Royal Plumbing Service, C-36 Plumbing Contractor in South San Francisco, CA
Royal Plumbing Service operating as a sole owner holds an active California contractor license (CSLB #609288), valid through Feb 29, 2028. First issued in 1991, the license has been on the CSLB roster for 35 years. It carries a single CSLB classification: C-36 — Plumbing Contractor. Records show an active surety bond on file with Atlantic Specialty Insurance Company and an exempt workers' compensation status (no employees on payroll). The business is based in South San Francisco, in San Mateo County, California.
- License Number
- 609288
- Issued
- Jan 14, 1991
- Status
- CLEAR
- Expires
- Feb 29, 2028
- Entity
- Sole Owner
- Surety
- Atlantic Specialty Insurance Company
- Bond Number
- 800230371
- Effective
- Jan 21, 2026
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Jan 17, 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 Royal Plumbing Service licensed in California?
Yes. Royal Plumbing Service holds California Contractors State License Board license number 609288, which is active and in good standing. The license was first issued on January 14, 1991. It is valid through February 29, 2028.
What does Royal Plumbing Service specialize in?
Royal Plumbing Service is licensed for one CSLB classification: C-36 Plumbing Contractor.
Where is Royal Plumbing Service headquartered?
Royal Plumbing Service is headquartered at P O Box 5681, South San Francisco, CA 940835681, in San Mateo County, California.
Does Royal Plumbing Service have an active surety bond on file with CSLB?
Yes. Royal Plumbing Service has an active California contractor surety bond filed with Atlantic Specialty Insurance Company.
Does Royal Plumbing Service carry workers' compensation coverage?
Royal Plumbing Service reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Royal Plumbing Service's contractor license?
You can verify Royal Plumbing Service's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=609288.
- License issuedJan 14, 1991
- WC coverage startsJan 17, 2026
- Bond activeJan 21, 2026
- License expiresFeb 29, 2028
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