Quality Builder Warranty is backed by Liberty Mutual, making it the only 10-year warranty with nationally licensed insurance backing. As one of the largest insurance companies in the United States, you can purchase your home with satisfaction that your investment is covered by an institution that Americans have trusted for over 100 years. Every home covered by Quality Builder Warranty was completed by a builder that has adhered to rigorous standards. This ensures the Homebuyer is getting the best product possible. After all, great homes require great builders.