12 Stone Construction CO
12 Stone Construction CO operating as a sole owner is licensed in California under CSLB number 1019489. The license was first issued in 2016, putting the business at 10 years on the active CSLB roster. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with Philadelphia Indemnity Insurance Company and an exempt workers' compensation status (no employees on payroll). The business is based in San Bruno, in San Mateo County, California.
- License Number
- 1019489
- Issued
- Oct 18, 2016
- Status
- CLEAR
- Expires
- Oct 31, 2026
- Entity
- Sole Owner
- Surety
- Philadelphia Indemnity Insurance Company
- Bond Number
- PB10163405587
- Effective
- Nov 17, 2025
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Oct 15, 2024
- 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 12 Stone Construction CO licensed in California?
Yes. 12 Stone Construction CO holds California Contractors State License Board license number 1019489. The license was first issued on October 18, 2016. It is valid through October 31, 2026.
What does 12 Stone Construction CO specialize in?
12 Stone Construction CO is licensed for one CSLB classification: B General Building Contractor.
Where is 12 Stone Construction CO headquartered?
12 Stone Construction CO is headquartered at Po Box 1101, San Bruno, CA 94066, in San Mateo County, California.
Does 12 Stone Construction CO have an active surety bond on file with CSLB?
Yes. 12 Stone Construction CO has an active California contractor surety bond filed with Philadelphia Indemnity Insurance Company.
Does 12 Stone Construction CO carry workers' compensation coverage?
12 Stone Construction CO reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify 12 Stone Construction CO's contractor license?
You can verify 12 Stone Construction CO's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1019489.
- License issuedOct 18, 2016
- WC coverage startsOct 15, 2024
- Bond activeNov 17, 2025
- License expiresOct 31, 2026
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