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Licensed Plumbers in Rancho Santa Margarita, California

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

  • 22licensed plumbers
  • 20active (Clear)
  • 9.1%with a suspension
  • 50%workers' comp exempt
  • 11.2 yrsmedian time licensed
  • 72.7%corp / LLC / partnership (27.3% sole owner)
  • 3new in the last 12 months
  • —change tracking began November 1, 2026

CSLB's public data lists 22 plumbers with a mailing address in Rancho Santa Margarita, and 20 of them (90.9%) show a Clear primary status.

50% report a workers' comp exemption, 1.2 points lower than the statewide figure for plumbers (51.2%), so many of these businesses say they have no employees. The share with a suspension, 9.1%, is 5.2 points higher than the Orange County rate for the same license (3.9%).

3 of these licenses are less than a year old, while 54.5% have been held for 10 years or more. The median is 11.2 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 Rancho Santa Margarita

  1. Look the company up by name or license number (search Rancho Santa Margarita). On the profile, confirm three things: Clear status, the C-36 license for this kind of work, and a contractor's bond on file.
  2. Re-check the same number on CSLB's Instant License Check the day you sign; our copy is refreshed weekly and 9.1% of Rancho Santa Margarita listings here already show a suspension.
  3. Match the license holder's name to the name on the written contract and the person you meet. Ask for proof of workers' comp if anyone besides the owner will work on site. Hiring checklist.

All 22 plumbers in Rancho Santa Margarita

Rancho Santa Margarita 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 Rancho Santa Margarita
Business nameLicense #StatusYearsWorkers' compBond
Hercon Company INC 603928 Clear 36 Exempt On file
Seelbinder Plumbing 606458 Clear 36 Exempt On file
Anthony Plumbing 652121 Clear 34 None On file
Ags Services INC 709685 Clear 31 Insured On file
Master Plumbing 885312 Clear 20 Insured On file
Keil Keith Plumbing 935435 Clear 17 Exempt On file
South County Plumbing INC 972220 Clear 14 Insured On file
Plumbing Made Simple INC 998379 Clear 12 Exempt On file
J M L Plumbing Company INC 1005950 Clear 11 Insured On file
Acute Plumbing Concepts 1007544 Clear 11 Exempt On file
Rancho Heating & Air Plumbing INC 1024860 Clear 9 Insured On file
Pro Filtration Water Systems 1031539 Clear 9 Exempt On file
Pars Plumbing 1040626 Clear 8 Exempt On file
Santa Margarita Plumbing 1040867 Clear 8 Insured On file
Partners Plumbing INC 1057706 Clear 7 Insured On file
Integrity Plumbing INC 1098635 Clear 4 Insured On file
Boothney & Sons Plumbing 1121999 Clear 2 Exempt On file
Applied Plumbing and Rooter INC 1151992 Clear <1 Exempt On file
Waterman Plumbing 1161875 Clear <1 Exempt On file
Supreme Mechanical Contractors INC 1163047 Clear <1 Exempt On file
Helm Contracting 481200 Susp: workers' compensation 41 None On file
Affordable Plumbing Heating and Air 706222 Susp: workers' compensation 31 None On file

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 Rancho Santa Margarita?

CSLB's current public file lists 22 plumbers with a Rancho Santa Margarita mailing address. 20 have a Clear status, and 72.7% 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?

Each profile shows the workers' comp type, insurer and policy dates from CSLB's file. Among Rancho Santa Margarita plumbers, 50% are exempt (no employees), 36.4% insured and 13.6% without current coverage. Verify a policy with CSLB's insurer search (step by step).

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