Best Licensed Plumbers in South San Francisco, CA
45 plumbing companies registered in South San Francisco hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by workers' compensation cover and years licensed.
- 426 active C-36 plumbing licenses in San Mateo County; 47 registered in South San Francisco
- 28 of South San Francisco's 47 licenses (59.6%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in South San Francisco: 15 years
- Longest South San Francisco licensure: since 1982
- 35 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1982
- Phone
- (650) 271-3244
- Verified
- August 17, 2026
- Licensed since
- 1986
- Phone
- (650) 344-4424
- Verified
- August 17, 2026
- Licensed since
- 1990
- Phone
- (650) 742-9640
- Verified
- August 17, 2026
- Licensed since
- 1990
- Phone
- (650) 876-1801
- Verified
- August 17, 2026
- Licensed since
- 1992
- Phone
- (650) 271-6436
6.Dpw Inc.
- Verified
- August 17, 2026
- Licensed since
- 1994
- Phone
- (650) 588-8482
- Verified
- August 17, 2026
- Licensed since
- 1997
- Phone
- (650) 992-6127
8.Accutite
- Verified
- August 17, 2026
- Licensed since
- 1999
- Phone
- (650) 616-1200
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Steven Harris Glorit Plumbing Contractor | #430548 | On file | 1982 |
| O'connor Plumbing & Fire Protection Inc. | #498866 | On file | 1986 |
| Brady Air Service Inc. | #585882 | On file | 1990 |
| Hargens Inc. | #592325 | On file | 1990 |
| Firm Construction Company | #652070 | On file | 1992 |
| Dpw Inc. | #684939 | On file | 1994 |
San Mateo County plumbing licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 426 active C-36 plumbing licenses in San Mateo County, 47 of them registered in South San Francisco. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median South San Francisco license has been held 15 years, and the longest-standing one dates to 1982. 28 of South San Francisco's 47 licenses (59.6%) carry current workers' compensation cover in CSLB's file. That is employee injury cover, not liability insurance, and a blank usually means an owner-operator with no employees - lawful, and not a mark against anyone. The contractor bond is not a signal here: 426 of the county's 426 licenses carry the same $25,000 bond California sets by statute. 35 county licenses reach their expiration date within the next 90 days. CSLB cannot link straight to a license record, so every listing above shows its number for you to type into CSLB's license lookup. How we verify.
Plumbers in South San Francisco: common questions
How many licensed plumbers are there in South San Francisco?
47 active C-36 plumbing licenses are registered in South San Francisco, out of 426 across San Mateo County. 45 South San Francisco-registered companies passed our license verification, and the 8 on this page are the top-ranked of those. Only licenses CSLB shows as CLEAR and unexpired are listed.
Does California license plumbers?
Yes. California licenses contractors by classification, and C-36 is the CSLB classification that authorises this work. 47 active C-36 plumbing licenses are registered in South San Francisco and 426 across San Mateo County, the longest-standing issued in 1982. Only CLEAR, unexpired licenses appear here.
How do I check a plumber's license in California?
Every listing above shows its CSLB license number. CSLB cannot link straight to a record, so open its license lookup and type the number in: it shows status, expiration, the contractor bond and workers' compensation cover, which 28 of South San Francisco's 47 currently carry. 35 San Mateo County licenses expire within 90 days.