Duong Thanh Quoc, B General Building Contractor in Rosemead, CA
Duong Thanh Quoc operating as a sole owner holds California contractor license #975350, which is currently expired (lapsed Jul 31, 2026) and not valid to contract until it is renewed. First issued in 2012, the license has been on the CSLB roster for 14 years. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with Western Surety Company and an exempt workers' compensation status (no employees on payroll). The business is based in Rosemead, in Los Angeles County, California.
- License Number
- 975350
- Issued
- Jul 28, 2012
- Status
- CLEAR
- Expires
- Jul 31, 2026
- Entity
- Sole Owner
- Surety
- Western Surety Company
- Bond Number
- 67571798
- Effective
- Nov 9, 2025
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Aug 12, 2024
- 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 Duong Thanh Quoc licensed in California?
Duong Thanh Quoc previously held California Contractors State License Board license number 975350, but the license expired on July 31, 2026 and is not currently valid. It was first issued on July 28, 2012.
What does Duong Thanh Quoc specialize in?
Duong Thanh Quoc is licensed for one CSLB classification: B General Building Contractor.
Where is Duong Thanh Quoc headquartered?
Duong Thanh Quoc is headquartered at 1609 San Gabriel Boulevard, Rosemead, CA 91770, in Los Angeles County, California.
Does Duong Thanh Quoc have an active surety bond on file with CSLB?
Yes. Duong Thanh Quoc has an active California contractor surety bond filed with Western Surety Company.
Does Duong Thanh Quoc carry workers' compensation coverage?
Duong Thanh Quoc reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Duong Thanh Quoc's contractor license?
You can verify Duong Thanh Quoc's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=975350.
- License issuedJul 28, 2012
- WC coverage startsAug 12, 2024
- Bond activeNov 9, 2025
- License expiredJul 31, 2026
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