About Diamond Certified Resource
Our dedicated team has decades of experience rating and certifying local companies on behalf of consumers. Only companies that score Highest in Quality and Helpful Expertise® in rigorous surveys of verified real customers earn the prestigious Diamond Certified award. Only the Best Pass the Test®. Above, our team celebrates the milestone of 10 million Diamond Certified Directories published and mailed to consumers throughout the Greater Bay Area. Photo: American Ratings Corporation, 2017
Our mission is to define excellence and identify for consumers the highest quality local companies. Our founders pioneered rating local companies based on customer satisfaction in 1990, back before the web existed. Our home, like yours, is the Greater Bay Area and our entire team is dedicated to ensuring you have confidence in the companies you choose. We are committed to performing all ratings and ongoing certification work with the highest integrity and accuracy.
Who We Are and What We Believe
- You the consumer have the right to know which companies are truly performing at the highest level of quality.
- The highest quality companies should be rewarded for their ongoing performance through public recognition.
- Companies should be held accountable for their performance, one customer at a time.
The History of Diamond Certified Resource
American Ratings Corporation (ARC) has been serving the Greater Bay Area consumer community since 2001, but our underlying ethos and methodology were conceived much earlier. It all started when co-founder Jim Stein published Northern California’s first multi-language Yellow Pages in 1983. Following the book’s release, Jim began to study how consumers used information to find local companies. He found that while a phone book was useful for connecting consumers and companies, it offered no way of verifying whether a company actually provided the quality service and customer satisfaction it claimed to. Jim realized if he could find a way to help consumers accurately differentiate quality among local companies, it could revolutionize the marketplace. Read More
Diamond Certified Resource Celebrates 20 Years!
Back in 2001, right here in the Bay Area, we started rating local companies on quality. A decade ago, we added our always-free Diamond Certified Preferred membership with its hotline, double guarantee and subscription to our directories. Today, we’re thrilled to serve you and our 190,000 Diamond Certified Preferred members.Celebrate With Us