John Williams Underground Sewer, A General Engineering Contractor in Stockton, CA
John Williams Underground Sewer operating as a corporation holds an active California contractor license (CSLB #1060903), valid through Dec 31, 2027. First issued in 2019, the license has been on the CSLB roster for 7 years. It carries 2 CSLB classifications: A General Engineering Contractor and C-42 Sanitation System Contractor. Records show an active surety bond on file with Allegheny Casualty Company and an exempt workers' compensation status (no employees on payroll). The business is based in Stockton, in San Joaquin County, California.
- License Number
- 1060903
- Issued
- Dec 2, 2019
- Status
- CLEAR
- Expires
- Dec 31, 2027
- Entity
- Corporation
- Surety
- Allegheny Casualty Company
- Bond Number
- ACC006007153
- Effective
- Mar 24, 2026
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Feb 10, 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 John Williams Underground Sewer licensed in California?
Yes. John Williams Underground Sewer holds California Contractors State License Board license number 1060903, which is active and in good standing. The license was first issued on December 2, 2019. It is valid through December 31, 2027.
What does John Williams Underground Sewer specialize in?
John Williams Underground Sewer is licensed for 2 CSLB classifications: A General Engineering Contractor and C-42 Sanitation System Contractor.
Where is John Williams Underground Sewer headquartered?
John Williams Underground Sewer is headquartered at 8001 North Stephens Road, Stockton, CA 95215, in San Joaquin County, California.
Does John Williams Underground Sewer have an active surety bond on file with CSLB?
Yes. John Williams Underground Sewer has an active California contractor surety bond filed with Allegheny Casualty Company.
Does John Williams Underground Sewer carry workers' compensation coverage?
John Williams Underground Sewer reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify John Williams Underground Sewer's contractor license?
You can verify John Williams Underground Sewer's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1060903.
- License issuedDec 2, 2019
- WC coverage startsFeb 10, 2026
- Bond activeMar 24, 2026
- License expiresDec 31, 2027
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