# Licensed fire protection companies in California

2,107 contractors based in California hold an active California CSLB C-16 Fire Protection Contractor license, as of October 24, 2026.

California contractors who lay out, fabricate and install fire protection systems (sprinklers and fixed suppression systems) must hold a CSLB C-16 Fire Protection Contractor license. C-16 does not cover electrical fire alarm systems, which are licensed under other classifications.

California listings cover CSLB C-16 Fire Protection contractors (sprinkler and fixed suppression systems). Fire alarm and portable extinguisher companies are not yet included.

## Cities

- [San Francisco](https://plumbregistry.com/fire-protection/california/san-francisco/) — 96 companies
- [Los Angeles](https://plumbregistry.com/fire-protection/california/los-angeles/) — 61 companies
- [Glendale](https://plumbregistry.com/fire-protection/california/glendale/) — 47 companies
- [San Jose](https://plumbregistry.com/fire-protection/california/san-jose/) — 35 companies
- [Sacramento](https://plumbregistry.com/fire-protection/california/sacramento/) — 31 companies
- [Bakersfield](https://plumbregistry.com/fire-protection/california/bakersfield/) — 31 companies
- [Anaheim](https://plumbregistry.com/fire-protection/california/anaheim/) — 25 companies
- [Burbank](https://plumbregistry.com/fire-protection/california/burbank/) — 23 companies
- [San Diego](https://plumbregistry.com/fire-protection/california/san-diego/) — 22 companies
- [Oakland](https://plumbregistry.com/fire-protection/california/oakland/) — 22 companies
- [Santa Rosa](https://plumbregistry.com/fire-protection/california/santa-rosa/) — 21 companies
- [Fresno](https://plumbregistry.com/fire-protection/california/fresno/) — 21 companies
- [Van Nuys](https://plumbregistry.com/fire-protection/california/van-nuys/) — 18 companies
- [Irvine](https://plumbregistry.com/fire-protection/california/irvine/) — 17 companies
- [Ventura](https://plumbregistry.com/fire-protection/california/ventura/) — 16 companies
- [Riverside](https://plumbregistry.com/fire-protection/california/riverside/) — 16 companies
- [Huntington Beach](https://plumbregistry.com/fire-protection/california/huntington-beach/) — 15 companies
- [Livermore](https://plumbregistry.com/fire-protection/california/livermore/) — 15 companies
- [Santa Ana](https://plumbregistry.com/fire-protection/california/santa-ana/) — 15 companies
- [Corona](https://plumbregistry.com/fire-protection/california/corona/) — 14 companies
- [El Cajon](https://plumbregistry.com/fire-protection/california/el-cajon/) — 14 companies
- [Rancho Cucamonga](https://plumbregistry.com/fire-protection/california/rancho-cucamonga/) — 13 companies
- [Fremont](https://plumbregistry.com/fire-protection/california/fremont/) — 13 companies
- [Pleasanton](https://plumbregistry.com/fire-protection/california/pleasanton/) — 13 companies
- [Concord](https://plumbregistry.com/fire-protection/california/concord/) — 12 companies
- [Ontario](https://plumbregistry.com/fire-protection/california/ontario/) — 12 companies
- [Woodland Hills](https://plumbregistry.com/fire-protection/california/woodland-hills/) — 12 companies
- [Canoga Park](https://plumbregistry.com/fire-protection/california/canoga-park/) — 11 companies
- [San Bernardino](https://plumbregistry.com/fire-protection/california/san-bernardino/) — 11 companies
- [Orange](https://plumbregistry.com/fire-protection/california/orange/) — 11 companies
- [Tracy](https://plumbregistry.com/fire-protection/california/tracy/) — 11 companies
- [Torrance](https://plumbregistry.com/fire-protection/california/torrance/) — 11 companies
- [Simi Valley](https://plumbregistry.com/fire-protection/california/simi-valley/) — 11 companies
- [Whittier](https://plumbregistry.com/fire-protection/california/whittier/) — 11 companies
- [Sun Valley](https://plumbregistry.com/fire-protection/california/sun-valley/) — 10 companies
- [Redding](https://plumbregistry.com/fire-protection/california/redding/) — 10 companies
- [Pasadena](https://plumbregistry.com/fire-protection/california/pasadena/) — 10 companies
- [Long Beach](https://plumbregistry.com/fire-protection/california/long-beach/) — 10 companies
- [Fontana](https://plumbregistry.com/fire-protection/california/fontana/) — 10 companies
- [Chino](https://plumbregistry.com/fire-protection/california/chino/) — 10 companies
- [Hayward](https://plumbregistry.com/fire-protection/california/hayward/) — 10 companies
- [Daly City](https://plumbregistry.com/fire-protection/california/daly-city/) — 10 companies
- [Rocklin](https://plumbregistry.com/fire-protection/california/rocklin/) — 10 companies
- [San Clemente](https://plumbregistry.com/fire-protection/california/san-clemente/) — 10 companies
- [Santa Fe Springs](https://plumbregistry.com/fire-protection/california/santa-fe-springs/) — 9 companies
- [Salinas](https://plumbregistry.com/fire-protection/california/salinas/) — 9 companies
- [Escondido](https://plumbregistry.com/fire-protection/california/escondido/) — 9 companies
- [Lake Elsinore](https://plumbregistry.com/fire-protection/california/lake-elsinore/) — 9 companies
- [Sylmar](https://plumbregistry.com/fire-protection/california/sylmar/) — 9 companies
- [Stockton](https://plumbregistry.com/fire-protection/california/stockton/) — 9 companies
- [San Leandro](https://plumbregistry.com/fire-protection/california/san-leandro/) — 9 companies
- [Murrieta](https://plumbregistry.com/fire-protection/california/murrieta/) — 9 companies
- [Brea](https://plumbregistry.com/fire-protection/california/brea/) — 9 companies
- [Petaluma](https://plumbregistry.com/fire-protection/california/petaluma/) — 9 companies
- [Moreno Valley](https://plumbregistry.com/fire-protection/california/moreno-valley/) — 9 companies
- [Temecula](https://plumbregistry.com/fire-protection/california/temecula/) — 9 companies
- [Lancaster](https://plumbregistry.com/fire-protection/california/lancaster/) — 8 companies
- [La Crescenta](https://plumbregistry.com/fire-protection/california/la-crescenta/) — 8 companies
- [Tarzana](https://plumbregistry.com/fire-protection/california/tarzana/) — 8 companies
- [Santee](https://plumbregistry.com/fire-protection/california/santee/) — 8 companies
- [La Habra](https://plumbregistry.com/fire-protection/california/la-habra/) — 8 companies
- [Roseville](https://plumbregistry.com/fire-protection/california/roseville/) — 8 companies
- [North Hollywood](https://plumbregistry.com/fire-protection/california/north-hollywood/) — 8 companies
- [Garden Grove](https://plumbregistry.com/fire-protection/california/garden-grove/) — 8 companies
- [Encino](https://plumbregistry.com/fire-protection/california/encino/) — 8 companies
- [Auburn](https://plumbregistry.com/fire-protection/california/auburn/) — 8 companies
- [Santa Clara](https://plumbregistry.com/fire-protection/california/santa-clara/) — 7 companies
- [Benicia](https://plumbregistry.com/fire-protection/california/benicia/) — 7 companies
- [Santa Cruz](https://plumbregistry.com/fire-protection/california/santa-cruz/) — 7 companies
- [Fairfield](https://plumbregistry.com/fire-protection/california/fairfield/) — 7 companies
- [Tustin](https://plumbregistry.com/fire-protection/california/tustin/) — 7 companies
- [Visalia](https://plumbregistry.com/fire-protection/california/visalia/) — 7 companies
- [Gilroy](https://plumbregistry.com/fire-protection/california/gilroy/) — 7 companies
- [Arcadia](https://plumbregistry.com/fire-protection/california/arcadia/) — 7 companies
- [San Luis Obispo](https://plumbregistry.com/fire-protection/california/san-luis-obispo/) — 7 companies
- [Fullerton](https://plumbregistry.com/fire-protection/california/fullerton/) — 7 companies
- [Menifee](https://plumbregistry.com/fire-protection/california/menifee/) — 7 companies
- [Granada Hills](https://plumbregistry.com/fire-protection/california/granada-hills/) — 7 companies
- [Sherman Oaks](https://plumbregistry.com/fire-protection/california/sherman-oaks/) — 7 companies
- [Yorba Linda](https://plumbregistry.com/fire-protection/california/yorba-linda/) — 7 companies
- [San Mateo](https://plumbregistry.com/fire-protection/california/san-mateo/) — 7 companies
- [Clovis](https://plumbregistry.com/fire-protection/california/clovis/) — 7 companies
- [San Juan Capistrano](https://plumbregistry.com/fire-protection/california/san-juan-capistrano/) — 7 companies
- [Apple Valley](https://plumbregistry.com/fire-protection/california/apple-valley/) — 7 companies
- [Santa Barbara](https://plumbregistry.com/fire-protection/california/santa-barbara/) — 7 companies
- [Vista](https://plumbregistry.com/fire-protection/california/vista/) — 7 companies
- [North Hills](https://plumbregistry.com/fire-protection/california/north-hills/) — 6 companies
- [Atascadero](https://plumbregistry.com/fire-protection/california/atascadero/) — 6 companies
- [Novato](https://plumbregistry.com/fire-protection/california/novato/) — 6 companies
- [Martinez](https://plumbregistry.com/fire-protection/california/martinez/) — 6 companies
- [Lodi](https://plumbregistry.com/fire-protection/california/lodi/) — 6 companies
- [Palmdale](https://plumbregistry.com/fire-protection/california/palmdale/) — 6 companies
- [Canyon Country](https://plumbregistry.com/fire-protection/california/canyon-country/) — 6 companies
- [Elk Grove](https://plumbregistry.com/fire-protection/california/elk-grove/) — 6 companies
- [Brentwood](https://plumbregistry.com/fire-protection/california/brentwood/) — 6 companies
- [Valencia](https://plumbregistry.com/fire-protection/california/valencia/) — 6 companies
- [Hesperia](https://plumbregistry.com/fire-protection/california/hesperia/) — 6 companies
- [Lake Forest](https://plumbregistry.com/fire-protection/california/lake-forest/) — 6 companies
- [Sunland](https://plumbregistry.com/fire-protection/california/sunland/) — 6 companies
- [Sonoma](https://plumbregistry.com/fire-protection/california/sonoma/) — 6 companies
- [Redlands](https://plumbregistry.com/fire-protection/california/redlands/) — 6 companies
- [Foster City](https://plumbregistry.com/fire-protection/california/foster-city/) — 6 companies
- [Oxnard](https://plumbregistry.com/fire-protection/california/oxnard/) — 6 companies
- [South San Francisco](https://plumbregistry.com/fire-protection/california/south-san-francisco/) — 6 companies
- [Richmond](https://plumbregistry.com/fire-protection/california/richmond/) — 6 companies
- [Rancho Cordova](https://plumbregistry.com/fire-protection/california/rancho-cordova/) — 6 companies
- [Newport Beach](https://plumbregistry.com/fire-protection/california/newport-beach/) — 6 companies
- [Dublin](https://plumbregistry.com/fire-protection/california/dublin/) — 6 companies
- [Chico](https://plumbregistry.com/fire-protection/california/chico/) — 6 companies
- [Thousand Oaks](https://plumbregistry.com/fire-protection/california/thousand-oaks/) — 6 companies
- [Redondo Beach](https://plumbregistry.com/fire-protection/california/redondo-beach/) — 6 companies
- [Napa](https://plumbregistry.com/fire-protection/california/napa/) — 6 companies
- [Northridge](https://plumbregistry.com/fire-protection/california/northridge/) — 5 companies
- [San Gabriel](https://plumbregistry.com/fire-protection/california/san-gabriel/) — 5 companies
- [Reseda](https://plumbregistry.com/fire-protection/california/reseda/) — 5 companies
- [Montclair](https://plumbregistry.com/fire-protection/california/montclair/) — 5 companies
- [Milpitas](https://plumbregistry.com/fire-protection/california/milpitas/) — 5 companies
- [Eureka](https://plumbregistry.com/fire-protection/california/eureka/) — 5 companies
- [Vallejo](https://plumbregistry.com/fire-protection/california/vallejo/) — 5 companies
- [Millbrae](https://plumbregistry.com/fire-protection/california/millbrae/) — 5 companies
- [Paso Robles](https://plumbregistry.com/fire-protection/california/paso-robles/) — 5 companies
- [Pittsburg](https://plumbregistry.com/fire-protection/california/pittsburg/) — 5 companies
- [Arleta](https://plumbregistry.com/fire-protection/california/arleta/) — 5 companies
- [Windsor](https://plumbregistry.com/fire-protection/california/windsor/) — 5 companies
- [Downey](https://plumbregistry.com/fire-protection/california/downey/) — 5 companies
- [Alhambra](https://plumbregistry.com/fire-protection/california/alhambra/) — 5 companies
- [Gardena](https://plumbregistry.com/fire-protection/california/gardena/) — 5 companies
- [West Covina](https://plumbregistry.com/fire-protection/california/west-covina/) — 5 companies
- [Arroyo Grande](https://plumbregistry.com/fire-protection/california/arroyo-grande/) — 5 companies
- [Diamond Bar](https://plumbregistry.com/fire-protection/california/diamond-bar/) — 5 companies
- [Oakdale](https://plumbregistry.com/fire-protection/california/oakdale/) — 5 companies
- [Copperopolis](https://plumbregistry.com/fire-protection/california/copperopolis/) — 5 companies
- [San Rafael](https://plumbregistry.com/fire-protection/california/san-rafael/) — 5 companies
- [Glendora](https://plumbregistry.com/fire-protection/california/glendora/) — 5 companies
- [Covina](https://plumbregistry.com/fire-protection/california/covina/) — 5 companies
- [La Puente](https://plumbregistry.com/fire-protection/california/la-puente/) — 5 companies
- [Cypress](https://plumbregistry.com/fire-protection/california/cypress/) — 5 companies
- [Granite Bay](https://plumbregistry.com/fire-protection/california/granite-bay/) — 4 companies
- [Union City](https://plumbregistry.com/fire-protection/california/union-city/) — 4 companies
- [Woodland](https://plumbregistry.com/fire-protection/california/woodland/) — 4 companies
- [American Canyon](https://plumbregistry.com/fire-protection/california/american-canyon/) — 4 companies
- [La Verne](https://plumbregistry.com/fire-protection/california/la-verne/) — 4 companies
- [Norco](https://plumbregistry.com/fire-protection/california/norco/) — 4 companies
- [Turlock](https://plumbregistry.com/fire-protection/california/turlock/) — 4 companies
- [Palo Alto](https://plumbregistry.com/fire-protection/california/palo-alto/) — 4 companies
- [El Dorado Hills](https://plumbregistry.com/fire-protection/california/el-dorado-hills/) — 4 companies
- [Oceanside](https://plumbregistry.com/fire-protection/california/oceanside/) — 4 companies
- [La Mirada](https://plumbregistry.com/fire-protection/california/la-mirada/) — 4 companies
- [Tujunga](https://plumbregistry.com/fire-protection/california/tujunga/) — 4 companies
- [Panorama City](https://plumbregistry.com/fire-protection/california/panorama-city/) — 4 companies
- [Montrose](https://plumbregistry.com/fire-protection/california/montrose/) — 4 companies
- [Yucca Valley](https://plumbregistry.com/fire-protection/california/yucca-valley/) — 4 companies
- [Antioch](https://plumbregistry.com/fire-protection/california/antioch/) — 4 companies
- [Studio City](https://plumbregistry.com/fire-protection/california/studio-city/) — 4 companies
- [Alta Loma](https://plumbregistry.com/fire-protection/california/alta-loma/) — 4 companies
- [Berkeley](https://plumbregistry.com/fire-protection/california/berkeley/) — 4 companies
- [Agoura Hills](https://plumbregistry.com/fire-protection/california/agoura-hills/) — 4 companies
- [Fallbrook](https://plumbregistry.com/fire-protection/california/fallbrook/) — 4 companies
- [Placentia](https://plumbregistry.com/fire-protection/california/placentia/) — 4 companies
- [Signal Hill](https://plumbregistry.com/fire-protection/california/signal-hill/) — 4 companies
- [Pomona](https://plumbregistry.com/fire-protection/california/pomona/) — 4 companies
- [Montebello](https://plumbregistry.com/fire-protection/california/montebello/) — 4 companies
- [Chino Hills](https://plumbregistry.com/fire-protection/california/chino-hills/) — 4 companies
- [Pacifica](https://plumbregistry.com/fire-protection/california/pacifica/) — 4 companies
- [Modesto](https://plumbregistry.com/fire-protection/california/modesto/) — 4 companies
- [San Bruno](https://plumbregistry.com/fire-protection/california/san-bruno/) — 4 companies
- [Redwood City](https://plumbregistry.com/fire-protection/california/redwood-city/) — 4 companies
- [Aliso Viejo](https://plumbregistry.com/fire-protection/california/aliso-viejo/) — 4 companies
- [Wildomar](https://plumbregistry.com/fire-protection/california/wildomar/) — 4 companies
- [Palm Springs](https://plumbregistry.com/fire-protection/california/palm-springs/) — 4 companies
- [Sloughhouse](https://plumbregistry.com/fire-protection/california/sloughhouse/) — 4 companies
- [Norwalk](https://plumbregistry.com/fire-protection/california/norwalk/) — 4 companies
- [Healdsburg](https://plumbregistry.com/fire-protection/california/healdsburg/) — 4 companies
- [City Of Industry](https://plumbregistry.com/fire-protection/california/city-of-industry/) — 4 companies
- [Hemet](https://plumbregistry.com/fire-protection/california/hemet/) — 4 companies
- [Hacienda Heights](https://plumbregistry.com/fire-protection/california/hacienda-heights/) — 4 companies
- [West Hills](https://plumbregistry.com/fire-protection/california/west-hills/) — 4 companies
- [Los Gatos](https://plumbregistry.com/fire-protection/california/los-gatos/) — 4 companies
- [South El Monte](https://plumbregistry.com/fire-protection/california/south-el-monte/) — 4 companies
- [Folsom](https://plumbregistry.com/fire-protection/california/folsom/) — 4 companies
- [Santa Clarita](https://plumbregistry.com/fire-protection/california/santa-clarita/) — 4 companies
- [Walnut Creek](https://plumbregistry.com/fire-protection/california/walnut-creek/) — 4 companies
- [Laguna Niguel](https://plumbregistry.com/fire-protection/california/laguna-niguel/) — 4 companies
- [Rosemead](https://plumbregistry.com/fire-protection/california/rosemead/) — 3 companies
- [Goleta](https://plumbregistry.com/fire-protection/california/goleta/) — 3 companies
- [Westminster](https://plumbregistry.com/fire-protection/california/westminster/) — 3 companies
- [Big Bear City](https://plumbregistry.com/fire-protection/california/big-bear-city/) — 3 companies
- [Pacoima](https://plumbregistry.com/fire-protection/california/pacoima/) — 3 companies
- [Wilton](https://plumbregistry.com/fire-protection/california/wilton/) — 3 companies
- [Spring Valley](https://plumbregistry.com/fire-protection/california/spring-valley/) — 3 companies
- [Compton](https://plumbregistry.com/fire-protection/california/compton/) — 3 companies
- [Castro Valley](https://plumbregistry.com/fire-protection/california/castro-valley/) — 3 companies
- [Vacaville](https://plumbregistry.com/fire-protection/california/vacaville/) — 3 companies
- [Canyon Lake](https://plumbregistry.com/fire-protection/california/canyon-lake/) — 3 companies
- [Lincoln](https://plumbregistry.com/fire-protection/california/lincoln/) — 3 companies
- [Yucaipa](https://plumbregistry.com/fire-protection/california/yucaipa/) — 3 companies
- [Brisbane](https://plumbregistry.com/fire-protection/california/brisbane/) — 3 companies
- [Ripon](https://plumbregistry.com/fire-protection/california/ripon/) — 3 companies
- [Santa Paula](https://plumbregistry.com/fire-protection/california/santa-paula/) — 3 companies
- [Rohnert Park](https://plumbregistry.com/fire-protection/california/rohnert-park/) — 3 companies
- [Scotts Valley](https://plumbregistry.com/fire-protection/california/scotts-valley/) — 3 companies
- [Lynwood](https://plumbregistry.com/fire-protection/california/lynwood/) — 3 companies
- [Baldwin Park](https://plumbregistry.com/fire-protection/california/baldwin-park/) — 3 companies
- [Orinda](https://plumbregistry.com/fire-protection/california/orinda/) — 3 companies
- [Phelan](https://plumbregistry.com/fire-protection/california/phelan/) — 3 companies
- [Calexico](https://plumbregistry.com/fire-protection/california/calexico/) — 3 companies
- [Azusa](https://plumbregistry.com/fire-protection/california/azusa/) — 3 companies
- [Grass Valley](https://plumbregistry.com/fire-protection/california/grass-valley/) — 3 companies
- [Upland](https://plumbregistry.com/fire-protection/california/upland/) — 3 companies
- [Carmichael](https://plumbregistry.com/fire-protection/california/carmichael/) — 3 companies
- [Nipomo](https://plumbregistry.com/fire-protection/california/nipomo/) — 3 companies
- [Mission Viejo](https://plumbregistry.com/fire-protection/california/mission-viejo/) — 3 companies
- [Coarsegold](https://plumbregistry.com/fire-protection/california/coarsegold/) — 3 companies
- [Lawndale](https://plumbregistry.com/fire-protection/california/lawndale/) — 3 companies
- [Poway](https://plumbregistry.com/fire-protection/california/poway/) — 3 companies
- [Calabasas](https://plumbregistry.com/fire-protection/california/calabasas/) — 3 companies
- [Loomis](https://plumbregistry.com/fire-protection/california/loomis/) — 3 companies
- [Westlake Village](https://plumbregistry.com/fire-protection/california/westlake-village/) — 3 companies
- [Newark](https://plumbregistry.com/fire-protection/california/newark/) — 3 companies
- [Desert Hot Springs](https://plumbregistry.com/fire-protection/california/desert-hot-springs/) — 3 companies
- [Crescent City](https://plumbregistry.com/fire-protection/california/crescent-city/) — 3 companies
- [El Monte](https://plumbregistry.com/fire-protection/california/el-monte/) — 3 companies
- [Lakeside](https://plumbregistry.com/fire-protection/california/lakeside/) — 3 companies
- [Carlsbad](https://plumbregistry.com/fire-protection/california/carlsbad/) — 3 companies
- [Corte Madera](https://plumbregistry.com/fire-protection/california/corte-madera/) — 3 companies
- [Harbor City](https://plumbregistry.com/fire-protection/california/harbor-city/) — 3 companies
- [Highland](https://plumbregistry.com/fire-protection/california/highland/) — 3 companies
- [Madera](https://plumbregistry.com/fire-protection/california/madera/) — 3 companies
- [Yuba City](https://plumbregistry.com/fire-protection/california/yuba-city/) — 3 companies
- [San Fernando](https://plumbregistry.com/fire-protection/california/san-fernando/) — 3 companies
- [Walnut](https://plumbregistry.com/fire-protection/california/walnut/) — 3 companies
- [Irwindale](https://plumbregistry.com/fire-protection/california/irwindale/) — 3 companies
- [San Jacinto](https://plumbregistry.com/fire-protection/california/san-jacinto/) — 3 companies
- [Monterey](https://plumbregistry.com/fire-protection/california/monterey/) — 3 companies
- [Perris](https://plumbregistry.com/fire-protection/california/perris/) — 3 companies
- [Hawthorne](https://plumbregistry.com/fire-protection/california/hawthorne/) — 3 companies
- [La Canada](https://plumbregistry.com/fire-protection/california/la-canada/) — 2 companies
- [Cupertino](https://plumbregistry.com/fire-protection/california/cupertino/) — 2 companies
- [Cameron Park](https://plumbregistry.com/fire-protection/california/cameron-park/) — 2 companies
- [Santa Monica](https://plumbregistry.com/fire-protection/california/santa-monica/) — 2 companies
- [Chatsworth](https://plumbregistry.com/fire-protection/california/chatsworth/) — 2 companies
- [Oakley](https://plumbregistry.com/fire-protection/california/oakley/) — 2 companies
- [Patterson](https://plumbregistry.com/fire-protection/california/patterson/) — 2 companies
- [Costa Mesa](https://plumbregistry.com/fire-protection/california/costa-mesa/) — 2 companies
- [Camarillo](https://plumbregistry.com/fire-protection/california/camarillo/) — 2 companies
- [Galt](https://plumbregistry.com/fire-protection/california/galt/) — 2 companies
- [Winnetka](https://plumbregistry.com/fire-protection/california/winnetka/) — 2 companies
- [Sebastopol](https://plumbregistry.com/fire-protection/california/sebastopol/) — 2 companies
- [San Pedro](https://plumbregistry.com/fire-protection/california/san-pedro/) — 2 companies
- [Rowland Heights](https://plumbregistry.com/fire-protection/california/rowland-heights/) — 2 companies
- [Campbell](https://plumbregistry.com/fire-protection/california/campbell/) — 2 companies
- [Manteca](https://plumbregistry.com/fire-protection/california/manteca/) — 2 companies
- [Antelope](https://plumbregistry.com/fire-protection/california/antelope/) — 2 companies
- [Danville](https://plumbregistry.com/fire-protection/california/danville/) — 2 companies
- [Inglewood](https://plumbregistry.com/fire-protection/california/inglewood/) — 2 companies
- [Rancho Santa Margarita](https://plumbregistry.com/fire-protection/california/rancho-santa-margarita/) — 2 companies
- [Victorville](https://plumbregistry.com/fire-protection/california/victorville/) — 2 companies
- [Huntington Park](https://plumbregistry.com/fire-protection/california/huntington-park/) — 2 companies
- [Lake Arrowhead](https://plumbregistry.com/fire-protection/california/lake-arrowhead/) — 2 companies
- [Oakhurst](https://plumbregistry.com/fire-protection/california/oakhurst/) — 2 companies
- [Penngrove](https://plumbregistry.com/fire-protection/california/penngrove/) — 2 companies
- [Emeryville](https://plumbregistry.com/fire-protection/california/emeryville/) — 2 companies
- [So San Francisco](https://plumbregistry.com/fire-protection/california/so-san-francisco/) — 2 companies
- [Taft](https://plumbregistry.com/fire-protection/california/taft/) — 2 companies
- [Reedley](https://plumbregistry.com/fire-protection/california/reedley/) — 2 companies
- [Moorpark](https://plumbregistry.com/fire-protection/california/moorpark/) — 2 companies
- [Carmel](https://plumbregistry.com/fire-protection/california/carmel/) — 2 companies
- [Arcata](https://plumbregistry.com/fire-protection/california/arcata/) — 2 companies
- [Kelseyville](https://plumbregistry.com/fire-protection/california/kelseyville/) — 2 companies
- [San Marino](https://plumbregistry.com/fire-protection/california/san-marino/) — 2 companies
- [Mira Loma](https://plumbregistry.com/fire-protection/california/mira-loma/) — 2 companies
- [Lake Balboa](https://plumbregistry.com/fire-protection/california/lake-balboa/) — 2 companies
- [Commerce](https://plumbregistry.com/fire-protection/california/commerce/) — 2 companies
- [Oroville](https://plumbregistry.com/fire-protection/california/oroville/) — 2 companies
- [San Dimas](https://plumbregistry.com/fire-protection/california/san-dimas/) — 2 companies
- [Paradise](https://plumbregistry.com/fire-protection/california/paradise/) — 2 companies
- [Indio](https://plumbregistry.com/fire-protection/california/indio/) — 2 companies
- [Rolling Hills Estates](https://plumbregistry.com/fire-protection/california/rolling-hills-estates/) — 2 companies
- [Paramount](https://plumbregistry.com/fire-protection/california/paramount/) — 2 companies
- [Meadow Vista](https://plumbregistry.com/fire-protection/california/meadow-vista/) — 2 companies
- [Los Banos](https://plumbregistry.com/fire-protection/california/los-banos/) — 2 companies
- [Fortuna](https://plumbregistry.com/fire-protection/california/fortuna/) — 2 companies
- [Cathedral City](https://plumbregistry.com/fire-protection/california/cathedral-city/) — 2 companies
- [Culver City](https://plumbregistry.com/fire-protection/california/culver-city/) — 2 companies
- [Eastvale](https://plumbregistry.com/fire-protection/california/eastvale/) — 2 companies
- [Burlingame](https://plumbregistry.com/fire-protection/california/burlingame/) — 2 companies
- [Merced](https://plumbregistry.com/fire-protection/california/merced/) — 2 companies
- [Boulder Creek](https://plumbregistry.com/fire-protection/california/boulder-creek/) — 2 companies
- [Shingle Springs](https://plumbregistry.com/fire-protection/california/shingle-springs/) — 2 companies
- [Anderson](https://plumbregistry.com/fire-protection/california/anderson/) — 2 companies
- [South Lake Tahoe](https://plumbregistry.com/fire-protection/california/south-lake-tahoe/) — 2 companies
- [Ceres](https://plumbregistry.com/fire-protection/california/ceres/) — 2 companies
- [N Hollywood](https://plumbregistry.com/fire-protection/california/n-hollywood/) — 2 companies
- [Jurupa Valley](https://plumbregistry.com/fire-protection/california/jurupa-valley/) — 2 companies
- [Dana Point](https://plumbregistry.com/fire-protection/california/dana-point/) — 2 companies
- [Chula Vista](https://plumbregistry.com/fire-protection/california/chula-vista/) — 2 companies
- [Monrovia](https://plumbregistry.com/fire-protection/california/monrovia/) — 2 companies
- [Carpinteria](https://plumbregistry.com/fire-protection/california/carpinteria/) — 2 companies
- [Valley Village](https://plumbregistry.com/fire-protection/california/valley-village/) — 2 companies
- [Soquel](https://plumbregistry.com/fire-protection/california/soquel/) — 2 companies
- [Orcutt](https://plumbregistry.com/fire-protection/california/orcutt/) — 2 companies
- [Lomita](https://plumbregistry.com/fire-protection/california/lomita/) — 2 companies
- [Rialto](https://plumbregistry.com/fire-protection/california/rialto/) — 2 companies
- [Bell Gardens](https://plumbregistry.com/fire-protection/california/bell-gardens/) — 2 companies
- [Los Osos](https://plumbregistry.com/fire-protection/california/los-osos/) — 2 companies
- [Palo Cedro](https://plumbregistry.com/fire-protection/california/palo-cedro/) — 2 companies
- [Santa Maria](https://plumbregistry.com/fire-protection/california/santa-maria/) — 2 companies
- [Colton](https://plumbregistry.com/fire-protection/california/colton/) — 2 companies
- [Blue Jay](https://plumbregistry.com/fire-protection/california/blue-jay/) — 2 companies
- [Lakewood](https://plumbregistry.com/fire-protection/california/lakewood/) — 2 companies
- [Mill Valley](https://plumbregistry.com/fire-protection/california/mill-valley/) — 2 companies
- [Hidden Valley Lake](https://plumbregistry.com/fire-protection/california/hidden-valley-lake/) — 2 companies
- [San Martin](https://plumbregistry.com/fire-protection/california/san-martin/) — 2 companies
- [Thousand Palms](https://plumbregistry.com/fire-protection/california/thousand-palms/) — 2 companies
- [Ione](https://plumbregistry.com/fire-protection/california/ione/) — 2 companies
- [Ramona](https://plumbregistry.com/fire-protection/california/ramona/) — 2 companies
- [Buena Park](https://plumbregistry.com/fire-protection/california/buena-park/) — 2 companies
- [Cotati](https://plumbregistry.com/fire-protection/california/cotati/) — 2 companies
- [Ukiah](https://plumbregistry.com/fire-protection/california/ukiah/) — 2 companies

_Source: California Contractors State License Board (CSLB) licensee records (https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx), retrieved October 24, 2026. Published by Plumb Registry._