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Licensed plumbers in Walnut, CA
13 plumbing contractors with a CSLB C-36 license list a business address in Walnut (Los Angeles County). A listing is not an endorsement.
Guides: Water heater installation in California · How to hire a plumber in California · What a C-36 plumbing license covers
Listings are CSLB C-36 Plumbing licences in the file downloaded November 4, 2026. Confirm a license is current on the CSLB license check before hiring.
| Business | Phone | License # | Expires |
|---|---|---|---|
| A Drain Doctor | (626) 332-9984 | 803591 | 01/31/2028 |
| Bruce's Plumbing Service | (714) 905-4654 | 904642 | 10/31/2027 |
| Christopher Bonilla | (562) 686-1110 | 1002675 | 04/30/2027 |
| David Li | (702) 660-1888 | 1111958 | 10/31/2027 |
| G Phillips Plumbing | (626) 523-4803 | 526195 | 03/31/2027 |
| John The Plumber | (909) 210-5761 | 669082 | 04/30/2027 |
| KP Plumbing Inc. | (909) 568-8607 | 1044093 | 05/31/2028 |
| LA Habra Fire Protection And Plumbing | (626) 839-8082 | 757985 | 01/31/2027 |
| Maximum Mechanical Plumbing | (213) 414-8529 | 1051536 | 03/31/2027 |
| Michael Joellson | (909) 263-9608 | 957335 | 04/30/2027 |
| Peacecal Plumbing | (626) 536-9991 | 1144632 | 10/31/2027 |
| Pomona Valley Plumbing Heating Air Conditioning Co. Inc. | (909) 326-6101 | 1019549 | 10/31/2028 |
| Walnut Plumbing | (626) 833-4446 | 1005582 | 07/31/2027 |