more visible to everyone in the market."

About the Green Building Registry
The Green Building Registry (GBR) is the largest single-source for building performance data in the United States. GBR contains over two and a half million records of data on single-family, multifamily, and commercial buildings. Additionally, the GBR API allows any MLS, lender, or other data consumer or provider to connect directly to the information contained in the registry. for a free property search. 

GBR is a wholly owned and self-funded initiative of Earth Advantage, a nonprofit organization headquartered in Portland, Oregon. Earth Advantage is helping the US housing industry to create a more informed and humane residential real estate market. For more information on Earth Advantage visit:

About the GreenHome Institute
The GreenHome Institute is a Grand Rapids, MI-based non-profit that works around the US with a mission to empower people to make healthier and more sustainable choices in the renovation and construction of the places we live.  GHI provides education, consulting, and certification services for residential green buildings, including our GreenStar Homes Certification Program, which offers free tools and resources to help anyone green up their new or existing residential project.

If you would like more information about this topic, please call Meg Garabrant at 503.310.9138 x162, or email