How It Works

Our rigorous 12-step company certification process is the most reliable anywhere. We survey a large, random sample of REAL customers by telephone to get the most accurate rating and verify that only actual customers are responding. By surveying from a company’s entire customer base, we ensure the results of our study, good or bad, truly represent the company’s customer satisfaction level. All responses for each Diamond Certified company are displayed on its Diamond Certified Company Report page.

Each respondent is identified by first name and last initial to protect their privacy. If a response is overtly negative or a respondent’s first name is easily identifiable because of uniqueness (either due to its rare use in American society or because of small respondent sample sizes), the name will be altered using a strict formula. This is to protect the anonymity of the respondent while including their feedback for other consumers to review.

Companies must score Highest in Quality and Helpful Expertise® (a 90+ on a 100 scale) and pass all our credential-based ratings to earn Diamond Certified. By requiring such a high score to qualify, we cut out mediocre and poorly performing companies. We then conduct ongoing research and ratings to ensure all companies maintain their high performances.

Criminal Background Checks Are Not Conducted: The rating steps that we conduct are described on this page. We do not conduct criminal background checks. If this is important to you when choosing your next service provider, do not hesitate to ask the company representative whether the employees who will be working in your home have passed criminal background checks and if any additional measures will be undertaken to protect your family and your property while work is in process. If you have children, you may also want to review the Megan’s Law website. We hope this information has provided you with an added measure of decision-making power.