| A 2 Z Electric | Zamora Robert | — | (310) 220 4683 | Electricians | Torrance · Los Angeles County | — | — |
| A 2 Z Refrigeration Company | Zoltan Szabo Sarkadi | — | (818) 400 4024 | HVAC | Woodland Hills · Los Angeles County | — | — |
| A A - W L Const & Electric | Lam Warren | — | (626) 478 5001 | Electricians | La Puente · Los Angeles County | — | — |
| A A A - Value Window Services INC | Jimin Chen | — | (626) 962 7568 | GC, remodel, ADU | Duarte · Los Angeles County | — | — |
| A A A All Star Construction INC | Dave Cohen | — | (800) 975 5512 | GC, remodel, ADU | Valley Village · Los Angeles County | — | — |
| A A A Construction And Development | Duyeb Amer | — | (818) 785 5552 | HVAC | Canoga Park · Los Angeles County | — | — |
| A A A Construction Services | Julie Sheila Grand | — | (818) 521 1418 | GC, remodel, ADU | Sherman Oaks · Los Angeles County | — | — |
| A A A Decking Corp DBA A A A Waterproofing | Vassil Ivanov Antonov | — | (310) 730 5005 | Windows, patio, painters | Los Angeles · Los Angeles County | — | — |
| A A A Deflooding | A A A Deflooding | — | (818) 943 3800 | Other | Reseda · Los Angeles County | — | — |
| A A A Electric | Mario Enrique Jr Anaya | — | (818) 674 1335 | Electricians | Lake Balboa · Los Angeles County | — | — |
| A A A Electric | Otero Alfredo | — | (424) 241 2714 | Electricians | Redondo Beach · Los Angeles County | — | — |
| A A A Electrical Service Group INC | Alejandro Castillo Plascencia | — | (818) 262 2482 | HVAC | Northridge · Los Angeles County | — | — |
| A A A Floodlight & Sign Repair | David Alan Yung | — | (818) 785 8850 | Electricians | Van Nuys · Los Angeles County | — | — |
| A A A Glass & Mirror INC | Sherif Kamal Mikhail | — | (310) 390 5200 | Windows, patio, painters | Culver City · Los Angeles County | — | — |
| A A A Painting | A A A Painting | — | (310) 926 0021 | Windows, patio, painters | Los Angeles · Los Angeles County | — | — |
| A A A Plastering | A A A Plastering | — | (562) 619 3849 | Other | Bellflower · Los Angeles County | — | — |
| A A A Plumbing Solutions INC | Michael Ray Sherritt | — | (310) 344 9401 | Other | Torrance · Los Angeles County | — | — |
| A A A Quality Flooring Specialist | Sepulveda Ricardo | — | (323) 681 2333 | Other | Los Angeles · Los Angeles County | — | — |
| A A A Roofing Services INC | Leran Armand Yosef | — | (818) 654 5977 | Other roofers | West Hills · Los Angeles County | — | — |
| A A A Shotcrete INC | Nadia Ann Alejandre | — | (818) 903 6795 | Other | Granada Hills · Los Angeles County | — | — |
| A A A/c & Builder | A A A/c & Builder | — | (626) 278 4521 | HVAC | San Gabriel · Los Angeles County | — | — |
| A A Allied Co | Daniel Sang Chyun | — | (213) 507 7246 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| A A B Garage Doors INC | Fatima Gheith Kabalawi | — | (310) 530 3637 | Other | Torrance · Los Angeles County | — | — |
| A A C R General Construction INC | Jose Luis Villalpando Rocha | — | (844) 222 7421 | GC, remodel, ADU | Downey · Los Angeles County | — | — |
| A A Construction | Andrew Gilbert Aragon | — | (626) 858 9382 | GC, remodel, ADU | West Covina · Los Angeles County | — | — |
| A A Construction | Adrian S Alatorre | — | (562) 972 7680 | GC, remodel, ADU | La Mirada · Los Angeles County | — | — |
| A A Demolition INC | Alejandro Aguilar-Garcia | — | (213) 864 9499 | Other | Los Angeles · Los Angeles County | — | — |
| A A Desoto Flooring & Carpet | Zekrollah Rabbani | — | (818) 700 7800 | Other | Canoga Park · Los Angeles County | — | — |
| A A Electric & Plumbing INC | Armen Deiravanessi Tabrozzo | — | (818) 937 9803 | Electricians | Glendale · Los Angeles County | — | — |
| A A Electric Co | Alexandru Arthur Achimi | — | (818) 595 1135 | Electricians | Woodland Hills · Los Angeles County | — | — |
| A A Electrical Services INC | Alexander Matveyevich Polishchuk | — | (818) 437 6736 | Electricians | Granada Hills · Los Angeles County | — | — |
| A A G Construction And Development | Randy Ray Argo | — | (909) 599 0746 | Electricians | San Dimas · Los Angeles County | — | — |
| A A G Construction Company | Zakaryan Grigor | — | (310) 801 6216 | GC, remodel, ADU | La Canada · Los Angeles County | — | — |
| A A G Services INC | Mkrtich Peltikian | — | (818) 767 0303 | Electricians | Sun Valley · Los Angeles County | — | — |
| A A General Contracting | Adourian Adour | — | (310) 649 4649 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| A A Gonzalez Incorporated | Aida Araceli Lepe | — | (818) 367 2242 | GC, remodel, ADU | San Fernando · Los Angeles County | — | — |
| A A Greco INC | Anthony Albert Greco | — | (310) 678 9247 | GC, remodel, ADU | San Marino · Los Angeles County | — | — |
| A A Iron Co | Adam Alan Warren | — | (818) 744 3390 | Other | Sylmar · Los Angeles County | — | — |
| A A Ironco | A A Ironco | — | (818) 744 3390 | Other | Sylmar · Los Angeles County | — | — |
| A A J INC | David Allen Moritz | — | (818) 406 2115 | GC, remodel, ADU | Azusa · Los Angeles County | — | — |