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Licensed plumbers in Walnut, CA (C-36)
14 new licenses for Plumbing (C-36) across SoCal
Issued Oct 16 – Oct 22, 2026.
See all licensed plumbers in Los Angeles County, by city.
Quick facts
How many licensed plumbers are in Walnut, CA?
20 plumbers with a California CSLB license list a business address in Walnut, CA. 19 of them have an active license in good standing (CSLB data as of 10/22/2026).
How many plumbers in Walnut, CA have a license problem right now?
1 is not in good standing right now. 2 active licenses expire within 90 days. Each listing below shows the status and a plain-English OK-to-hire verdict.
How do I check if a plumber is licensed?
Search the business name or license number on LicenseWatch CA to see license status, bond and workers' comp in one place, then confirm on the CSLB website before you sign a contract. In California, work over $1,000 in labor and materials requires a licensed contractor.
Featured spot open for plumbers in WalnutOne licensed plumber can sit above this list, labeled sponsored. Founding rate $1.90 a month. See what you get
Claim this spot| Business | License | Status | Expires |
|---|---|---|---|
| A Drain Doctor | 803591 | Active | 01/31/2028 |
| Bruce's Plumbing Service | 904642 | Active | 10/31/2027 |
| Christopher Bonilla | 1002675 | Active | 04/30/2027 |
| David Li | 1111958 | Active | 10/31/2027 |
| Dong Tsair Hwang | 697328 | Active | 10/31/2026 |
| Expert HVAC Service Inc | 1115612 | Active | 01/31/2028 |
| G Phillips Plumbing | 526195 | Active | 03/31/2027 |
| John The Plumber | 669082 | Active | 04/30/2027 |
| KP Plumbing Inc | 1044093 | Active | 05/31/2028 |
| La Habra Fire Protection And Plumbing | 757985 | Active | 01/31/2027 |
| Maximum Mechanical Plumbing | 1051536 | Active | 03/31/2027 |
| Maximus Builders Inc | 1000594 | Active | 01/31/2027 |
| Michael Joellson | 957335 | Active | 04/30/2027 |
| Mtec | 873492 | Active | 12/31/2026 |
| Peacecal Plumbing | 1144632 | Active | 10/31/2027 |
| Pomona Valley Plumbing Heating Air Conditioning Co Inc | 1019549 | Active | 10/31/2028 |
| Scott Chien | 1089712 | Active | 04/30/2028 |
| United Riggers & Erectors Inc | 245451 | Active | 03/31/2028 |
| Walnut Plumbing | 1005582 | Active | 07/31/2027 |
| Select Plumbing | 816005 | Contr Bond Susp | 12/31/2026 |
New and lapsed SoCal licenses, every Monday
New licenses, expirations and workers' comp lapses across five counties. One short email a week.