Sustainable Strategies Abound in this Case Study House

Posted by Green Builder Staff

Feb 3, 2016 5:32:39 PM

A house in Bellingham, Washington, demonstrates innovative water and energy systems that meet the standards of the Living Building Challenge.

THE BIRCH CASE STUDY HOUSE was developed using the Living Building Challenge as a guide. The primary goal of this project was to implement numerous sustainable strategies, highlighting the successes and failures when designing, permitting and constructing Living Buildings.

To help realize the project, [bundle] design studio partnered with non-profits and building product manufacturers. Throughout construction, [bundle] hosted a workshop series with Sustainable Connections to present green materials and strategies to the local building community. [bundle] also partnered with Northwest Energy Efficiency Alliance (NEEA) for the NextStep Homes program and with WSU to field test a CO2 heat pump that is used for domestic hot water and radiant floor heating.


NAME: Birch Case Study House, Bellingham, WA
BUILDER: Chris Tretwold, Tretwold Construction, LLC
ARCHITECT/DESIGNER: Dan Welch, [bundle] design studio
PHOTOS: [bundle] design studio

The Birch Case Study house has proved successful at demonstrating a number of pathways towards Living Buildings. Among the highlights, it is the first within the Bellingham city limits to choose not to hook up city water and sewer. Instead, the project achieves net-zero water usage through the use of onsite rainwater catchment, composting toilets and graywater reuse.

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Posted by Christina B. Farnsworth

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Photos by Darren S Higgins, DH Photography

ALAN ABRAMS HAS been building green for decades, starting with a modest adobe he built by hand in New Mexico. The motto of his Maryland-based company, Abrams Design Build, is “sustainable design for intentional living.”

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