Public CSLB records

Bonetti Frank Plumbing INC, C-4 Boiler, Hot Water Heating and Steam Fitting Contractor in Castro Valley, CA

License #251165·Corporation·Castro Valley, Alameda County
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Summary

Bonetti Frank Plumbing INC operating as a corporation holds California contractor license #251165, which is currently expired (lapsed May 31, 2026) and not valid to contract until it is renewed. First issued in 1967, the license has been on the CSLB roster for 59 years. It carries 5 CSLB classifications: C-4 Boiler, Hot Water Heating and Steam Fitting Contractor, C-20 HVAC Contractor, C-34 Pipeline Contractor, C-36 Plumbing Contractor, and C-42 Sanitation System Contractor. Records show an active surety bond on file with Hudson Insurance Company and active workers' compensation coverage from Ace American Insurance Company. The business is based in Castro Valley, in Alameda County, California.

Business Information
Address
20878 Rutledge Road
Castro Valley, CA 94546
License Details & Classifications
Financial & Insurance Coverage
Contractor Bond
Surety
Hudson Insurance Company
Bond Number
30146081
Effective
Oct 31, 2024
Status
Active
Workers' Compensation
Coverage
Leasing Firm, Temp Agency, etc
Carrier
Ace American Insurance Company
Policy Number
C73852717
Effective
Aug 1, 2025
Expires
Aug 1, 2026
Alert

This contractor has a compliance issue in its public CSLB record:

  • License expired
License StatusInactive / Expired
Contractor BondOn file
Workers' CompensationActive

An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this

Frequently asked questions
Is Bonetti Frank Plumbing INC licensed in California?

Bonetti Frank Plumbing INC previously held California Contractors State License Board license number 251165, but the license expired on May 31, 2026 and is not currently valid. It was first issued on December 26, 1967.

What does Bonetti Frank Plumbing INC specialize in?

Bonetti Frank Plumbing INC is licensed for 5 CSLB classifications: C-4 Boiler, Hot Water Heating and Steam Fitting Contractor, C-20 HVAC Contractor, C-34 Pipeline Contractor, C-36 Plumbing Contractor, and C-42 Sanitation System Contractor.

Where is Bonetti Frank Plumbing INC headquartered?

Bonetti Frank Plumbing INC is headquartered at 20878 Rutledge Road, Castro Valley, CA 94546, in Alameda County, California.

Does Bonetti Frank Plumbing INC have an active surety bond on file with CSLB?

Yes. Bonetti Frank Plumbing INC has an active California contractor surety bond filed with Hudson Insurance Company.

Does Bonetti Frank Plumbing INC carry workers' compensation coverage?

Yes. Bonetti Frank Plumbing INC carries active workers' compensation coverage through Ace American Insurance Company.

How do I verify Bonetti Frank Plumbing INC's contractor license?

You can verify Bonetti Frank Plumbing INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=251165.

Activity Timeline
  1. License issuedDec 26, 1967
  2. Bond activeOct 31, 2024
  3. WC coverage startsAug 1, 2025
  4. License expiredMay 31, 2026
  5. WC expiresAug 1, 2026
Other contractors in Alameda County
California lien & payment resources

Working a California job with Bonetti Frank Plumbing INC, or chasing an unpaid invoice? These free tools track your mechanics lien deadlines and rights under California Civil Code §§8200–8848.

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