HERS® Ratings of modular and manufactured home presents a separate set of challenges for quality assurance oversight. To address this challenge the RESNET Standards Development Committee 900 – Quality Assurance (SDC 900) has formied a Modular and Manufactured Housing Rating Quality Assurance Standard Working Group. The working group will develop a standard amendment that will be considered by the SDC 900 to be submitted to the RESNET standard amendment public review and comment process. RESNET conducted a national recruitment effort for volunteers to serve on the working group. This included to 7,000 plus members of RESNET’s direct e-mail distribution network and posting on RESNET’s social media. The following are the individuals that have been appointed to serve on the working group: Thomas R Arnold, President, TRA Certification International Craig Craft, Senior Associate, T.R. Arnold Associates Charlie Haack. Senior Associate, ICF International Rick Hanger, Program Manager, Housing Technology and Standards Section, Colorado Division of Housing Michael Lubliner, Residential Technical Lead, Washington State University Brady Peeks, Northwest Energy Works, Inc. Roy Robin, Director of Building Efficiency and Clean Energy Strategy, Natural Resources Defense Council Brian Stanfill, Manager, New Construction Services, MaGrann Associates Frederick “Rick” G. Terry III, Owner, Eco-Haven Building Systems Bill Towson, Construction Codes and Industrialized Buildings Program, Georgia Department of Community Affairs Li Ling Young, Senior Energy Consultant, Vermont Energy Investment Corporation