| A & J Scaffold INC | Noemi Villagomez | levi@ajscaffold.com | (909) 214 4323 | Other | Fontana · San Bernardino County | — | — |
| A & J Sheet Metal INC | James Joseph Hanna | — | (714) 799 2861 | Other | Stanton · Orange County | — | — |
| A & J Tree | A & J Tree | — | (805) 968 1904 | Tree | Goleta · Santa Barbara County | — | — |
| A & J Tree Care INC | Rolando Robles | — | (909) 618 4551 | Windows, patio, painters | Pomona · Los Angeles County | — | — |
| A & J Tree INC | Jose Guadalupe Jauregui | — | (818) 321 3741 | Tree | Reseda · Los Angeles County | — | — |
| A & J Velazquez Landscaping INC | Jose Antonio Velazquez | — | (209) 534 5717 | Windows, patio, painters | Modesto · Stanislaus County | — | — |
| A & J Velazquez Roofing INC DBA A & J Roofing | Jorge Luis Velazquez | — | (760) 916 4142 | Other roofers | Vista · San Diego County | — | — |
| A & J Worth Construction | Shawn Ezra Worth | — | (916) 910 4903 | GC, remodel, ADU | Elverta · Sacramento County | — | — |
| A & K Carpet And Flooring A Partnership | Guadalupe Ramirez | — | (562) 244 5705 | Other | Long Beach · Los Angeles County | — | — |
| A & K Construction LLC | Antzoulatos Chris | — | (818) 262 9254 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| A & K Electric | Sukhpal Singh Sangha | — | (650) 642 1666 | Electricians | San Mateo · San Mateo County | — | — |
| A & K Electric | Amador Arturo | — | (831) 210 4968 | Electricians | Prunedale · Monterey County | — | — |
| A & K Plumbing INC | Zhanhong Zeng | — | (415) 205 7091 | Other | San Francisco · San Francisco County | — | — |
| A & K Roofing | George David Padilla | — | (707) 425 1871 | Other roofers | Fairfield · Solano County | — | — |
| A & K Underground | A & K Underground | — | (650) 222 4058 | Other | Newark · Alameda County | — | — |
| A & L 360 General Construction INC | Luis Gerardo Rocha Perez | — | (909) 242 6869 | GC, remodel, ADU | Beaumont · Riverside County | — | — |
| A & L Air Conditioning INC | Luis Uriel Galvan Salvador | — | (559) 283 1827 | HVAC | Fresno · Fresno County | — | — |
| A & L Asphalt Maintenance | A & L Asphalt Maintenance | — | (707) 528 0388 | Other | Santa Rosa · Sonoma County | — | — |
| A & L Communications INC | Luis Fernando Cuevas-chagoyan | — | (818) 720 7893 | Other | North Hills · Los Angeles County | — | — |
| A & L Electric | Anthony Nicholas Ratto | — | (209) 483 2148 | Electricians | Napa · Napa County | — | — |
| A & L Garage Doors | Gerardo Alejandro Franco | — | (707) 538 9200 | Other | Santa Rosa · Sonoma County | — | — |
| A & L Landscape And Gardening Ser | Lievanos Austreberto | — | (760) 774 5506 | Windows, patio, painters | Desert Hot Springs · Riverside County | — | — |
| A & L Operating Services INC | Antony Henrik Lovdokken | — | (818) 771 0887 | Other | Shadow Hills · Los Angeles County | — | — |
| A & L Plastering | A & L Plastering | — | (909) 827 7400 | Other | Fontana · San Bernardino County | — | — |
| A & L Tile INC | Cesar Raul Aguilera | — | (619) 947 1470 | Other | San Diego · San Diego County | — | — |
| A & M Builders | A & M Builders | — | (707) 331 2915 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| A & M Builders Group INC | Nick| Nikkhoo Abbas Navid Nikkhoo | — | (310) 913 1605 | GC, remodel, ADU | Tarzana · Los Angeles County | — | — |
| A & M Builders LLC | Alan George Parks | — | (707) 834 1315 | GC, remodel, ADU | Mc Kinleyville · Humboldt County | — | — |
| A & M Compressors INC | Gregory Scott Straughan | — | (559) 375 1975 | Other | Fresno · Fresno County | — | — |
| A & M Concrete & Fence | Leija Andy | — | (408) 945 6300 | Other | Milpitas · Santa Clara County | — | — |
| A & M Construction | Zaczyk Maciej | — | (310) 770 1070 | GC, remodel, ADU | Culver City · Los Angeles County | — | — |
| A & M Construction Co | Ali Hosien Mikhchi | — | (818) 674 2375 | GC, remodel, ADU | Woodland Hills · Los Angeles County | — | — |
| A & M Contracting | Anthony Salvatore Marraccino | — | (949) 636 5125 | Other | Lake Forest · Orange County | — | — |
| A & M Contractors | Catinean Marcel | — | (909) 731 2535 | Other roofers | Redlands · San Bernardino County | — | — |
| A & M Cooling And Heating INC | Paul David Gonzales | — | (209) 256 9115 | HVAC | Pioneer · Amador County | — | — |
| A & M Development Co | Ashley Kim | — | (310) 710 3842 | GC, remodel, ADU | San Pedro · Los Angeles County | — | — |
| A & M Electric | Mario Miles Payan | — | (707) 446 2127 | Electricians | Vacaville · Solano County | — | — |
| A & M Electrical Construction INC DBA A & M Construction | Alecsandru Catinean | — | (909) 674 6364 | Electricians | Redlands · San Bernardino County | — | — |
| A & M Family Roofing Corp | Arturo Cruz Martinez Alvarez | info@aandmfamilyroofingcorp.com | (714) 402 0127 | Other roofers | Santa Ana · Orange County | — | — |
| A & M Fire Protection | A & M Fire Protection | — | (510) 314 5613 | Other | Martinez · Contra Costa County | — | — |