✓

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

California licensing requirements →

🛡️

Hiring this contractor?

Get alerts if their license status changes.

🏢

Is this your business?

Claim your profile to manage your listing.

ALPHA SD INC

License Number: 1021187
State: California
Status: active
Business Type: Corporation
Address: 8480 PRODUCTION AVE SAN DIEGO, CA, 92121 San Diego County
Phone: (619) 918 8880

License Dates

Issued

11/28/2016

Expires

11/30/2026

Expires in 8 months

CSLB Last Updated

11/06/2025

License Classifications

B General Building Contractor

Personnel & Officers

THAI BAO NGUYEN

Responsible Managing Officer

Former

LIU PING YAN

Responsible Managing Officer

Former

ZHOU MENGNAN

Responsible Managing Officer

Active

DU SITONG

Chief Executive Officer/President

Active

Contractor Bond

Bonded

Amount: $25,000

Company: WESTERN SURETY COMPANY

Bond #67648127

Effective: 11/05/2025

Workers' Compensation

Has policy

Carrier: HARTFORD CASUALTY INSURANCE COMPANY

Policy #01WECAB9OIS

Effective: 08/21/2024

Expires: 08/21/2026

CSLB designation: Workers' Compensation Insurance

Complaints & Disciplinary History

No disciplinary actions on file

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.

Verify Another Contractor

Homeowner Resources

SAN DIEGO, CA Exp: 02/29/2028 Bonded Insured