Since 1997, the Northwest Energy Efficiency Alliance (NEEA) has supported energy code activities in the Northwest states through the Codes and Standards Support Project, principally by funding staff positions or organizations responsible for code adoption and education. This second Market Progress Evaluation Report (MPER #2) documents the progress made toward key objectives of NEEA’s Codes and Standard Support Project from 2005 to 2007. This MPER also reviews the project’s challenges and provides recommendations for future project implementation.