Cornerstone Masonry Services Inc
Licensed concrete contractor, masonry contractor in Sun Valley, Los Angeles, California
CSLB licence active5.0(2 reviews)
Cornerstone Masonry Services Inc holds CSLB licence 817672, active, licensed since 27 Feb 2003, rated 5.0 from 2 Google reviews. Bonded for $25,000 with American Contractors Indemnity Company. Clean CSLB record, with no citations, complaints or legal actions disclosed.
Report card
- Licence activeCSLB #817672, class C-8, C29. Issued 27 Feb 2003, expires 31 Dec 2027.
- Licensed 24 yrsSince 27 Feb 2003.
- Bonded$25,000 with American Contractors Indemnity Company, since 1 Jan 2023. California requires the same $25,000 bond of every contractor.
- Workers' comp insuredZurich American Insurance Company, policy WC688485001, valid to 12 Mar 2027.
- Clean CSLB recordNo citations, complaints or legal actions disclosed.CSLB record
- On the BBB, not accreditedIts BBB rating, complaints and reviews are on its Better Business Bureau profile.BBB profile Complaints Reviews
Checked against the Contractors State License Board (CSLB) register on 4 Nov 2026.
About Cornerstone Masonry Services Inc
- People on the licence
- Penny Carolyn Zambrano (qualifier, CEO and president), Juan Pedro Hernandez (officer)
OSHA inspections
US Department of Labor enforcement data, matched by business name and city.
Why it ranks #17 of 261 concrete contractors in Los Angeles
Score 85.4 / 100. Claiming this listing or using Theo never changes it. How we rank
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