Herzfeld Martin, C-7 Low Voltage Systems Contractor in El Sobrante, CA
Herzfeld Martin operating as a sole owner holds an active California contractor license (CSLB #833782), valid through Mar 31, 2028. First issued in 2004, the license has been on the CSLB roster for 22 years. It carries 5 CSLB classifications: C-7 Low Voltage Systems Contractor, C-10 Electrical Contractor, C-46 Solar Contractor, C-61/D-31 Pole Installation and Maintenance Contractor, and C-61/D-56 Trenching Only Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and an exempt workers' compensation status (no employees on payroll). The business is based in El Sobrante, in Contra Costa County, California.
- License Number
- 833782
- Issued
- Mar 11, 2004
- Status
- CLEAR
- Expires
- Mar 31, 2028
- Entity
- Sole Owner
- Surety
- American Contractors Indemnity Company
- Bond Number
- 100901999
- Effective
- Dec 30, 2024
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Feb 2, 2026
- Expires
- —
This contractor warrants a closer look before contracting:
- Workers' comp listed as exempt
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Herzfeld Martin licensed in California?
Yes. Herzfeld Martin holds California Contractors State License Board license number 833782, which is active and in good standing. The license was first issued on March 11, 2004. It is valid through March 31, 2028.
What does Herzfeld Martin specialize in?
Herzfeld Martin is licensed for 5 CSLB classifications: C-7 Low Voltage Systems Contractor, C-10 Electrical Contractor, C-46 Solar Contractor, C-61/D-31 Pole Installation and Maintenance Contractor, and C-61/D-56 Trenching Only Contractor.
Where is Herzfeld Martin headquartered?
Herzfeld Martin is headquartered at 6131 Hillside Dr, El Sobrante, CA 94803, in Contra Costa County, California.
Does Herzfeld Martin have an active surety bond on file with CSLB?
Yes. Herzfeld Martin has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Herzfeld Martin carry workers' compensation coverage?
Herzfeld Martin reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Herzfeld Martin's contractor license?
You can verify Herzfeld Martin's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=833782.
- License issuedMar 11, 2004
- Bond activeDec 30, 2024
- WC coverage startsFeb 2, 2026
- License expiresMar 31, 2028
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