diamond certified company certificate

Companies must pass rigorous rating standards to earn Diamond Certified. Photo: American Ratings Corporation ©2018

Welcome Aboard!

We’re pleased to announce that the following companies have recently been awarded Diamond Certified. That means they’ve passed our rigorous 12-step ratings process and scored Highest in Quality and Helpful Expertise®.


A-Rod Auto Collision

(408) 622-0473


Services Performed: Auto Body Repairs, Dent Removal & Repair, Frame Straightening, Auto Painting & Detailing

Areas Served: Santa Clara County


Jim Gardner Construction Inc.

(510) 254-5887


Services Performed: Drainage Systems (French Drains, Downspouts & Site Drainage), Structural Repair Work, Foundation Repair & Replacement, Basement Digouts, Entry Stair & Porch Replacement & Repair, Earthquake/Seismic Retrofitting Repairs & Upgrades, Retaining Walls

Areas Served: Alameda County



(408) 758-5718


Services Performed: Attic Cleaning & Rubbish Removal, Animal Waste Removal, Crawl Space Cleaning, Insulation Removal & Replacement, Radiant Barrier Installation, Thermal Inspections

Areas Served: Greater Bay Area


What Customers Have to Say

We often hear from Bay Area consumers who are glad they chose a Diamond Certified company.

kitchen renovation

Customers are impressed by the conscientiousness of Thompson Construction, who recently remodeled this home. Photo: Thompson Construction ©2018

Helen Sylvia recently hired Thompson Construction for a home renovation project and wanted to let us know how pleased she was with her experience. She writes, “Thompson Construction did a very nice job and were very conscientious.”

Let us know if you’ve had a great experience with a Diamond Certified company. You can reach us at [email protected] or (415) 884-2700.

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