You already know you can use diamondcertified.org and the quarterly Diamond Certified Directory to find all types of service companies that have been independently rated Highest in Quality…but do you know how a company becomes Diamond Certified in the first place? Here’s a breakdown of our 12-step certification process and what it means for you, the consumer.
The company must apply to begin the rating process.
A random sample of typically 400 past customers is collected from all customer files of the applicant company. Read more