Licensed pipeline contractors in Southern California
Every CSLB C-34 license with a business address in Los Angeles, Orange, San Diego, Riverside or San Bernardino County, from CSLB data updated 10/22/2026.
By county
Los Angeles County has the most, 64 of 254 (25.2%).
| County | Licenses | Active | Share of SoCal |
|---|---|---|---|
| Los Angeles County | 64 | 62 | 25.2% |
| Riverside County | 63 | 63 | 24.8% |
| Orange County | 54 | 54 | 21.3% |
| San Bernardino County | 47 | 45 | 18.5% |
| San Diego County | 26 | 26 | 10.2% |
Pipeline (C-34) by city
- Riverside 16
- Orange 8
- Yucaipa 7
- Long Beach 6
- Moreno Valley 6
- Perris 5
- Yorba Linda 5
- Redlands 5
- Santa Ana 4
- Anaheim 4
- San Bernardino 4
- Temecula 4
- El Cajon 4
- Upland 4
- Lancaster 4
- Irvine 4
- Azusa 3
- Poway 3
- Los Alamitos 3
- Hemet 3
- Pasadena 3
- San Diego 3
- Cypress 3
- Corona 3
- Chino 3
- Gardena 3
- Carlsbad 3
- Big Bear Lake 3
- Apple Valley 3
- Costa Mesa 2
- Northridge 2
- Victorville 2
- Lake Elsinore 2
- Calimesa 2
- Palmdale 2
- Fontana 2
- San Dimas 2
- Huntington Beach 2
- San Jacinto 2
- Valley Center 2
- North Hollywood 2
- Menifee 2
- Pomona 2
- Coachella 2
- Fullerton 2
- Indio 2
- Burbank 2
- Los Angeles 2
- Ontario 2
- Mission Hills 2
- Big Bear City 2
- Santee 2
- Mira Loma 2
- Baldwin Park 2
- Hesperia 2
- San Pedro 2
- Buena Park 2
- Chula Vista 2
- Montebello 2
No new licenses for Pipeline (C-34) across SoCal
None issued Oct 16 – Oct 22, 2026.
Quick facts
How many licensed pipeline contractors are in Southern California?
254 pipeline contractors with a California CSLB license list a business address in Southern California. 250 of them have an active license in good standing (CSLB data as of 10/22/2026).
How many pipeline contractors in Southern California have a license problem right now?
4 are not in good standing right now, including 4 suspended for missing workers' comp. 9 active licenses expire within 90 days. Each county and city list linked here shows the status and a plain-English OK-to-hire verdict.
How do I check if a pipeline contractor 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.
New and lapsed SoCal licenses, every Monday
New licenses, expirations and workers' comp lapses across five counties. One short email a week.