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Licensed Plumbers in Hayward, California

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

  • 85licensed plumbers
  • 81active (Clear)
  • 4.7%with a suspension
  • 43.5%workers' comp exempt
  • 6.9 yrsmedian time licensed
  • 58.8%corp / LLC / partnership (41.2% sole owner)
  • 10new in the last 12 months
  • —change tracking began November 1, 2026

CSLB's public data lists 85 plumbers with a mailing address in Hayward, and 81 of them (95.3%) show a Clear primary status.

43.5% report a workers' comp exemption, 7.7 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, 4.7%, is 1.3 points higher than the Alameda County rate for the same license (3.4%).

Experience varies: 38.8% have been licensed 10+ years and 10 are new this year (median 6.9 years, vs 13.4 statewide).

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 Hayward

  1. Find the business in the list below, or search all 85 Hayward 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. Re-check the same number on CSLB's Instant License Check the day you sign; our copy is refreshed weekly and 4.7% of Hayward 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.

50 of 85 plumbers in Hayward

Hayward 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 Hayward
Business nameLicense #StatusYearsWorkers' compBond
D W Nicholson Corporation 68847 Clear 86 Insured On file
Aqua Duct Plumbing Contractors 261195 Clear 56 Insured On file
R S Construction CO 362691 Clear 48 Insured On file
Murcia's Plumbing 373927 Clear 47 Exempt On file
Klingenbeck Thomas Edward 421918 Clear 44 Insured On file
A-1 Septic Tank Service INC 438710 Clear 43 Insured On file
Remodelers the 527097 Clear 38 Exempt On file
T V P C INC 560039 Clear 37 Insured On file
Water Works Plumbing Company 611764 Clear 35 Exempt On file
Quality Plumbing 690624 Clear 32 Exempt On file
Buckley Plumbing and Engineering INC 727798 Clear 30 Insured On file
Inouye Eric D 734885 Clear 29 Exempt On file
West Coast Construction 766497 Clear 27 Insured On file
A & B Plumbing & Backflow 768141 Clear 27 Insured On file
Cabinets USA 778156 Clear 26 Exempt On file
Chris' Plumbing INC 795046 Clear 25 Insured On file
Westates Mechanical Corporation INC 828590 Clear 22 Insured On file
Garzac Plumbing 830368 Clear 22 Insured On file
Unhique Construction INC 850151 Clear 21 Insured On file
Kbeck Plumbing & Heating INC 868785 Clear 20 Insured On file
Siever M D General Contractor 904564 Clear 19 Exempt On file
Baires Construction INC 908251 Clear 18 Insured On file
Rooter - Tec Plumbing 911138 Clear 18 Insured On file
A A A A Generator Services INC 914864 Clear 18 Insured On file
Simply Plumbing and Rooter 923441 Clear 18 Exempt On file
Carrillo J Plumbing and Drains 938525 Clear 17 Exempt On file
Lil Rooter 967420 Clear 15 Insured On file
Dwp Plumbing 1002160 Clear 11 Exempt On file
Dng Plumbing INC 1012685 Clear 10 Insured On file
Monarch Plumbing and Rooter INC 1014475 Clear 10 Insured On file
Golden 1 Plumbing 1026405 Clear 9 Exempt On file
Detail Drywall & Stucco INC 1032948 Clear 9 Insured On file
Plumbing 1 Builder's INC 1034873 Clear 8 Insured On file
Grandview Builder INC 1037325 Clear 8 Insured On file
On R Way Plumbing LLC 1036700 Clear 8 Exempt On file
Aqua Stat Plumbing INC 1042922 Clear 8 Exempt On file
Bay Bejar Plumbing 1044477 Clear 8 Exempt On file
All Clear Plumbing and Drain 1048016 Clear 7 Insured On file
Paco Plumbing & Rooter 1050803 Clear 7 Exempt On file
Flores Plumbing 1060881 Clear 6 Exempt On file
George Plumbing Services INC 1066800 Clear 6 Insured On file
Excalibur Rooter and Plumbing INC 1072119 Clear 5 Insured On file
Ng Rooter and Plumbing INC 1075093 Clear 5 Insured On file
A D Melchner General Engineering 1077314 Clear 5 Insured On file
Absolute Pro Plumbing INC 1080649 Clear 5 Insured On file
Hayward Plumbing & Rooter 1083284 Clear 5 Exempt On file
Service # 1 Plumbing INC 1088697 Clear 4 Insured On file
Progressive Plumbing & Rooters 1092946 Clear 4 Exempt On file
Alca-Line Construction INC 1096031 Clear 4 Insured On file
Facilities Plumbing & Drain 1097669 Clear 4 Insured On file

See all 85 plumbers in Hayward

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 Hayward?

CSLB's current public file lists 85 plumbers with a Hayward mailing address. 81 have a Clear status, and 85.9% 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?

CSLB issues the C-36 Plumbing Contractor classification for this work. In Alameda County, 95.3% of Hayward's holders are Clear right now. The license requirement starts at $1,000 per job (the minor-work 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 Hayward plumbers, 43.5% are exempt (no employees), 55.3% insured and 1.2% without current coverage. Verify a policy with CSLB's insurer search (step by step).

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