| Aa Traffic | Maria Guadalupe Arredondo Alcantara | — | (951) 356 5878 | Other | Corona · Riverside County | — | — |
| Aa Tree Care LLC | Alberto Mares | — | (916) 918 6836 | Other | Roseville · Placer County | — | — |
| Aa Trusted Construction INC | Flores Hernandez Bryan | — | (951) 435 5152 | GC, remodel, ADU | Homeland · Riverside County | — | — |
| Aa Twin Brothers Plumbing Corp | George Bethel Iii Veal | — | (310) 908 9324 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| Aa Welding | Aa Welding | — | (760) 715 0107 | Other | Escondido · San Diego County | — | — |
| Aa Window & Door LLC | Matthew Shawn Szepesi | — | (530) 668 1262 | Other | Woodland · Yolo County | — | — |
| Aa-Beekeeper | Live Bee Removal & Relocation | Aa-Beekeeper | Live Bee Removal & Relocation | — | (858) 299-7500 | Pest, tile roofs | San Marcos · Imperial County | — | — |
| Aa1 Developers INC | Christopher Allen Sisto | — | (916) 532 5312 | GC, remodel, ADU | Citrus Heights · Sacramento County | — | — |
| Aa1 Graphics & Signs | Artik Avanessians | — | (818) 545 7360 | GC, remodel, ADU | Glendale · Los Angeles County | — | — |
| Aaa AC & Heating INC | Shahmahmood Yousofi | — | (916) 345 3737 | HVAC | Sacramento · Sacramento County | — | — |
| Aaa Arroyo Air Comfort | Trinidad Jr Velasquez | — | (909) 697 5169 | HVAC | Fontana · San Bernardino County | — | — |
| Aaa Arroyo Air Comfort | Norman Dale Green | — | (951) 371 0660 | HVAC | Norco · Riverside County | — | — |
| Aaa Awnings INC | Michael Stephen Lewis | — | (714) 597 6920 | Windows, patio, painters | Garden Grove · Orange County | — | — |
| Aaa Backflow Prevention INC | Jordan Cameron Lee | — | (877) 226 3569 | Other | Stockton · San Joaquin County | — | — |
| Aaa Bay Area Builders INC | Oscar Eduardo Moreno | contact@aaabayareabuilders.com | (408) 313 5591 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Aaa Bear Valley Builders INC | Mark Edward Harris | — | (909) 520 8982 | Electricians | Big Bear City · San Bernardino County | — | — |
| Aaa Best Gutters | Dale William Butler | — | (714) 693 1400 | Other | Corona · Riverside County | — | — |
| Aaa Blasting INC | Gonzalo Diaz Zesati | — | (707) 328 3543 | Other | Santa Rosa · Sonoma County | — | — |
| Aaa Builder INC | Karen Su | — | (626) 350 8181 | Electricians | El Monte · Los Angeles County | — | — |
| Aaa Builders | Aaa Builders | — | (510) 259 8158 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Aaa Building Construction INC | Chang Soo Ra | aaaurelconstructionllc@gmail.com | (510) 468 7635 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Aaa Chengxiang Construction INC | Chong Liu | — | (929) 426 4140 | GC, remodel, ADU | Montclair · San Bernardino County | — | — |
| Aaa Concrete LLC | Abrego Jorge Calderon | — | (408) 713 8442 | Other | Los Banos · Merced County | — | — |
| Aaa Construction | Fasihi Ramandi Mohsen | yuriy@aaaconstruction.com | (408) 728 3854 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Aaa Construction | Alvarado Arzate Alejandro | yuriy@aaaconstruction.com | (707) 580 7795 | Other | Suisun City · Solano County | — | — |
| Aaa Construction | Eliezer Yehoshua Kiselman | yuriy@aaaconstruction.com | (832) 886 3743 | GC, remodel, ADU | Mountain View · Santa Clara County | — | — |
| Aaa Construction | Sam Aziz Sorisho | yuriy@aaaconstruction.com | (408) 722 4581 | Electricians | Modesto · Stanislaus County | — | — |
| Aaa Construction & Remodeling INC | Mario Diaz | — | (714) 865 3509 | GC, remodel, ADU | Orange · Orange County | — | — |
| Aaa Construction And Remodeling | Assouline Yaniv | — | (833) 420 7378 | GC, remodel, ADU | Laguna Hills · Orange County | — | — |
| Aaa Construction Co | Kim Yeol | yuriy@aaaconstruction.com | (415) 725 1728 | GC, remodel, ADU | San Bruno · San Mateo County | — | — |
| Aaa Construction Management | Artem Vadimovich Mamekhin | — | (925) 989 1710 | GC, remodel, ADU | Clayton · Contra Costa County | — | — |
| Aaa Construction Norcal | Jose Mauricio Plata Luna | — | (408) 219 3316 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Aaa Construction Pros INC | Amir Makki Safay | — | (949) 929 7835 | GC, remodel, ADU | Reseda · Los Angeles County | — | — |
| Aaa Demolition INC | Rodriguez Raymundo | — | (714) 817 0011 | Other | Anaheim · Orange County | — | — |
| Aaa Earthwork Ag & Habitat | Austin Clark Jr Wedemeyer | — | (707) 246 7796 | Other | Fairfield · Solano County | — | — |
| Aaa Electric Co | Arafat K Al-Ali | — | (415) 570 1014 | Electricians | San Francisco · San Francisco County | — | — |
| Aaa Electric Services | Amir Houshang Anvari | — | (714) 269 5867 | Electricians | Coto De Caza · Orange County | — | — |
| Aaa Electrical Enterprises INC DBA Aaa Calvert | Jason Aaron Thomas | — | (562) 429 1546 | HVAC | Long Beach · Los Angeles County | — | — |
| Aaa Electrical Services Heating And Air | Aaa Electrical Services Heating And Air | — | (916) 672-4073 | HVAC | Sacramento · Sacramento County | — | — |
| Aaa Electrical Solutions Sd LLC | Armando Jr Ramirez | — | (858) 603 7930 | Electricians | San Diego · San Diego County | — | — |