Oncesource San Diego, A General Engineering Contractor in San Diego, CA
Oncesource San Diego operating as a sole owner holds an active California contractor license (CSLB #406797), valid through Jan 31, 2028. First issued in 1981, the license has been on the CSLB roster for 45 years. It carries 2 CSLB classifications: A General Engineering Contractor and B General Building Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and an exempt workers' compensation status (no employees on payroll). The business is based in San Diego, in San Diego County, California.
- License Number
- 406797
- Issued
- Jun 2, 1981
- Status
- CLEAR
- Expires
- Jan 31, 2028
- Entity
- Sole Owner
- Surety
- American Contractors Indemnity Company
- Bond Number
- 101034987
- Effective
- Feb 6, 2026
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Mar 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 Oncesource San Diego licensed in California?
Yes. Oncesource San Diego holds California Contractors State License Board license number 406797, which is active and in good standing. The license was first issued on June 2, 1981. It is valid through January 31, 2028.
What does Oncesource San Diego specialize in?
Oncesource San Diego is licensed for 2 CSLB classifications: A General Engineering Contractor and B General Building Contractor.
Where is Oncesource San Diego headquartered?
Oncesource San Diego is headquartered at P.O. Box 178739, San Diego, CA 92117, in San Diego County, California.
Does Oncesource San Diego have an active surety bond on file with CSLB?
Yes. Oncesource San Diego has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Oncesource San Diego carry workers' compensation coverage?
Oncesource San Diego reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Oncesource San Diego's contractor license?
You can verify Oncesource San Diego's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=406797.
- License issuedJun 2, 1981
- Bond activeFeb 6, 2026
- WC coverage startsMar 10, 2026
- License expiresJan 31, 2028
- Glad William F Company#262241Alpine·A General Engineering Contractor
- T & T Custom Builders INC#265931Spring Valley·A General Engineering Contractor
- Filanc#134877Escondido·A General Engineering Contractor
- Baker Electric#161756Escondido·A General Engineering Contractor
- T B Penick & Sons INC#185381San Diego·A General Engineering Contractor
- Lusardi Construction CO#207287San Marcos·A General Engineering Contractor
- Saturn Electric INC#219097San Diego·A General Engineering Contractor
- Wylie C E Construction Company#218738Rancho Santa Fe·A General Engineering Contractor
Working a California job with Oncesource San Diego, or chasing an unpaid invoice? These free tools track your mechanics lien deadlines and rights under California Civil Code §§8200–8848.
- California preliminary notice deadline calculatorFind your 20-day deadline and the lien rights at risk.
- Do I need a preliminary notice in California?Answer a few questions to see if the 20-day notice applies.
- Did I lose my California lien rights?Check whether your mechanics lien window has passed.
- Unpaid construction invoice in CaliforniaYour options and deadlines for collecting on a California job.
Own Oncesource San Diego? Claim or correct this profile