This document presents a final report on greening development codes in Washington County. It finds that buildings account for a large portion of energy use, emissions, and waste. Adopting sustainable practices in building location, design, construction, and operation can significantly reduce economic and environmental impacts. However, energy efficient and renewable energy features still face regulatory barriers. The report evaluates these barriers and proposes strategies to address them through code revisions, education, and other approaches. It concludes with a matrix outlining next steps to encourage sustainable land use and building practices.