| A X Elite Trical | A X Elite Trical | — | (310) 701 2935 | Electricians | Manhattan Beach · Los Angeles County | — | — |
| A Xin Electrical INC | Haibin Yan | — | (626) 662 1313 | Electricians | Monterey Park · Los Angeles County | — | — |
| A Y Construction | Yogev Adam | — | (310) 650 0909 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| A Y Development LLC | David Jung | — | (310) 402 6152 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| A Y Hardwood Flooring | A Y Hardwood Flooring | — | (888) 313 9489 | Other | No Hollywood · Los Angeles County | — | — |
| A Zavala Construction INC | Vega Arturo Zavala | — | (818) 231 5943 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| A&a Construction | Arnold Davon Agee | — | (323) 713 4336 | GC, remodel, ADU | Marina Del Rey · Los Angeles County | — | — |
| A&a Masterly Painting | Jonathan Edgardo Anto Aldana Hernandez | — | (213) 440 2324 | Windows, patio, painters | Reseda · Los Angeles County | — | — |
| A&a Projects LLC | Brayan Alejandro Arambula Onate | — | (559) 483 1715 | GC, remodel, ADU | West Hollywood · Los Angeles County | — | — |
| A&b Classic Restoration INC | Bojan Matovic | — | (310) 990 2151 | GC, remodel, ADU | Manhattan Beach · Los Angeles County | — | — |
| A&c Garcia Plumbing | Jose Cristian Ant Garcia Rivera | — | (323) 707 4426 | Other | Los Angeles · Los Angeles County | — | — |
| A&d Construction INC | Dylan Steven Azoulay | — | (818) 964 4884 | GC, remodel, ADU | Sherman Oaks · Los Angeles County | — | — |
| A&d Home Improvement | Derlin Audi Sanchez Lopez | — | (626) 324 9122 | GC, remodel, ADU | La Puente · Los Angeles County | — | — |
| A&d Professional Plumbing | Kevin David De Leon Altun | — | (818) 538 1980 | Other | Reseda · Los Angeles County | — | — |
| A&d Sewer Specialist INC | Pedro Antonio Silvas | — | (818) 314 7107 | Other | Arleta · Los Angeles County | — | — |
| A&e Construction Group | Cardy Jhc Fang | — | (818) 928 2881 | GC, remodel, ADU | Alhambra · Los Angeles County | — | — |
| A&g General Construction INC | Gevorg Nmn Injyan | — | (818) 415 5194 | GC, remodel, ADU | Glendale · Los Angeles County | — | — |
| A&g Home Services INC DBA Airpro Solutions | David Isaiah Romero | — | (323) 776 9047 | HVAC | La Mirada · Los Angeles County | — | — |
| A&h Construction | Alireza Ghassemi | — | (310) 367 7981 | GC, remodel, ADU | North Hollywood · Los Angeles County | — | — |
| A&h Construction INC | Nicholas Allen Delanders | — | (818) 299 6463 | GC, remodel, ADU | Pacoima · Los Angeles County | — | — |
| A&j Technologies | Ronny Estuardo Cifuentes Lopez | — | (323) 571 8506 | Electricians | Los Angeles · Los Angeles County | — | — |
| A&k Welding | Jesus Manuel Armenta | — | (424) 200 7356 | Other | Lawndale · Los Angeles County | — | — |
| A&l General Construction INC | Luis Alberto Aquino Chavez | — | (323) 901 0314 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| A&m Construction And Consulting LLC | Anthony Michael Perez | — | (626) 241 6820 | GC, remodel, ADU | La Verne · Los Angeles County | — | — |
| A&p Crane Solutions Corp | Victor Alfonso Perez Arevalo | — | (818) 423 1753 | Other | Panorama City · Los Angeles County | — | — |
| A&r Automation INC | Abraham Eini | — | (213) 320 0214 | Electricians | Studio City · Los Angeles County | — | — |
| A&s Communications INC | Edwin Porfirio Hermosilla | — | (818) 402 5014 | GC, remodel, ADU | Palmdale · Los Angeles County | — | — |
| A&t Painting | Yunusov Timur | — | (818) 665 6684 | Windows, patio, painters | Chatsworth · Los Angeles County | — | — |
| A's Canvas INC | Martinez Arturo | — | (323) 702 7019 | Other | South El Monte · Los Angeles County | — | — |
| A's Concrete Corporation | Ester O'neal Stevens | — | (747) 388 1564 | Other | Panorama City · Los Angeles County | — | — |
| A's Construction | Castaneda Alonzo | — | (323) 818 6427 | GC, remodel, ADU | Compton · Los Angeles County | — | — |
| A's Plumbing Works INC | Jose David Alfaro Quintanilla | — | (310) 892 2013 | Other | San Pedro · Los Angeles County | — | — |
| A+ Construction | Son Phi Pham | — | (626) 443 9288 | GC, remodel, ADU | South El Monte · Los Angeles County | — | — |
| A+ Home Improvement INC | Yingying Wang | — | (626) 766 6999 | GC, remodel, ADU | Glendora · Los Angeles County | — | — |
| A+ Plumbing & Rootering INC | Zhanna Dallakyan | — | (818) 757 7741 | Other | North Hollywood · Los Angeles County | — | — |
| A+ Plumbing INC | Adolfo Madrigal | — | (818) 256 0092 | Other | Sylmar · Los Angeles County | — | — |
| A+ Tile Construction INC | Jimenez Tilapa Eutiquio | — | (818) 383 7912 | Other | Santa Clarita · Los Angeles County | — | — |
| A+ Traffic Management INC | Richard Jr Ullman | — | (213) 494 7154 | Other | Los Angeles · Los Angeles County | — | — |
| A-1 Air Duct Cleaning LLC | Aaron Thomas Krider | — | (480) 686 7266 | Other | Glendale · Los Angeles County | — | — |
| A-1 All American Roofing | Molly Ann Holm | — | (310) 320 0224 | Other roofers | Carson · Los Angeles County | — | — |