| A Leo Landscaping | A Leo Landscaping | — | (760) 500 6181 | Windows, patio, painters | Escondido · San Diego County | — | — |
| A Leon Building | A Leon Building | — | (209) 256 6177 | GC, remodel, ADU | Pioneer · Amador County | — | — |
| A Lighting INC | Levy Adam | hyy@alighting.cn | (818) 339 8985 | Electricians | Sylmar · Los Angeles County | — | — |
| A Line Construction | Jason Ely Deangelis | — | (916) 747 1824 | GC, remodel, ADU | Foresthill · Placer County | — | — |
| A List Builders INC | Marciano Ben | — | (747) 276 8063 | GC, remodel, ADU | Sherman Oaks · Los Angeles County | — | — |
| A List Development INC | Aharon Shlomo | — | (818) 625 4134 | GC, remodel, ADU | Van Nuys · Los Angeles County | — | — |
| A Local Plumber INC | Christopher Thomas Hogan | interested@domainmarket.com | (858) 206 9994 | Other | San Marcos · San Diego County | — | — |
| A Lock & A Safe Place | Kurtis Phillip Kerby | — | (818) 324 2238 | Other | Tarzana · Los Angeles County | — | — |
| A Lopez & Sons INC | Armida Ruth Gallegos | — | (909) 621 6001 | Other | Chino · San Bernardino County | — | — |
| A Lopez Concrete | A Lopez Concrete | hello@rfuenzalida.com | (909) 831 5109 | Other | Yucaipa · San Bernardino County | — | — |
| A Lost Art INC | Joseph Douglas Jr Bryant | — | (415) 392 7577 | Other | Petaluma · Sonoma County | — | — |
| A Luna Land & Hardscape INC | Armando Jr Luna | — | (310) 221 2315 | Windows, patio, painters | Torrance · Los Angeles County | — | — |
| A M & G Electric | George Victor Vera | — | (323) 304 6777 | Electricians | Whittier · Los Angeles County | — | — |
| A M - P M Remodeling | Nagy/nick Yassa | — | (714) 827 0522 | GC, remodel, ADU | Buena Park · Orange County | — | — |
| A M A C Construction & Restoration | Tyler Lynn Douglass | — | (925) 356 2619 | Electricians | Walnut Creek · Contra Costa County | — | — |
| A M A Construction & Coating INC | Mesa Martha | — | (909) 575 9765 | GC, remodel, ADU | Pomona · Los Angeles County | — | — |
| A M A Construction Incorporated | Gutierrez Miguel | — | (323) 864 1648 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| A M A Construction Services INC | Ahmad Mahmoud El-Mustapha | — | (626) 859 0222 | GC, remodel, ADU | Covina · Los Angeles County | — | — |
| A M A Glass | A M A Glass | — | (510) 453 7030 | Windows, patio, painters | Emeryville · Alameda County | — | — |
| A M A Hardwood Floors INC | Danny Miro | — | (323) 937 3563 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| A M A Medina / Construction | Alaa Mohamed Abdelwahab | — | (408) 799 4071 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| A M A Medina Construction | Alaa Mohamed Abdelwahab | — | (408) 799 4070 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| A M A Plastering | A M A Plastering | — | (818) 489 8136 | Other | Canoga Park · Los Angeles County | — | — |
| A M Access Control INC | Martin Hernandez | — | (800) 421 1924 | Other | Fairfield · Solano County | — | — |
| A M Acoustics INC | Gali Azulay | — | (818) 758 0000 | GC, remodel, ADU | Tarzana · Los Angeles County | — | — |
| A M B Cabinetry | A M B Cabinetry | — | (916) 504 0539 | Other | Fair Oaks · Sacramento County | — | — |
| A M B Construction | Xueqian Zhu | — | (626) 377 7877 | GC, remodel, ADU | Temple City · Los Angeles County | — | — |
| A M B Enterprises INC | Mark Charles Lawler | — | (818) 353 7195 | GC, remodel, ADU | Sunland · Los Angeles County | — | — |
| A M B Glass Corp | Angel Mauricio Balan Lemus | — | (818) 941 4334 | Windows, patio, painters | Van Nuys · Los Angeles County | — | — |
| A M Backflow | A M Backflow | — | (408) 761 4770 | Other | Saratoga · Santa Clara County | — | — |
| A M Backhoe | A M Backhoe | — | (209) 597 5363 | Other | Tracy · San Joaquin County | — | — |
| A M C Boilers | Carvajal Angel Murguia | — | (323) 210 9481 | HVAC | Huntington Park · Los Angeles County | — | — |
| A M C Builders | A M C Builders | — | (310) 567 5036 | GC, remodel, ADU | Hawthorne · Los Angeles County | — | — |
| A M C Builders INC | Martin Vasquez-Ramirez | — | (415) 423 4399 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| A M C Electrical Specialist INC | Carlos Uriarte | — | (323) 533 7684 | Electricians | South Pasadena · Los Angeles County | — | — |
| A M C Framing Enterprises INC | Sean Adam Hale | — | (909) 389 1456 | GC, remodel, ADU | Yucaipa · San Bernardino County | — | — |
| A M C General Construction Co | Anthony Jr Carmona | — | (626) 922 1714 | GC, remodel, ADU | Covina · Los Angeles County | — | — |
| A M C Glass Co INC | Nat Quang Truong | information@amcglass.com | (408) 288 8206 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| A M C Home Theatre | A M C Home Theatre | — | (626) 941 1008 | Other | Hacienda Heights · Los Angeles County | — | — |
| A M C Lions Roofing | Anyello Abraham Molina-Carreto | — | (323) 596 6586 | Other roofers | Bell · Los Angeles County | — | — |