A quality assurance program for trade contractors and builders is under development by the NAHB Research Center, with the support of the public-private PATH program administered by the U.S. Department of Housing and Urban Development (HUD), and other industry sponsors. A trade contractor certification program has been field tested and evaluated, and demonstrates substantial benefit to all participants. The pilot for the National Housing Quality (NHQ) Certified Trade Contractor program was conducted in Las Vegas and has been expanded to Raleigh, N.C., the Washington, D.C.-area, and the upper mid-west. Initial work on a builder quality assurance program is currently underway with program requirements and training approaches in the design stage. There has already been interest by a number of builders to participate in a pilot test of that NHQ Certified Builder program as it becomes available in their area. (Brief summaries of these programs are provided in Appendix A.)