Master Plumbing, C-36 Plumbing Contractor in San Francisco, CA
Master Plumbing operating as a sole owner holds an active California contractor license (CSLB #573292), valid through Jul 31, 2027. First issued in 1989, the license has been on the CSLB roster for 37 years. It carries a single CSLB classification: C-36 — Plumbing Contractor. Records show an active surety bond on file with Ohio Casualty Insurance Company (the) and an exempt workers' compensation status (no employees on payroll). The business is based in San Francisco, in San Francisco County, California.
- License Number
- 573292
- Issued
- Jul 20, 1989
- Status
- CLEAR
- Expires
- Jul 31, 2027
- Entity
- Sole Owner
- Surety
- Ohio Casualty Insurance Company (the)
- Bond Number
- 271286C
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Jun 23, 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 Master Plumbing licensed in California?
Yes. Master Plumbing holds California Contractors State License Board license number 573292, which is active and in good standing. The license was first issued on July 20, 1989. It is valid through July 31, 2027.
What does Master Plumbing specialize in?
Master Plumbing is licensed for one CSLB classification: C-36 Plumbing Contractor.
Where is Master Plumbing headquartered?
Master Plumbing is headquartered at 2327 30th Avenue, San Francisco, CA 94116, in San Francisco County, California.
Does Master Plumbing have an active surety bond on file with CSLB?
Yes. Master Plumbing has an active California contractor surety bond filed with Ohio Casualty Insurance Company (the).
Does Master Plumbing carry workers' compensation coverage?
Master Plumbing reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Master Plumbing's contractor license?
You can verify Master Plumbing's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=573292.
- License issuedJul 20, 1989
- Bond activeJan 1, 2023
- WC coverage startsJun 23, 2025
- License expiresJul 31, 2027
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