William Bonadiman, A General Engineering Contractor in Mentone, CA
William Bonadiman operating as a sole owner holds an active California contractor license (CSLB #999447), valid through Sep 30, 2027. First issued in 2014, the license has been on the CSLB roster for 12 years. It carries a single CSLB classification: A — General Engineering 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 Mentone, in San Bernardino County, California.
- License Number
- 999447
- Issued
- Dec 19, 2014
- Status
- CLEAR
- Expires
- Sep 30, 2027
- Entity
- Sole Owner
- Surety
- American Contractors Indemnity Company
- Bond Number
- 100992775
- Effective
- Sep 9, 2025
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Sep 15, 2025
- 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 William Bonadiman licensed in California?
Yes. William Bonadiman holds California Contractors State License Board license number 999447, which is active and in good standing. The license was first issued on December 19, 2014. It is valid through September 30, 2027.
What does William Bonadiman specialize in?
William Bonadiman is licensed for one CSLB classification: A General Engineering Contractor.
Where is William Bonadiman headquartered?
William Bonadiman is headquartered at 2141 Mentone Blvd, Mentone, CA 92359, in San Bernardino County, California.
Does William Bonadiman have an active surety bond on file with CSLB?
Yes. William Bonadiman has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does William Bonadiman carry workers' compensation coverage?
William Bonadiman reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify William Bonadiman's contractor license?
You can verify William Bonadiman's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=999447.
- License issuedDec 19, 2014
- Bond activeSep 9, 2025
- WC coverage startsSep 15, 2025
- License expiresSep 30, 2027
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