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Read about O2Haus in Green Building Advisor

posted Jul 8, 2013, 10:35 PM by Ella Wong   [ updated Jul 8, 2013, 10:37 PM ]
O2Haus, Portland's 1st speculative net-zero energy passive house project, is featured in Green Building Advisor news article- A Net-Zero Passivhas Duplex in PortlandKudos to Rob Hawthorne and Bart Bergquist of PDX Living for designing and building this great project!