License is active
Source: Contractors State License Board (CSLB)
Licensed
Current and in good standing
Bonded
$25,000 surety bond
Insured
Workers' comp coverage on file
Clean record
No complaints or disciplinary actions
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PRINCIPAL PLUMBING CO
- License Number
- 1042055
- State
- California
- Status
- active
- Business Type
- Sole Owner
- Address
- 9374 BLACK HILLS WAY SAN DIEGO, CA, 92129 San Diego County
- Phone
- (858) 216 0476
License Dates
Issued
07/19/2018
Expires
07/31/2026
Expires in 4 months — verify renewal before long contracts
CSLB Last Updated
07/28/2025
License Classifications
Personnel & Officers
NGUYEN NEWTON THIEN
Sole Owner
Contractor Bond
Amount: $25,000
Company: MERCHANTS BONDING COMPANY (MUTUAL)
Bond #100359406
Effective: 02/19/2024
Workers' Compensation
Carrier: CLEAR SPRING PROPERTY AND CASUALTY COMPANY
Policy #CWC02378602
Effective: 07/25/2025
Expires: 07/25/2026
CSLB designation: Workers' Compensation Insurance
Complaints & Disciplinary History
This reflects CSLB's bulk license data. For detailed complaint history including pending investigations, check the official CSLB record.
Verify this record on the official state licensing board
View on Contractors State License Board (CSLB) →Learn how to verify contractor licenses in California
California licensing guide →Data sourced from official state licensing board records. Always confirm critical information directly with the state board.
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