O'sullivan Gilbert Construction, B General Building Contractor in San Mateo, CA
O'sullivan Gilbert Construction operating as a sole owner holds an active California contractor license (CSLB #803045), valid through Jan 31, 2028. First issued in 2002, the license has been on the CSLB roster for 24 years. It carries a single CSLB classification: B — General Building 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 San Mateo, in San Mateo County, California.
- License Number
- 803045
- Issued
- Jan 14, 2002
- Status
- CLEAR
- Expires
- Jan 31, 2028
- Entity
- Sole Owner
- Surety
- Philadelphia Indemnity Insurance Company
- Bond Number
- PB10163409454
- Effective
- Mar 31, 2026
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Jan 30, 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 O'sullivan Gilbert Construction licensed in California?
Yes. O'sullivan Gilbert Construction holds California Contractors State License Board license number 803045, which is active and in good standing. The license was first issued on January 14, 2002. It is valid through January 31, 2028.
What does O'sullivan Gilbert Construction specialize in?
O'sullivan Gilbert Construction is licensed for one CSLB classification: B General Building Contractor.
Where is O'sullivan Gilbert Construction headquartered?
O'sullivan Gilbert Construction is headquartered at 928 South Norfolk, San Mateo, CA 94401, in San Mateo County, California.
Does O'sullivan Gilbert Construction have an active surety bond on file with CSLB?
Yes. O'sullivan Gilbert Construction has an active California contractor surety bond filed with Philadelphia Indemnity Insurance Company.
Does O'sullivan Gilbert Construction carry workers' compensation coverage?
O'sullivan Gilbert Construction reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify O'sullivan Gilbert Construction's contractor license?
You can verify O'sullivan Gilbert Construction's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=803045.
- License issuedJan 14, 2002
- WC coverage startsJan 30, 2026
- Bond activeMar 31, 2026
- License expiresJan 31, 2028
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