Highest in Quality and Helpful Expertise
The Diamond Certified Difference
Certifying Local Companies for 20 Years.
Only Real Customers are Surveyed.
The Rating of Quality & Helpful Expertise.
Deep Company Info
These 12 Rating Steps Must be Aced to Earn Diamond Certified
Step 1: Apply
The company must apply to begin the rating process.
Step 2: Sample
A random sample of typically 400 past customers is collected from all customer files of the applicant company.
Step 3: Survey
Only real customers are surveyed in confidential telephone research to determine the company's customer satisfaction score based on quality.
Step 4: Score
To qualify, the company must score Highest in Quality and Helpful Expertise, with a score of 90 or above on a 100 scale.
Step 5: Credentials
We confirm that the company has required insurances and valid state-mandated credentials.
Step 6: Practices
The company must perform to contract, have customer-friendly business practices and stand behind its work.
Step 7: Commitment
The company agrees to adhere to the Diamond Certified Customer Satisfaction Principles.
Step 8: Award
If the company's quality rating, business practices and credentials meet our high standards, it is awarded Diamond Certified.
Step 9: Monitor
We conduct ongoing surveys to ensure the company is maintaining high customer satisfaction and loyalty.
Step 10: Mediate
The company agrees to participate in Diamond Certified mediation if necessary.
Step 11: Guarantee
The Diamond Certified Performance Guarantee provides added assurance of the company's commitment to customer satisfaction.
Step 12: Quality
Companies that are able to qualify for and maintain their Diamond Certified awards are much more likely to deliver quality to their customers.
How Diamond Certified Compares to Review Sites
Most Review Sites
Why You'll Feel Confident in Choosing a Diamond Certified Company
The Meaning of the Diamond Certified Symbol
Like the Yin and Yang symbol, this image depicts the principle of perfectly balanced forces. One side is the customer desiring the highest quality. The other side is the Diamond Certified company prepared to deliver on all its promises.
Performance Guarantee
A dispute may arise from an unmet expectation or a simple misunderstanding. Many disagreements are resolved after the parties work with each other using the contract and industry standards for guidance.
What is Helpful Expertise and Why Does it Matter So Much?
Nowadays, there’s so much information pouring forth from the internet that you probably feel like you should know more about certain subjects that impact your life. So, before you hire a local company, you want to feel that they have the expertise to help you understand the topic at hand and give you confidence in how they actually perform the work. That is the meaning of Helpful Expertise.Our Preliminary Rating Steps
In order to be featured as a top rated service provider on this website, each company must complete the following five steps:- Meet or exceed a ONE AllRatings star score of 4.5
- Have an active business license and be in good standing with the CSLB (when required)
- Pass an internet background search
- Have a satisfactory complaint status with the Better Business Bureau
- Have all four previous steps verified by a research specialist...
Sections in Our Ratings
- The Diamond Certified Difference
- 12 Rating Steps for Diamond Certified
- How Diamond Certified Compares to Review Sites
- Why You'll Feel Confident in Choosing a Diamond Certified Company
- Frequently Asked Questions
Complete Company Reports
Deeply researched company reports. Essential articles, video profiles, key factors and more.
Become a Preferred Member
With our ALWAYS FREE preferred membership, you’ll gain benefits that enable you to become an expert in choosing local companies for all your service needs. Plus, you’ll have access to our 24/7 hotline anytime you need support, guidance or simply have a question.