| 90 Fence INC | Savino Sylvestre Carretero | — | (661) 429 9069 | Other | Palmdale · Los Angeles County | — | — |
| 9001 Build Group | Edvin Haghverdian | — | (818) 818 9001 | GC, remodel, ADU | Valencia · Los Angeles County | — | — |
| 909 Construction | Thomas Lin | — | (626) 766 1618 | GC, remodel, ADU | San Gabriel · Los Angeles County | — | — |
| 911 Attic Remodeling INC | Thomas Lewis Golston | — | (408) 769 1716 | GC, remodel, ADU | Canoga Park · Los Angeles County | — | — |
| 911 Construction & Electric INC | Haik Soualk Hairapetian | — | (747) 255 8595 | Electricians | Sunland · Los Angeles County | — | — |
| 911 Plumbing & Rooter | 911 Plumbing & Rooter | — | (818) 441 6523 | Other | Burbank · Los Angeles County | — | — |
| 911 Plumbing And Rooter | 911 Plumbing And Rooter | — | (562) 762 6017 | Other | Pico Rivera · Los Angeles County | — | — |
| 911 Plumbing Services INC | Ayvazyan Gevorg | — | (818) 399 3010 | Other | Valley Village · Los Angeles County | — | — |
| 911 Restoration Of Hollywood INC | Josh Yehoshua Shooki Kfir | — | (310) 954 7438 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| 911 Rooter Services | Tepirjyan Avetis | — | (818) 398 3383 | Other | North Hollywood · Los Angeles County | — | — |
| 99 Nine Nine | Hong Wang | — | (626) 215 5518 | GC, remodel, ADU | Temple City · Los Angeles County | — | — |
| 999 Construction Corp | Ta Pui Shun Lam | — | (626) 216 2226 | GC, remodel, ADU | San Gabriel · Los Angeles County | — | — |
| A & A Construction Services LLC | David Armando Aguila R | — | (747) 230 2235 | GC, remodel, ADU | Winnetka · Los Angeles County | — | — |
| A & A Custom Pavers INC DBA Interlocking Pavers | Hugo Daniel Landeros | — | (818) 590 3118 | Other | Santa Clarita · Los Angeles County | — | — |
| A & A Door INC | Amado Jr Romero Ramirez | — | (213) 703 8240 | Other | Norwalk · Los Angeles County | — | — |
| A & A Electrical INC | Alvin Ventura | — | (310) 699 2305 | Electricians | Woodland Hills · Los Angeles County | — | — |
| A & A Enterprises | Jonathan S Cornwall | — | (818) 957 8000 | Electricians | La Canada · Los Angeles County | — | — |
| A & A Fire Protection | A & A Fire Protection | — | (323) 343 8726 | Other | Lancaster · Los Angeles County | — | — |
| A & A General Construction | Dermgerdichian Boris | — | (818) 568 7279 | GC, remodel, ADU | Glendale · Los Angeles County | — | — |
| A & A Henins INC | Andrew Charles Henins | — | (562) 776 1646 | Other | Downey · Los Angeles County | — | — |
| A & A Plaster Masters Corp | Rene Antonio Fernandez | — | (323) 441 3742 | Other | Van Nuys · Los Angeles County | — | — |
| A & A Plumbing | A & A Plumbing | — | (818) 343 5454 | Other | Sherman Oaks · Los Angeles County | — | — |
| A & A Plumbing And Sons INC | Pinhas Hadad | — | (818) 805 2345 | Other | Sherman Oaks · Los Angeles County | — | — |
| A & A Pool Plastering | Art Romo Valenzuela | — | (562) 942 9791 | Pool | Pico Rivera · Los Angeles County | — | — |
| A & A Quality Hardwood Flooring INC | Attila Prahar | — | (818) 915 1870 | Other | Granada Hills · Los Angeles County | — | — |
| A & A Quick Cooling INC | Elbaz Yizhaq | — | (310) 273 7037 | HVAC | Los Angeles · Los Angeles County | — | — |
| A & A Renovation INC | Eddie Saleh Amari | — | (424) 300 0130 | GC, remodel, ADU | Lomita · Los Angeles County | — | — |
| A & A Tree Service INC | Javier Carrillo | — | (310) 559 3628 | Tree | Hacienda Heights · Los Angeles County | — | — |
| A & B Construction | Tony Asador Belderian | — | (818) 427 6197 | GC, remodel, ADU | Glendale · Los Angeles County | — | — |
| A & B Elite Construction INC | Curiel Agustin Hernandez | — | (562) 991 7751 | GC, remodel, ADU | Whittier · Los Angeles County | — | — |
| A & B General Construction | Sanchez Lopez Alejandro | — | (818) 442 5041 | GC, remodel, ADU | Lancaster · Los Angeles County | — | — |
| A & B Maintenance And General Contractors | Salahshour Afshin | — | (818) 601 4074 | GC, remodel, ADU | West Hills · Los Angeles County | — | — |
| A & B Malibu Plumbing Heating & Electrical | Cecile Roberts Valdivia-Mairesse | — | (310) 456 8550 | HVAC | Santa Monica · Los Angeles County | — | — |
| A & C Concrete INC | Antonio Dario Bautista | — | (661) 955 0039 | Other | Palmdale · Los Angeles County | — | — |
| A & C Plastering Specialist INC | Cortes-varillas Alexander | — | (626) 639 9108 | Other | Covina · Los Angeles County | — | — |
| A & C Remodeling INC | Austin Kang | — | (213) 915 7619 | GC, remodel, ADU | Downey · Los Angeles County | — | — |
| A & D Builders | A & D Builders | — | (818) 535 2682 | GC, remodel, ADU | Burbank · Los Angeles County | — | — |
| A & D Plastering Co | Alex Martin Daniels | — | (310) 538 1577 | Other | Torrance · Los Angeles County | — | — |
| A & E Builders INC | Kamalian Argishti | — | (818) 551 0770 | GC, remodel, ADU | Glendale · Los Angeles County | — | — |
| A & E Construction | Valencia Enrique | — | (818) 331 4898 | GC, remodel, ADU | Newhall · Los Angeles County | — | — |