| Arvizu Construction | Joseph Christopher Arvizu | — | (661) 549 0710 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Arzate's General Construction | Juan Manuel Jr Arzate | — | (661) 401 1062 | GC, remodel, ADU | Arvin · Kern County | — | — |
| Asap General Contracting INC | Martin F Alatorre | — | (661) 404 4026 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Ascend Real Estate And Property Management INC | Nikolas Troy Boone | — | (661) 873 5770 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Ase Scaffold Solutions | Ase Scaffold Solutions | — | (661) 865 4526 | Other | Bakersfield · Kern County | — | — |
| Ashton Electric | Jerry Leon Ashton | — | (661) 342 1978 | Electricians | Bakersfield · Kern County | — | — |
| Asp Plumbing INC | Allen Tex Penton | — | (661) 304 7701 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Aspen Builders INC | Lesa Ann Cyr | — | (661) 823 8670 | GC, remodel, ADU | Tehachapi · Kern County | — | — |
| Aspen Ii Homes INC | Mark Franklin Sheehan | — | (209) 304 6175 | GC, remodel, ADU | Tehachapi · Kern County | — | — |
| Asphalt Dr LLC | Jeffrey Marvin White | — | (661) 589 5893 | Other | Bakersfield · Kern County | — | — |
| At Electric | Austin Tray Turner | info@atelectric.com | (661) 565 6052 | Electricians | Bakersfield · Kern County | — | — |
| At Home Inspections | At Home Inspections | — | (661) 636-6300 | Inspectors | Bakersfield · Kern County | — | — |
| Atkins Services | Jeffrey Gene Atkins | — | (661) 565 7927 | Electricians | Tehachapi · Kern County | — | — |
| Atlantis Energy | Atlantis Energy | — | (818) 441 1779 | Electricians | Frazier Park · Kern County | — | — |
| Atlas Glass | Atlas Glass | — | (661) 900 3420 | Windows, patio, painters | Bakersfield · Kern County | — | — |
| Atlas HVAC Solutions | Atlas HVAC Solutions | — | (661) 376 0220 | HVAC | Arvin · Kern County | — | — |
| Atlas Plumbing | Atlas Plumbing | — | (661) 325 2123 | HVAC | Bakersfield · Kern County | — | — |
| Atlas Pool Care INC | Brad Lee Ward | — | (661) 587 3573 | Pool | Bakersfield · Kern County | — | — |
| Atm Specialty Services INC | Christopher Krause | — | (951) 219 7181 | Other | Kernville · Kern County | — | — |
| Auburn Oak Builders INC | Richard Aaron Jr Pratt | impallari@gmail.com | (661) 324 2800 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Austin Enterprise | Patricia Mary Austin | — | (661) 589 1001 | Other | Bakersfield · Kern County | — | — |
| Austin Wayne Nord | Austin Wayne Nord | — | (661) 616 8764 | Electricians | Bakersfield · Kern County | — | — |
| Auto Tint West INC | Brian Keith Collier | — | (661) 327 4032 | Other | Bakersfield · Kern County | — | — |
| Avalos Landscape | Avalos Landscape | — | (818) 675 3430 | Windows, patio, painters | Shafter · Kern County | — | — |
| Aventus Building Group LLC | Christian Andrew Arevalo | info@aventusbuildinggroup.com | (562) 212 7698 | GC, remodel, ADU | Tehachapi · Kern County | — | — |
| Avery Automation Solutions | Avery Automation Solutions | — | (661) 599 4904 | Electricians | Bakersfield · Kern County | — | — |
| Avery Construction Company | Gregg Marlen Avery | — | (805) 320 8311 | GC, remodel, ADU | Frazier Park · Kern County | — | — |
| Avid Plumbing & Drain | Avid Plumbing & Drain | — | (971) 269 8808 | Other | Bakersfield · Kern County | — | — |
| Avila's Construction | Avila Sergio | — | (661) 586 1278 | GC, remodel, ADU | Delano · Kern County | — | — |
| Avtek And Electrical | Gerry Verlyn Gaines | — | (661) 747 5771 | Electricians | Bakersfield · Kern County | — | — |
| Aws LLC | David Anthony Alvarado | — | (661) 340 2064 | Other | Bakersfield · Kern County | — | — |
| Axis Contracting Corp | Graeme Andrew Walker | — | (512) 401 5084 | Electricians | Bakersfield · Kern County | — | — |
| Ayres Heating & Cooling | Ayres Heating & Cooling | — | (661) 497 9335 | HVAC | Bakersfield · Kern County | — | — |
| Aztec Custom Concrete | Aztec Custom Concrete | — | (661) 535 9737 | Other | Bakersfield · Kern County | — | — |
| Aztec Plumbing | Aztec Plumbing | — | (661) 513 8454 | Other | Bakersfield · Kern County | — | — |
| Aztec Roofing Tear-off & Clean Up | Heldai Santana-Llanos | — | (661) 809 0548 | Other roofers | Lamont · Kern County | — | — |
| Azul Tile LLC | Gonzalez Gerardo Garcia | — | (661) 332 7294 | Other | Bakersfield · Kern County | — | — |
| B & B Construction | Steven Michael Mc Garry | — | (760) 213 6209 | GC, remodel, ADU | Caliente · Kern County | — | — |
| B & C Electric LLC | Luis Enrique Bahena | — | (661) 745 8605 | Electricians | Bakersfield · Kern County | — | — |
| B & D Mechanical | B & D Mechanical | — | (661) 805 2017 | HVAC | Tehachapi · Kern County | — | — |