| Act Developments | Lin Jack | — | (626) 572 4019 | GC, remodel, ADU | Temple City · Los Angeles County | — | — |
| Act Distribution INC | Kenneth Mason Johnson | — | (714) 668 1200 | GC, remodel, ADU | Costa Mesa · Orange County | — | — |
| Act Fast Restoration | Hernandez Osmin | — | (818) 504 8450 | GC, remodel, ADU | La Crescenta · Los Angeles County | — | — |
| Act First Fire Protection INC | Anton William Schroeder | — | (714) 630 3916 | Other | Anaheim · Orange County | — | — |
| Act Flooring | Act Flooring | — | (530) 636 3949 | Other | Chico · Butte County | — | — |
| Act Now Fire Inspections | Eric Albert Talistu | — | (855) 228 6699 | Other | Fairfield · Solano County | — | — |
| Act Now! Instant Signs INC | Guillermo Maldonado Araiza | — | (909) 394 7818 | Other | San Dimas · Los Angeles County | — | — |
| Act Professional Painting And Decorating | Act Professional Painting And Decorating | — | (510) 435 9955 | Windows, patio, painters | Livermore · Alameda County | — | — |
| Act2ev LLC | Megan Van Horn Reger | — | (408) 640 3267 | Other | Los Gatos · Santa Clara County | — | — |
| Actin Construction | Bryan Hyun Huh | — | (408) 865 0404 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Action 1 Automated Gates | Todd Neal Thomas | — | (951) 552 5967 | Other | Riverside · Riverside County | — | — |
| Action 1 Construction | Subhi Hussein Elodat | — | (310) 946 6688 | GC, remodel, ADU | Lawndale · Los Angeles County | — | — |
| Action 1 Handyman | Action 1 Handyman | — | (661) 319 4803 | GC, remodel, ADU | Saugus · Los Angeles County | — | — |
| Action 1 Trauma & Restoration | Action 1 Trauma & Restoration | — | (916) 417 5332 | GC, remodel, ADU | Citrus Heights · Sacramento County | — | — |
| Action 1st Loss Prevention INC | Wayne Alan Yost | — | (949) 661 3010 | Other | Dana Point · Orange County | — | — |
| Action Acoustics INC | Dejon Louis| Anderson De Jon Louis Anderson | — | (951) 237 8391 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Action Air Conditioning & Heating | Action Air Conditioning & Heating | — | (760) 886 9176 | HVAC | El Centro · Imperial County | — | — |
| Action Air Conditioning & Heating | Action Air Conditioning & Heating | — | (760) 400-7824 | HVAC | San Marcos · Inyo County | — | — |
| Action Air Conditioning & Heating | Action Air Conditioning & Heating | — | (760) 400-7824 | HVAC | San Diego · San Diego County | — | — |
| Action Air Conditioning And Heating | Anthony Garrett Walker | — | (760) 400-7824 | HVAC | San Marcos · San Diego County | — | — |
| Action Air Conditioning Service | Derrick Levert Tucker | — | (951) 764 9829 | HVAC | Moreno Valley · Riverside County | — | — |
| Action Asphalt | Shawn Christopher Peterson | info@actionasphalt.com | (707) 529 7478 | Other | Vacaville · Solano County | — | — |
| Action Asphalt Maintenance INC | Travis William Stokes | — | (916) 854 1881 | Other | Sacramento · Sacramento County | — | — |
| Action Brothers Concrete Pumping | Erick Noel Nunez | — | (805) 901 7867 | Other | Ventura · Ventura County | — | — |
| Action Builders | Action Builders | — | (559) 676 8570 | GC, remodel, ADU | Coarsegold · Madera County | — | — |
| Action Builders | Action Builders | — | (209) 333 8757 | GC, remodel, ADU | Lockeford · San Joaquin County | — | — |
| Action Builders And Construction INC | Vikash Deo Sharma | — | (916) 801 8556 | GC, remodel, ADU | Elk Grove · Sacramento County | — | — |
| Action Cabinets | Action Cabinets | — | (916) 869 7368 | Other | Rancho Cordova · Sacramento County | — | — |
| Action Carpet & Floor Decor | Kany Hassan | action@acfloordecor.com | (760) 726 9777 | Other | Oceanside · San Diego County | — | — |
| Action Cement INC | Richard Wayne Sullivan | — | (209) 369 7000 | Other | Lodi · San Joaquin County | — | — |
| Action Cleanup Environmental Services INC | Arsenio Hernandez | — | (800) 230 0810 | Other | Carson · Los Angeles County | — | — |
| Action Construction & Demolition INC | Alexander Bryant Bain | adavis@davisadams.com | (619) 520 8222 | GC, remodel, ADU | La Mesa · San Diego County | — | — |
| Action Construction Group INC | Kevin Karen Kachaturian | — | (830) 302 8315 | GC, remodel, ADU | Burbank · Los Angeles County | — | — |
| Action Construction Services | Marius Lance Antaky | — | (805) 258 6760 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Action Construction Specialist | James William Patterson | — | (909) 792 3199 | GC, remodel, ADU | Redlands · San Bernardino County | — | — |
| Action Contractors INC | Patricia Anne Moreau | — | (310) 505 6380 | Electricians | Torrance · Los Angeles County | — | — |
| Action Development | Action Development | — | (951) 737 8391 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Action Door | Jack Austin Amos | — | (760) 296 7777 | Other | Apple Valley · San Bernardino County | — | — |
| Action Door Controls INC | Richard Paul Mesa | — | (951) 784 0622 | Other | Riverside · Riverside County | — | — |
| Action Door Repair Corporation | Joseph Anthony Dejaifre | — | (323) 583 1026 | Other | Huntington Park · Los Angeles County | — | — |