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Licensed Plumbers in South San Francisco, California

Updated November 1, 2026 from CSLB's public license file · C-36 Plumbing Contractor

  • 53licensed plumbers
  • 51active (Clear)
  • 3.8%with a suspension
  • 39.6%workers' comp exempt
  • 16.5 yrsmedian time licensed
  • 62.3%corp / LLC / partnership (37.7% sole owner)
  • 5new in the last 12 months
  • —change tracking began November 1, 2026

South San Francisco is home to 53 plumbers in CSLB's license file, ranking #4 of 9 San Mateo County cities for this trade. 96.2% are Clear.

The share with a suspension (3.8%) is close to the San Mateo County rate for the same license (2.9%). 39.6% report a workers' comp exemption, 11.6 points lower than the statewide figure for plumbers (51.2%), so many of these businesses say they have no employees.

5 of these licenses are less than a year old, while 62.3% have been held for 10 years or more. The median is 16.5 years.

In California this work generally calls for the C-36 Plumbing Contractor license (or a B license when it is part of a larger multi-trade job). See the C-36 Plumbing Contractor guide for what the license covers.

How to check a plumber's license in South San Francisco

  1. Open the plumber's profile from the table below (or search South San Francisco listings by name). Check that C-36 appears among its classifications and that the primary status reads Clear. What C-36 covers.
  2. Before any money changes hands, verify the license on CSLB's own lookup. Our data comes from CSLB's weekly file, so a very recent change may not show here yet.
  3. Ask for the pocket license and a photo ID and match the name to your contract. Work of $1,000 or more needs a license (the $1,000 rule), and a down payment can't exceed $1,000 or 10% (down payment rules).

50 of 53 plumbers in South San Francisco

South San Francisco plumbers sorted with Clear licenses first, then by years licensed. Badges reflect CSLB's file dated November 1, 2026, not a rating of anyone's work.

Licensed plumbers in South San Francisco
Business nameLicense #StatusYearsWorkers' compBond
Glorit Steven Harris Plumbing Contractor 430548 Clear 44 Insured On file
O'connor Plumbing & Fire Protection INC 498866 Clear 40 Insured On file
O'donoghue Finbarr 505353 Clear 39 Exempt On file
Brady Air Conditioning INC 585882 Clear 36 Insured On file
Hargens INC 592325 Clear 36 Insured On file
Royal Plumbing Service 609288 Clear 35 Exempt On file
Bay Cities Development 638618 Clear 34 Insured On file
Systems Plumbing & General Contractor 640317 Clear 34 Exempt On file
Firm Construction Company 652070 Clear 34 Insured On file
Dpw INC 684939 Clear 32 Insured On file
Minucciani Wm Plumbing 693073 Clear 32 Exempt On file
Summers Plumbing 738391 Clear 29 Insured On file
Accutite 762034 Clear 27 Insured On file
Expert Rooter & Plumbing INC 769967 Clear 27 Insured On file
Smelly Mel's Plumbing INC 786183 Clear 26 Insured On file
Totah Naim B 801676 Clear 24 Exempt On file
Chen's Construction and Mechanical INC 814802 Clear 24 Insured On file
R M I Mechanical Contractors INC 831408 Clear 22 Insured On file
Smart Plumbing & Drain INC 829941 Clear 22 Exempt On file
Performance Plumbing 841080 Clear 22 Insured On file
Gateway Plumbing 846292 Clear 22 Insured On file
In & Out Plumbing and Construction INC 878184 Clear 20 Insured On file
Cai Steven N 911896 Clear 18 Exempt On file
Sovereignty Plumbing 915499 Clear 18 Exempt On file
Eddy's Plumbing CO INC 919899 Clear 18 Insured On file
Polytec Construction Company INC 943505 Clear 16 Insured On file
Sugar Bear Plumbing INC 946657 Clear 16 Insured On file
Dcs Plumbing LLC 962105 Clear 15 Exempt On file
Mr Unger 982722 Clear 13 Insured On file
Adl Plumbing 988585 Clear 12 Exempt On file
Buri Buri Plumbing INC 1018338 Clear 10 Insured On file
Bullitt Rooter LLC 1050627 Clear 7 Insured On file
Brady Air Service INC 1051173 Clear 7 Insured On file
Chosen Rooter & Plumbing INC 1054611 Clear 7 Insured On file
Advantage Plumbing Sf INC 1066857 Clear 6 Insured On file
Splashfix Plumbing 1085046 Clear 4 Insured On file
S F Plumbing and Rooter 1087540 Clear 4 Exempt On file
Gomez Plumbing 1095298 Clear 4 Exempt On file
Asap Plumbing Pro 1113916 Clear 2 Exempt On file
Preventive Plumbing 1114728 Clear 2 Exempt On file
Draintek Plumbing INC 1124286 Clear 2 Exempt On file
Crystal Springs Plumbing LLC 1128212 Clear 2 Insured On file
Joe Sf Plumbing INC 1130706 Clear 1 Insured On file
Asap Plumbing Pros LLC 1133310 Clear 1 Insured On file
Sierra Builders & Design INC 1136963 Clear 1 Insured On file
Mighty Monkey Plumbing 1139383 Clear 1 Exempt On file
Water Heater Solutions LLC 1148713 Clear <1 Exempt On file
Plumber 33 INC 1152292 Clear <1 Exempt On file
Rooter Plus Plumbing 1157310 Clear <1 Exempt On file
Trent Twisselman Plumbing 1157731 Clear <1 Exempt On file

See all 53 plumbers in South San Francisco

Source: CSLB public data · Updated November 1, 2026 Status can change at any time. Verify on CSLB's Instant License Check.

Frequently asked questions

How many licensed plumbers are in South San Francisco?

CSLB's current public file lists 53 plumbers with a South San Francisco mailing address. 51 have a Clear status, and 92.5% show no issues at all in the file (no suspension, no pending action, bond on file, not near expiration).

What license does a plumber need in California?

In California this work generally calls for the C-36 Plumbing Contractor license (or a B license when it is part of a larger multi-trade job). Any job of $1,000 or more in labor and materials needs a licensed contractor. Read our guide to the $1,000 rule.

How do I check a plumber's workers' comp?

Open the contractor's profile here to see the workers' comp type and insurer from CSLB's file. In South San Francisco, 58.5% of plumbers list a policy, 39.6% claim an exemption and 1.9% show no current coverage. Confirm the policy with CSLB's workers' comp search before work starts. How to check workers' comp.

Related

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Other licensed trades in South San Francisco

Guides