| Action Property Management | Action Property Management | — | (949) 450-0202 | Property managers | Los Angeles · Los Angeles County | — | — |
| Action Property Services | Matthew Shidan Feres | — | (951) 393 8460 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Action Pump And Water LLC | Capener | — | (916) 622 4886 | Other | Watsonville · Santa Cruz County | — | — |
| Action Pumping INC | Kenneth Ray Mahaffey | — | (760) 365 0861 | Other | Yucca Valley · San Bernardino County | — | — |
| Action Repair Service | Hisham Abder-rahim El-khatib | — | (951) 808 0207 | HVAC | Corona · Riverside County | — | — |
| Action Response Team INC | Erik William Kuhnert | info@actionresponse.com | (909) 585 9019 | GC, remodel, ADU | Big Bear Lake · San Bernardino County | — | — |
| Action Restoration | Action Restoration | — | (909) 930 1130 | GC, remodel, ADU | Ontario · San Bernardino County | — | — |
| Action Restoration Corporation | Louis John Sr Villa | — | (562) 201 6332 | GC, remodel, ADU | Whittier · Los Angeles County | — | — |
| Action Roofing Company LLC | Peggy Terese Martin | — | (805) 966 3696 | Other roofers | Santa Barbara · Santa Barbara County | — | — |
| Action Roofing INC | Robert Fay Jr Osborn | — | (310) 326 5678 | Other roofers | Torrance · Los Angeles County | — | — |
| Action Roofing LLC | Nicolas Manuel Carrillo | — | (626) 842 7008 | Other roofers | Sacramento · Sacramento County | — | — |
| Action Roofing Service INC | Elvin Tracy Gorham | actionroofingsve@aol.com | (530) 682-9276 | Other roofers | Yuba City · Sutter County | — | — |
| Action Rooter | Action Rooter | — | (805) 541 1333 | Other | San Luis Obispo · San Luis Obispo County | — | — |
| Action Rooter | Action Rooter | — | (530) 251 3496 | Other | Diamond Springs · El Dorado County | — | — |
| Action Sanitary INC | Jerry Lee Campo | — | (707) 994 5068 | Other | Lower Lake · Lake County | — | — |
| Action Security Systems | Action Security Systems | — | (951) 852 5515 | Electricians | Temecula · Riverside County | — | — |
| Action Services | Roberta Mary Ivens | — | (562) 430 2800 | GC, remodel, ADU | Long Beach · Los Angeles County | — | — |
| Action Spa Repair LLC | Jimenez Solano Julio | contact@actionsparepair.com | (619) 444 1720 | Pool | El Cajon · San Diego County | — | — |
| Action Stainless Installation LLC | Mark Christopher Miranda | — | (714) 512 7833 | Other | Rancho Cucamonga · San Bernardino County | — | — |
| Action Tile & Stone | Edgar Javier Mendoza Venegas | — | (760) 390 7555 | Other | Vista · San Diego County | — | — |
| Action Traffic Safety | Action Traffic Safety | — | (626) 893 0404 | Other | Garden Grove · Orange County | — | — |
| Action Tree | Action Tree | actiontreesb@gmail.com | (805) 966 5969 | Tree | Santa Barbara · Santa Barbara County | — | — |
| Action Welding Corp | Anthony Emilio Medina | — | (714) 632 8669 | Other | Anaheim · Orange County | — | — |
| Action Window And Door | David Anthony Baldwin | — | (619) 670 7025 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Activate Fire Protection | Kyle Robert Williams | help@activatefireprotection.com | (925) 848-0188 | Other | Brentwood · Contra Costa County | — | — |
| Activate Garage Doors | Activate Garage Doors | — | (669) 239 1304 | Other | Hayward · Alameda County | — | — |
| Activated Communications INC | Jason Cooper Meyers | — | (831) 438 2900 | Other | Santa Cruz · Santa Cruz County | — | — |
| Activated Fire Protection | Activated Fire Protection | — | (909) 401 1078 | Other | Fontana · San Bernardino County | — | — |
| Activcare Living INC | Todd Andrew Shetter | — | (858) 565 4424 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Active Air | Active Air | info@active-air.com | (909) 597 5539 | HVAC | Chino Hills · San Bernardino County | — | — |
| Active Air Co | Uriostegui Nicholas | info@active-air.com | (714) 552 0292 | HVAC | Santa Ana · Orange County | — | — |
| Active Air Control INC | Spencer Kyle Kincaid | — | (951) 987 0416 | HVAC | Corona · Riverside County | — | — |
| Active Air INC | Lopez Artemio Ramirez | info@active-air.com | (559) 201 3818 | HVAC | Kerman · Fresno County | — | — |
| Active Air Specialists INC | Jeremy Stephen Villegas | — | (661) 674 6946 | HVAC | Littlerock · Los Angeles County | — | — |
| Active Air Systems INC | Douglas John Frank | — | (661) 857 0000 | HVAC | Santa Clarita · Los Angeles County | — | — |
| Active Builders & Remodeling | Active Builders & Remodeling | — | (323) 632 3568 | GC, remodel, ADU | Carson · Los Angeles County | — | — |
| Active Connectivity Low Voltage Solutions | Adrian Sebastian Fernandez | — | (408) 518 1691 | Other | Salinas · Monterey County | — | — |
| Active Construction INC | Erika Veronica Aguilar Ortiz | — | (562) 200 4437 | Electricians | Bellflower · Los Angeles County | — | — |
| Active Construction Services INC | Raul Escobedo Felix | — | (661) 304 4523 | Other | Bakersfield · Kern County | — | — |
| Active Contracting INC | Chet Andrew Mazakas | admin@active-contracting.com | (562) 881 6406 | GC, remodel, ADU | Villa Park · Orange County | — | — |