What Is Diamond Certified?
Diamond Certified is an independent California consumer research organization. They survey real past customers — not employees or paid reviewers — and only award certification to contractors scoring highest in quality, service, and integrity.
Real past customers are surveyed directly — not through us. Scores reflect actual project outcomes, not marketing spend.
Fewer than 5% of California contractors qualify. The rating is re-evaluated annually — you can’t buy it or coast on past performance.
Diamond Certified provides dispute resolution support. You have an independent third party if any issue arises — not just the contractor.
The most certified exterior contractor in the Bay Area.
Diamond Certified is the only certification based entirely on what past customers say about us. Every other certification was earned through rigorous training, testing, and ongoing quality standards.
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