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Licensed prefabricated equipment contractors in Southern California
Every CSLB D-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, 192 of 644 (29.8%).
| County | Licenses | Active | Share of SoCal |
|---|---|---|---|
| Los Angeles County | 192 | 183 | 29.8% |
| San Diego County | 154 | 145 | 23.9% |
| Orange County | 135 | 129 | 21.0% |
| Riverside County | 85 | 80 | 13.2% |
| San Bernardino County | 78 | 74 | 12.1% |
Prefabricated Equipment (D-34) by city
- San Diego 48
- Riverside 20
- Anaheim 18
- Chula Vista 16
- Los Angeles 15
- Rancho Cucamonga 14
- Orange 13
- Fontana 12
- Santa Ana 11
- Garden Grove 10
- Escondido 10
- San Marcos 9
- Lakeside 9
- Ontario 9
- El Cajon 9
- Tustin 9
- Santa Clarita 8
- Irvine 8
- Valencia 8
- Placentia 8
- Temecula 7
- Huntington Beach 7
- Fullerton 7
- Torrance 7
- Murrieta 7
- Long Beach 7
- Chino 7
- La Mesa 7
- Whittier 6
- Pasadena 6
- Corona 6
- Vista 6
- Oceanside 6
- North Hollywood 6
- Poway 6
- Costa Mesa 5
- Sun Valley 5
- Fountain Valley 5
- Upland 5
- Gardena 5
- Hesperia 4
- Rancho Santa Margarita 4
- Pico Rivera 4
- Laguna Hills 4
- Moreno Valley 4
- Menifee 4
- Norco 4
- Pomona 4
- Lakewood 4
- San Bernardino 4
- Westminster 4
- Beaumont 4
- Alta Loma 4
- Winchester 4
- Spring Valley 4
- Burbank 4
- Carlsbad 4
- Montclair 4
- Compton 3
- West Covina 3
1 new license for Prefabricated Equipment (D-34) across SoCal
Issued Oct 16 – Oct 22, 2026.
Quick facts
How many licensed prefabricated equipment contractors are in Southern California?
644 prefabricated equipment contractors with a California CSLB license list a business address in Southern California. 611 of them have an active license in good standing (CSLB data as of 10/22/2026).
How many prefabricated equipment contractors in Southern California have a license problem right now?
33 are not in good standing right now, including 7 suspended for missing workers' comp. 34 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 prefabricated equipment 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.