John Porsia
John Porsia operating as a sole owner is licensed in California under CSLB number 645769. The license was first issued in 1992, putting the business at 34 years on the active CSLB roster. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with Nationwide Mutual Insurance Company and an exempt workers' compensation status (no employees on payroll). The business is based in Thousand Oaks, in Ventura County, California.
- License Number
- 645769
- Issued
- May 21, 1992
- Status
- CLEAR
- Expires
- Mar 31, 2028
- Entity
- Sole Owner
- Surety
- Nationwide Mutual Insurance Company
- Bond Number
- 7901211886
- Effective
- Feb 24, 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 John Porsia licensed in California?
Yes. John Porsia holds California Contractors State License Board license number 645769. The license was first issued on May 21, 1992. It is valid through March 31, 2028.
What does John Porsia specialize in?
John Porsia is licensed for one CSLB classification: B General Building Contractor.
Where is John Porsia headquartered?
John Porsia is headquartered at 748 Avenida De Las Flores, Thousand Oaks, CA 91360, in Ventura County, California.
Does John Porsia have an active surety bond on file with CSLB?
Yes. John Porsia has an active California contractor surety bond filed with Nationwide Mutual Insurance Company.
Does John Porsia carry workers' compensation coverage?
John Porsia reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify John Porsia's contractor license?
You can verify John Porsia's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=645769.
- License issuedMay 21, 1992
- Bond activeFeb 24, 2026
- WC coverage startsMar 10, 2026
- License expiresMar 31, 2028
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