Costello's Plumbing, C-36 Plumbing Contractor in San Leandro, CA
Costello's Plumbing operating as a sole owner holds California contractor license #1018923, which is currently expired (lapsed Sep 30, 2026) and not valid to contract until it is renewed. First issued in 2016, the license has been on the CSLB roster for 10 years. It carries a single CSLB classification: C-36 — Plumbing Contractor. Records show an active surety bond on file with Hudson Insurance Company and active workers' compensation coverage from Amtrust Insurance Company. The business is based in San Leandro, in Alameda County, California.
- License Number
- 1018923
- Issued
- Sep 30, 2016
- Status
- CLEAR
- Expires
- Sep 30, 2026
- Entity
- Sole Owner
- Surety
- Hudson Insurance Company
- Bond Number
- 30127711
- Effective
- Aug 16, 2023
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Amtrust Insurance Company
- Policy Number
- SWC1643342
- Effective
- Apr 16, 2026
- Expires
- Apr 16, 2027
This contractor has a compliance issue in its public CSLB record:
- License expired
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Costello's Plumbing licensed in California?
Costello's Plumbing previously held California Contractors State License Board license number 1018923, but the license expired on September 30, 2026 and is not currently valid. It was first issued on September 30, 2016.
What does Costello's Plumbing specialize in?
Costello's Plumbing is licensed for one CSLB classification: C-36 Plumbing Contractor.
Where is Costello's Plumbing headquartered?
Costello's Plumbing is headquartered at 3826 Anza Way, San Leandro, CA 94578, in Alameda County, California.
Does Costello's Plumbing have an active surety bond on file with CSLB?
Yes. Costello's Plumbing has an active California contractor surety bond filed with Hudson Insurance Company.
Does Costello's Plumbing carry workers' compensation coverage?
Yes. Costello's Plumbing carries active workers' compensation coverage through Amtrust Insurance Company.
How do I verify Costello's Plumbing's contractor license?
You can verify Costello's Plumbing's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1018923.
- License issuedSep 30, 2016
- Bond activeAug 16, 2023
- WC coverage startsApr 16, 2026
- License expiredSep 30, 2026
- WC expiresApr 16, 2027
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