| A Miracle Plumbing | A Miracle Plumbing | — | (415) 574 7216 | Other | San Bruno · San Mateo County | — | — |
| A Modern Floor Construction | Korneliy Pavel Perzhu | — | (916) 308 5536 | GC, remodel, ADU | Carmichael · Sacramento County | — | — |
| A Morales Construction | Melvin Antonio Morales | — | (626) 422 9236 | GC, remodel, ADU | La Puente · Los Angeles County | — | — |
| A Morales Electric | Jorge Eduardo Morales Aguilar | — | (805) 906 0726 | Electricians | Moorpark · Ventura County | — | — |
| A More Electric | Dubo Moreno Andres | — | (818) 518 8942 | Electricians | Northridge · Los Angeles County | — | — |
| A Munoz Landscape Construction INC | Munoz Rosas Antonio | — | (408) 779 2900 | Windows, patio, painters | Morgan Hill · Santa Clara County | — | — |
| A N A Building And Design INC | Olga V Ivoilova | — | (408) 202 2231 | HVAC | Menlo Park · San Mateo County | — | — |
| A N A Building Maintenance | A N A Building Maintenance | — | (840) 216 8519 | Electricians | Fontana · San Bernardino County | — | — |
| A N B Excavation Engineering INC | Michael Allen Brewer | — | (760) 510 1501 | Other | San Marcos · San Diego County | — | — |
| A N C Construction | Alfonso Jr Nava | — | (951) 347 3886 | GC, remodel, ADU | Beaumont · Riverside County | — | — |
| A N C Landscaping Services | Navarette Cortez Alejandro | — | (760) 651 9051 | Windows, patio, painters | Victorville · San Bernardino County | — | — |
| A N C Lighting INC | Romero Joel Medina | manager@anclighting.com | (323) 385 7177 | Electricians | Los Angeles · Los Angeles County | — | — |
| A N Construction | Arsenic Pajo | — | (408) 426 6343 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| A N Contracting | Nieves Andy | support@webador.com | (916) 346 2962 | GC, remodel, ADU | Carmichael · Sacramento County | — | — |
| A N D Construction | Arthur Allen Mills | — | (707) 346 7738 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| A N E Construction | Mark David Zika | — | (209) 229 7560 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| A N Electric | Nunez Del Rio Alexis | — | (209) 622 9927 | Electricians | Modesto · Stanislaus County | — | — |
| A N G Construction INC | Arthur Nathaniel George | — | (707) 964 1565 | GC, remodel, ADU | Fort Bragg · Mendocino County | — | — |
| A N M Construction | Alfonso Burresch Iii Moscozo | csmith@anmconstruction.com | (951) 337 1445 | GC, remodel, ADU | Hemet · Riverside County | — | — |
| A N M Construction | Schwaigerlehner Andreas | — | (818) 664 8414 | GC, remodel, ADU | Montrose · Los Angeles County | — | — |
| A N M Construction & Engineering | Abraham Nathan Martinez | — | (661) 729 6200 | Other | Lancaster · Los Angeles County | — | — |
| A N N Contractors | Abdallah Nassim Nabbout | — | (562) 572 8342 | GC, remodel, ADU | La Habra Heights · Los Angeles County | — | — |
| A N Palacios Plumbing INC | Jose Vladimir Palacios Morales | — | (562) 641 6307 | Other | Rialto · San Bernardino County | — | — |
| A N R Development | A N R Development | — | (415) 650 8599 | GC, remodel, ADU | Daly City · San Mateo County | — | — |
| A N R Industries INC | Agustin Nava Rodriguez | — | (323) 557 1400 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| A N R Roofing | Andres Jr Chavez | — | (323) 982 9505 | Other roofers | Los Angeles · Los Angeles County | — | — |
| A N R Roofing Of Petaluma INC | Eloy Rigoverto Jimenez-martinez | — | (707) 548 9576 | Other roofers | Santa Rosa · Sonoma County | — | — |
| A N S Construction INC | Ansari Ali | — | (858) 212 7800 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| A N S Heating And Air Conditioning | Aaron Nathan Shmuckler | — | (949) 290 8979 | HVAC | Costa Mesa · Orange County | — | — |
| A N S Signs | A N S Signs | — | (619) 623 1652 | Other | Spring Valley · San Diego County | — | — |
| A N T Construction Co Always Neat & Tidy Ant | Russell Vaughn Tarrant | — | (530) 417 2780 | GC, remodel, ADU | Shingle Springs · El Dorado County | — | — |
| A N T Integration INC | Anthony Resendez | — | (559) 470 5245 | Other | Fresno · Fresno County | — | — |
| A N U Construction Group | Lee Daniel | — | (626) 230 3977 | GC, remodel, ADU | Monterey Park · Los Angeles County | — | — |
| A N V Contractors INC | Nicolas Vargas | — | (209) 358 7641 | GC, remodel, ADU | Atwater · Merced County | — | — |
| A N V Masonry | A N V Masonry | — | (760) 458 3678 | Other | San Marcos · San Diego County | — | — |
| A Nail At A Time Construction | Ramos Ricardo | — | (323) 855 2131 | GC, remodel, ADU | El Monte · Los Angeles County | — | — |
| A New Dawn Construction INC | Dawn Marie Vredenburg | — | (909) 224 5073 | GC, remodel, ADU | Pinon Hills · San Bernardino County | — | — |
| A New Leaf Tree Care | A New Leaf Tree Care | — | (209) 354-0860 | Tree | Merced · Merced County | — | — |
| A New Life Painting & Decorating | Keith Andrew Wildman | — | (619) 368 0755 | Windows, patio, painters | El Cajon · San Diego County | — | — |
| A New Look Custom | A New Look Custom | — | (213) 864 1531 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |