Ringhammer Systems, C-10 Electrical Contractor in San Mateo, CA
Ringhammer Systems operating as a sole owner holds an active California contractor license (CSLB #912862), valid through Oct 31, 2027. First issued in 2008, the license has been on the CSLB roster for 18 years. It carries a single CSLB classification: C-10 — Electrical 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 San Mateo, in San Mateo County, California.
- License Number
- 912862
- Issued
- Mar 24, 2008
- Status
- CLEAR
- Expires
- Oct 31, 2027
- Entity
- Sole Owner
- Surety
- American Contractors Indemnity Company
- Bond Number
- 10148101
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Sep 15, 2025
- 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 Ringhammer Systems licensed in California?
Yes. Ringhammer Systems holds California Contractors State License Board license number 912862, which is active and in good standing. The license was first issued on March 24, 2008. It is valid through October 31, 2027.
What does Ringhammer Systems specialize in?
Ringhammer Systems is licensed for one CSLB classification: C-10 Electrical Contractor.
Where is Ringhammer Systems headquartered?
Ringhammer Systems is headquartered at 63 Bovet Road #357, San Mateo, CA 944023104, in San Mateo County, California.
Does Ringhammer Systems have an active surety bond on file with CSLB?
Yes. Ringhammer Systems has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Ringhammer Systems carry workers' compensation coverage?
Ringhammer Systems reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Ringhammer Systems's contractor license?
You can verify Ringhammer Systems's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=912862.
- License issuedMar 24, 2008
- Bond activeJan 1, 2023
- WC coverage startsSep 15, 2025
- License expiresOct 31, 2027
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