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Licensed Plumbers in Walnut Creek, California

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

  • 35licensed plumbers
  • 35active (Clear)
  • 0%with a suspension
  • 60%workers' comp exempt
  • 19.6 yrsmedian time licensed
  • 51.4%corp / LLC / partnership (48.6% sole owner)
  • 2new in the last 12 months
  • —change tracking began November 1, 2026

Walnut Creek is home to 35 plumbers in CSLB's license file, ranking #5 of 10 Contra Costa County cities for this trade. 100% are Clear.

60% report a workers' comp exemption, 8.8 points higher than the statewide figure for plumbers (51.2%), so many of these businesses say they have no employees. The share with a suspension, 0%, is 3.1 points lower than the Contra Costa County rate for the same license (3.1%).

The median plumber here has held a license for 19.6 years (more than the statewide median of 13.4), and 2 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 Walnut Creek

  1. Open the plumber's profile from the table below (or search Walnut Creek listings by name). Check that C-36 appears among its classifications and that the primary status reads Clear. What C-36 covers.
  2. Confirm it live with CSLB's Instant License Check. Statuses change between our weekly refreshes, especially workers' comp and bond suspensions.
  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).

All 35 plumbers in Walnut Creek

Walnut Creek 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 Walnut Creek
Business nameLicense #StatusYearsWorkers' compBond
Williams Mike Plumbing 311842 Clear 51 Exempt On file
Hearthstone Building & Restoration 319036 Clear 50 Insured On file
Rivers Plumbing Heating and Air 406446 Clear 45 Exempt On file
Diablo Rooter 510112 Clear 39 Exempt On file
Freeman's Heating Air Conditioning & Electrical Services 519835 Clear 39 Insured On file
T-H Construction 521678 Clear 38 Exempt On file
Joukoff Philip V 547148 Clear 38 Exempt On file
Air - Con Mechanical Services INC 636428 Clear 34 Insured On file
Rooter-Man 646020 Clear 34 Exempt On file
H M S 649845 Clear 34 Exempt On file
Stom Brett Martin 687252 Clear 32 Exempt On file
Precision Plumbing 709108 Clear 31 Insured On file
Bds Plumbing INC 713183 Clear 31 Insured On file
A M A C Construction & Restoration 796327 Clear 25 Insured On file
C D Plumbing Construction 804330 Clear 24 Exempt On file
All Bay Heating Air Conditioning & Construction INC 805473 Clear 24 Insured On file
Executive Plumbing Service 873593 Clear 20 Exempt On file
M G B Pipe Works INC 893155 Clear 19 Insured On file
Leapfrog Plumbing 929641 Clear 17 Insured On file
Salcedo's General Builder 932453 Clear 17 Exempt On file
Andiamo Plumbing 938192 Clear 17 Exempt On file
A & D Plumbing 959962 Clear 15 Exempt On file
Liko Industries INC 972470 Clear 14 Exempt On file
Ruben's Plumbing 972746 Clear 14 Exempt On file
Exact Construction & Developers INC 1007771 Clear 11 Exempt On file
Providence Water Heaters INC 1013553 Clear 10 Insured On file
West Coast Waterproofers INC 1051682 Clear 7 Insured On file
Novin Construction INC 1091697 Clear 4 Insured On file
Go Beyond Builders INC 1104756 Clear 3 Insured On file
Excalibur Water Heaters INC 1106329 Clear 3 Insured On file
Water Services 1125399 Clear 2 Exempt On file
R.a.p. Plumbing 1139304 Clear 1 Exempt On file
Humphrey Plumbing 1143253 Clear 1 Exempt On file
Bells Plumbing Solutions 1147956 Clear <1 Exempt On file
Delta Drain and Pipe 1153574 Clear <1 Exempt 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 Walnut Creek?

CSLB's current public file lists 35 plumbers with a Walnut Creek mailing address. 35 have a Clear status, and 88.6% 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?

Look for C-36 on the license. 35 businesses in Walnut Creek hold it. Small jobs under $1,000 with no permit and no employees are exempt; everything else needs a license (details).

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 Walnut Creek plumbers, 60% are exempt (no employees), 40% insured and 0% without current coverage. Verify a policy with CSLB's insurer search (step by step).

Related

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Other licensed trades in Walnut Creek

Guides