Licensed plumbers in Southern California
Every CSLB C-36 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, 4,867 of 10,188 (47.8%).
| County | Licenses | Active | Share of SoCal |
|---|---|---|---|
| Los Angeles County | 4,867 | 4,647 | 47.8% |
| San Diego County | 1,733 | 1,660 | 17.0% |
| Orange County | 1,546 | 1,481 | 15.2% |
| Riverside County | 1,255 | 1,199 | 12.3% |
| San Bernardino County | 787 | 755 | 7.7% |
Plumbing (C-36) by city
- Los Angeles 691
- San Diego 512
- Riverside 218
- Anaheim 191
- Glendale 166
- Long Beach 157
- Van Nuys 140
- El Cajon 136
- Chula Vista 135
- Burbank 133
- Escondido 133
- Huntington Beach 123
- Corona 120
- Torrance 119
- Santa Ana 108
- Orange 102
- Whittier 102
- Sylmar 100
- Oceanside 99
- North Hollywood 97
- Garden Grove 91
- Murrieta 88
- Irvine 87
- Vista 87
- Lancaster 85
- Temecula 81
- Granada Hills 81
- Northridge 75
- Pasadena 74
- Costa Mesa 72
- Rancho Cucamonga 71
- Palmdale 70
- San Clemente 69
- Fullerton 64
- Covina 61
- Gardena 61
- Menifee 60
- Sun Valley 59
- San Bernardino 59
- Downey 57
- Carlsbad 57
- Woodland Hills 57
- Moreno Valley 56
- Fontana 55
- Santee 55
- Santa Clarita 54
- Palm Desert 53
- Lake Elsinore 53
- Sherman Oaks 53
- Perris 53
- Reseda 51
- San Marcos 51
- Inglewood 49
- Canyon Country 49
- Ontario 48
- Spring Valley 48
- Mission Viejo 48
- Chatsworth 47
- Hemet 47
- Redondo Beach 47
14 new licenses for Plumbing (C-36) across SoCal
Issued Oct 16 – Oct 22, 2026.
Quick facts
How many licensed plumbers are in Southern California?
10,188 plumbers with a California CSLB license list a business address in Southern California. 9,742 of them have an active license in good standing (CSLB data as of 10/22/2026).
How many plumbers in Southern California have a license problem right now?
446 are not in good standing right now, including 102 suspended for missing workers' comp. 748 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 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.
New and lapsed SoCal licenses, every Monday
New licenses, expirations and workers' comp lapses across five counties. One short email a week.