Advanced Underground Systems, A General Engineering Contractor in Riverside, CA
Advanced Underground Systems operating as a sole owner holds California contractor license #879314, which is currently expired (lapsed Jun 30, 2026) and not valid to contract until it is renewed. First issued in 2006, the license has been on the CSLB roster for 20 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 Philadelphia Indemnity Insurance Company and an exempt workers' compensation status (no employees on payroll). The business is based in Riverside, in Riverside County, California.
- License Number
- 879314
- Issued
- Jun 13, 2006
- Status
- CLEAR
- Expires
- Jun 30, 2026
- Entity
- Sole Owner
- Surety
- Philadelphia Indemnity Insurance Company
- Bond Number
- PB10163408001
- Effective
- Jan 31, 2026
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Jul 31, 2025
- Expires
- —
This contractor has a compliance issue in its public CSLB record:
- License expired
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Advanced Underground Systems licensed in California?
Advanced Underground Systems previously held California Contractors State License Board license number 879314, but the license expired on June 30, 2026 and is not currently valid. It was first issued on June 13, 2006.
What does Advanced Underground Systems specialize in?
Advanced Underground Systems is licensed for 2 CSLB classifications: A General Engineering Contractor and C-42 Sanitation System Contractor.
Where is Advanced Underground Systems headquartered?
Advanced Underground Systems is headquartered at 2491 Grace St, Riverside, CA 92504, in Riverside County, California.
Does Advanced Underground Systems have an active surety bond on file with CSLB?
Yes. Advanced Underground Systems has an active California contractor surety bond filed with Philadelphia Indemnity Insurance Company.
Does Advanced Underground Systems carry workers' compensation coverage?
Advanced Underground Systems reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Advanced Underground Systems's contractor license?
You can verify Advanced Underground Systems's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=879314.
- License issuedJun 13, 2006
- WC coverage startsJul 31, 2025
- Bond activeJan 31, 2026
- License expiredJun 30, 2026
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