Sean earned his Bachelor’s Degree in Architecture at the University of Oregon, and a Masters in Historic Preservation at the University of Pennsylvania. Early in his career he worked as a Research Associate with Heschong Mahone Group performing building energy analysis and developing custom analysis tools, and doing background research and analysis for development of California Codes and Standards and other public policy initiatives. Prior to joining NBI in 2009, he worked for several years with an historic preservation consulting and development firm founded to rehabilitate historic residential properties with a special emphasis on energy efficiency upgrades that are effective and sensitive to the significant aspects of historic buildings. His work at NBI focuses on energy-related issues in building codes and policies, the technical development of energy efficient strategies for commercial and multifamily buildings, and a broad array of issues related to energy efficiency. In all of these areas, he has a particular focus on the issues of existing buildings.