| A & A Tree Service INC | Javier Carrillo | — | (310) 559 3628 | Tree | Hacienda Heights · Los Angeles County | — | — |
| A & J Tree INC | Jose Guadalupe Jauregui | — | (818) 321 3741 | Tree | Reseda · Los Angeles County | — | — |
| A Sandoval Tree Service INC | Alfredo Junior Sandoval | — | (818) 455 3368 | Tree | Arleta · Los Angeles County | — | — |
| A-1 Pacific Tree Maintenance | A-1 Pacific Tree Maintenance | — | (661) 755 4949 | Tree | Palmdale · Los Angeles County | — | — |
| A1ex Tree Service Corp | Jazmin Monserrat Rocha | — | (626) 324 0846 | Tree | Azusa · Los Angeles County | — | — |
| Abelardo Mejia | Abelardo Mejia | — | (909) 236 9836 | Tree | Pomona · Los Angeles County | — | — |
| Above & Beyond Tree Service INC | Brian Hugh Ordelheide | — | (818) 719 9826 | Tree | Woodland Hills · Los Angeles County | — | — |
| Ace Tree Service INC | Jimenez Daniel | — | (818) 362 9071 | Tree | Sylmar · Los Angeles County | — | — |
| Acosta Tree Service | Ruben Richard Acosta | — | (562) 328 9819 | Tree | Covina · Los Angeles County | — | — |
| Acotillo Tree Service INC | Marvin Alberto Contreras | — | (323) 314 6294 | Tree | Los Angeles · Los Angeles County | — | — |
| Affordable Tree Care | Affordable Tree Care | — | (562) 846 7589 | Tree | Lynwood · Los Angeles County | — | — |
| Affordable Tree Experts INC | Cristian Miguel Chamorro | — | (818) 821 5717 | Tree | Studio City · Los Angeles County | — | — |
| Alan Emanuel Leyva | Alan Emanuel Leyva | — | (562) 322 7940 | Tree | Pico Rivera · Los Angeles County | — | — |
| Aleman Tree Service INC | Judith Elizabeth Membreno | — | (818) 645 0073 | Tree | Arleta · Los Angeles County | — | — |
| Alexanders Tree Service | James Randolph Smith | — | (818) 248 4164 | Tree | Tujunga · Los Angeles County | — | — |
| All About Trees | All About Trees | — | (818) 340 1820 | Tree | West Hills · Los Angeles County | — | — |
| All Phases Of Tree Care | All Phases Of Tree Care | — | (310) 617 6149 | Tree | Los Angeles · Los Angeles County | — | — |
| Amazon Tree Service INC | Leobardo Perez | — | (626) 487 1670 | Tree | Pasadena · Los Angeles County | — | — |
| Anderson Tree Experts | Anderson Tree Experts | — | (818) 353 7366 | Tree | Tujunga · Los Angeles County | — | — |
| Angel's Lawn & Tree Service | Angel's Lawn & Tree Service | — | (310) 753-8199 | Tree | Los Angeles · Los Angeles County | — | — |
| Any Kind Of Tree Service | Fernando Jr Armas | — | (310) 473 6439 | Tree | Wilmington · Los Angeles County | — | — |
| Aper's Tree Service INC | Reshdouni Arthur Yakhaman | — | (818) 232 1177 | Tree | Sunland · Los Angeles County | — | — |
| Arbor Care | Mark Anthony Orejel | — | (818) 938 7528 | Tree | Santa Fe Springs · Los Angeles County | — | — |
| Art's Tree Service | Arturo Cardenas Cardenas | — | (323) 574 0498 | Tree | Cerritos · Los Angeles County | — | — |
| Artist Tree Service | Jose Luis Virgen | — | (818) 486 6978 | Tree | Newhall · Los Angeles County | — | — |
| Asap Tree Service | Rosa Ruano | — | (747) 888 7132 | Tree | Winnetka · Los Angeles County | — | — |
| Avel Rocha | Avel Rocha | — | (818) 263 2634 | Tree | Arleta · Los Angeles County | — | — |
| Bar's Tree Service & Landscape INC | Brian Anthony Reynoso | — | (818) 813 1406 | Tree | Panorama City · Los Angeles County | — | — |
| Bay Cities Tree Preservation | Tracy Christine Ryan-Johnson | — | (310) 454 6547 | Tree | Pacific Palisades · Los Angeles County | — | — |
| Beauty Tree Service And Maintenance INC | Gladis Margarita Turcios | — | (818) 849 7044 | Tree | Reseda · Los Angeles County | — | — |
| Best Valley Tree Services INC | Cuahutemoc Virgen | — | (818) 949 8733 | Tree | Sylmar · Los Angeles County | — | — |
| Bestcoast Tree Service - Los Angeles | Bestcoast Tree Service - Los Angeles | — | (323) 483-4125 | Tree | Los Angeles · Los Angeles County | — | — |
| Big Green Tree Service INC | Elizabeth Guadalupe Garcia | — | (818) 624 5063 | Tree | Sylmar · Los Angeles County | — | — |
| Bloom Tree Care INC | Loesa Sanchez Ruby | — | (323) 896 5764 | Tree | South Gate · Los Angeles County | — | — |
| Bmc Landscaping INC DBA Bmc Tree Service | Estela Guadalupe Cisneros- | — | (562) 200 3705 | Tree | Long Beach · Los Angeles County | — | — |
| Bts Maint | Bts Maint | — | (626) 963 2615 | Tree | Glendora · Los Angeles County | — | — |
| Bustamante Tree Service INC | Luis Antonio Gonzalez | — | (909) 489 3331 | Tree | South Gate · Los Angeles County | — | — |
| C P Tree Trimming & Gardening A Partnership | Silvia Gonzalez Pulido | — | (310) 306 4439 | Tree | Mar Vista · Los Angeles County | — | — |
| California Green Tree Care INC | Italo Flores | info@californiagreentreecare.com | (818) 799 5924 | Tree | Studio City · Los Angeles County | — | — |
| California Tree Design INC | Kiersten Lynn Magana | — | (562) 652 6459 | Tree | Whittier · Los Angeles County | — | — |