diamond certified company certificate

Companies must pass rigorous rating standards to earn Diamond Certified. Photo: American Ratings Corporation ©2019

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 rating process and scored Highest in Quality and Helpful Expertise®.


InVision Home Theater

Services Performed: Home Theaters, Home Automation, Lighting & Shade Automation, Home Networks, Video Surveillance, Indoor & Outdoor Audio/Video Systems, Access Control

Area Served: Contra Costa and Alameda Counties


Electrical Heroes Inc.

(510) 344-7015


Services Performed: Electrical Repairs & Installations, Home Wiring & Grounding, Indoor & Outdoor Lighting, Cam Light & Energy Light Installations, Outlet & Switch Installations, Home Consultations, Panel Replacements & Upgrades, Electric Vehicle Charging Stations

Areas Served: Alameda, Contra Costa and San Francisco Counties


Concord Carpet and Hardwood

Services Performed: Carpet; Luxury Vinyl Tile, Laminate & Hardwood Flooring; Flooring Installation; In-Home Consultations; Hardwood Finishing & Restoration

Areas Served: Contra Costa County


BV Electric Inc.

(415) 868-4970


Services Performed: Electrical Installations & Rewiring for Construction Projects; Wiring & Breaker Panel Upgrades; Circuit Breaker Replacement; Indoor Lighting, Outlets & Switches; Landscape Lighting & Motion Sensors; Electric Vehicle Charging Stations; Whole Home Surge Protection

Areas Served: San Francisco, Alameda and San Mateo Counties


See Through Glass & Door

Services Performed: Shower Door Installation, Replacement & Repair; Glass Repair & Replacement; Window Installation & Repair; Skylights

Areas Served: Sonoma and Napa Counties


Robertson Renovations

(925) 276-5605


Services Performed: Kitchen & Bathroom Design & Remodeling; Color Consultation; Room Additions; Garage Remodels; Decks, Patios & Outdoor Structures

Areas Served: Contra Costa and Alameda Counties


Another Reason to Choose Diamond Certified Companies

Past customers have said great things about General Plumbing and Rooter. Photo: General Plumbing and Rooter ©2019

We recently heard from a consumer in Alameda about their positive experience with a Diamond Certified plumbing company. “General Plumbing and Rooter out of Antioch is great,” says D.D. “Those guys really came through for me.”

If you’ve had an exceptional experience with a Diamond Certified company, let us know about it! You can reach us at [email protected] or (415) 884-2700.

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