Three Bay Area Companies Earn Diamond Certified Distinction

The American Ratings Corporation maintains this certification by surveying large, random samples of actual customers. To qualify, businesses must score 90 or higher on a 100-point scale, passing audits of state licenses, insurance coverage, and professional practices. Recipients also commit to adhering to the Diamond Certified Customer Satisfaction Principles and participate in mediation if disputes arise.

Greg Louie, CEO of the American Ratings Corporation, noted that the designation remains exclusive because most applicants fail to meet the required benchmarks. The newly certified firms serve diverse needs across the Greater Bay Area: Alcon Concrete specializes in residential and commercial masonry, Better Electric manages complex wiring and troubleshooting in San Joaquin, Alameda, and Contra Costa Counties, and Mr. Rooter Plumbing of Sonoma County offers 24/7 emergency repair and installation services.