Capturing the energy savings potential of existing homes has proven quite challenging. Innovative new programs address the challenge with new models that adopt promising solutions to many home performance problems. Key to these efforts is attracting and educating forward thinking contractors seeking new business models that improve sales closure rates, increase average job size, and enhance the services offered to customers. This report describes some current and recent retrofit programs; discusses the successes, challenges, and lessons learned to date; presents promising new tools, resources, and program strategies; and identifies areas for further research and inquiry.