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We make you an expert at choosing local companies!

Find Diamond Certified companies rated Highest in Quality and Helpful Expertise. Performance Guaranteed.

NEW! Use our DiamondCertifiedGraphic FIND A QUALITY COMPANY WIZARD to expertly choose a quality company.

Diamond Certified Resource is your guide to quality local companies and expert advice.


Join us or UPGRADE your Diamond Certified Preferred Membership (ALWAYS FREE)

Why Choose a Diamond Certified Company?

Watch this video on the Diamond Certified Resource: the best way to find local companies rated Highest in Quality and Helpful Expertise®. Companies must score 90+ on a 100 scale and pass all our credential-based ratings. By requiring such a high score to qualify, we cut out mediocre and poorly performing companies.

We’ve all felt the joy of choosing a good local company and, unfortunately, the pain when we mistakenly choose a bad one. The problem is, every company claims to be good, yet despite these glowing claims some provide inconsistent quality while others are downright unscrupulous.

The Diamond Certified Difference

We’ve solved this problem for you with the Diamond Certified Resource. Only local companies independently rated Highest in Quality and Helpful Expertise® earn Diamond Certified. Our rigorous rating and certification process starts with the in-depth pass/fail rating of each company’s customer satisfaction, license and insurances. Most companies can’t pass our rating and earn Diamond Certified, and every Diamond Certified company must continue to deliver on its promises to you, the consumer. That’s why we conduct ongoing customer satisfaction research and credential-based ratings and monitor each company’s performance. Read More

Find Top Rated Companies in the San Francisco Bay Area

If you really care about choosing a quality local company, we’re here for you. Here’s your access to the best local companies serving the San Francisco Bay Area. For 22 years we’ve conducted the most accurate ratings and deepest research of local companies, so you’ll be confident in choosing.

Diamond Certified Resource Blog

Take a look at some recent TV spots that announce the arrival of the 2024 Diamond Certified Directory and explain how to use Diamond Certified Resource to find quality local companies.

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Tips From Top Rated Experts

toprated expert
Adam Garza
San Jose Plumbing, Inc.
Plumbing Pride
toprated expert
Amie Prendergast
Precision Door Services of the Bay Area
Relational Rewards
toprated expert
Cindy Faulkner
Valley Heating, Cooling, Electrical and Solar
A Natural Transition
toprated expert
Dane Marcy
Service Manager
Kelly's Appliance Center
Mechanically Motivated

We Make You an Expert at Choosing Local Companies

top rated company

Find Local, Top
Rated Companies

Discover the highest rated companies in your local area, regardless of your service needs. All Diamond Certified companies are backed by a Performance Guarantee. Search for companies by location or industry category.

use guide resources

Use Our Guides, Resources & Blog

Access our homeowner guides, resources and blog for a deep dive into everything you need to know about before, during, and after the job. Read this before you even start looking for a company to handle your service needs.

rating certification process

Our Rating & Certification Process

We take pride in our 12-step certification process, which ensures that every Diamond Certified company is rated Highest in Quality and Helpful Expertise.

preferred member

Become a Diamond Certified Preferred Member

With our ALWAYS FREE preferred membership, you'll gain benefits that help you become an expert at choosing local companies for all your service needs. Plus, you'll have access to our 24/7 hotline any time you need support or guidance.