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Licensed Plumbers in Glendora, California

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

  • 38licensed plumbers
  • 37active (Clear)
  • 2.6%with a suspension
  • 44.7%workers' comp exempt
  • 15.7 yrsmedian time licensed
  • 42.1%corp / LLC / partnership (57.9% sole owner)
  • 3new in the last 12 months
  • —change tracking began November 1, 2026

Glendora is home to 38 plumbers in CSLB's license file, ranking #35 of 74 Los Angeles County cities for this trade. 97.4% are Clear.

44.7% report a workers' comp exemption, 6.5 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, 2.6%, is 2 points lower than the Los Angeles County rate for the same license (4.6%).

The median plumber here has held a license for 15.7 years (more than the statewide median of 13.4), and 3 licenses were issued in the last 12 months.

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 Glendora

  1. Find the business in the list below, or search all 38 Glendora listings, and open its profile. You want a Clear status and the C-36 classification (a B license can also cover it as part of a multi-trade job).
  2. Confirm it live with CSLB's Instant License Check. Statuses change between our weekly refreshes, especially workers' comp and bond suspensions.
  3. Get the bid and contract in writing with the license number on it. If the job tops $1,000 in labor and materials, a licensed plumber is required by law. See the $1,000 rule.

All 38 plumbers in Glendora

Glendora 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 Glendora
Business nameLicense #StatusYearsWorkers' compBond
G & S Construction 357542 Clear 48 Exempt On file
Glendora Plumbing & Heating INC 388123 Clear 46 Insured On file
Ricci Jack 411837 Clear 45 Exempt On file
Positive Plumbing INC 540754 Clear 38 Exempt On file
Jordanair INC 560429 Clear 37 Insured On file
Cypress Heating & Air Conditioning INC 593268 Clear 36 Insured On file
Count On Plumbing 610947 Clear 35 Insured On file
D C Plumbing 687907 Clear 32 Insured On file
K B Engineering INC 819366 Clear 23 Insured On file
Pipe Master's Plumbing 849208 Clear 22 Exempt On file
J G Construction CO 854752 Clear 21 Exempt On file
Accurate Electric, Plumbing, Heating and Air 860517 Clear 21 Insured On file
Aggressive Plumbing 871119 Clear 20 Exempt On file
Elser Plumbing 892891 Clear 19 Exempt On file
M & K Electrical & Plumbing Heating & Air Conditioning 902942 Clear 19 Exempt On file
Cappello Plumbing 931278 Clear 17 Insured On file
Preferred One Plumbing 934012 Clear 17 Insured On file
Verholtz Construction Services 933356 Clear 17 Insured On file
Alberto's Plumbing 979569 Clear 13 Exempt On file
Isaac & Sons Plumbing INC 1000605 Clear 11 Insured On file
R D Smith Heating and A C 1015727 Clear 10 Insured On file
Morgan Plumbing 1020151 Clear 10 Exempt On file
Thomas Robert Plumbing 1028084 Clear 9 Exempt On file
Gardenball General Construction Company 1041273 Clear 8 Insured On file
Plumbing Buddies LLC 1042870 Clear 8 Insured On file
So Cal Leak Detection 1071365 Clear 5 Exempt On file
USA Electricians Service INC 1078816 Clear 5 Insured On file
J G Plumbing & Rooter INC 1087284 Clear 4 Insured On file
Morpro Construction 1087401 Clear 4 Insured On file
Here To Help Plumbing & Rooter 1116916 Clear 2 Insured On file
Mjb Plumbing 1116751 Clear 2 Exempt On file
Ryan C Plumbing 1125687 Clear 2 Exempt On file
Rapid Rescue Rooter & Plumbing 1127125 Clear 2 Insured On file
M & J Fix It LLC 1144102 Clear 1 Insured On file
Faith Plumbing 1151816 Clear <1 Exempt On file
Nrba Plumbing & Water Heating 1158186 Clear <1 Exempt On file
Groundbreaking Plumbing LLC 1160090 Clear <1 Exempt On file
Cypress Heating & Air Conditioning 302865 Susp: workers' compensation 51 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 Glendora?

CSLB's current public file lists 38 plumbers with a Glendora mailing address. 37 have a Clear status, and 81.6% 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 Glendora plumbers, 44.7% are exempt (no employees), 52.6% insured and 2.6% without current coverage. Verify a policy with CSLB's insurer search (step by step).

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Guides