This report, informed by leading research and real-world examples, highlights practical online and in-person tactics that contractors can use to promote social interaction and social comparison among homeowners to make energy upgrades a "must-have" in U.S. homes.

This summary report provides scientific results, lessons learned, and recommendations for driving energy efficiency in existing buildings on an urban scale. It includes program marketing lesson learned, such as: personal outreach and call to action events are critical marketing opportunities.