| A-star Sign Co | Gyultemiryan Andranik | — | (818) 599 4714 | Other | North Hollywood · Los Angeles County | — | — |
| A-sure Builders | Mario Joel Salguero | — | (818) 429 1048 | GC, remodel, ADU | Tarzana · Los Angeles County | — | — |
| A-t Counter Tops DBA A-t Tile | Salgado Adrian Gonzalez | — | (916) 622 2729 | Other | Roseville · Placer County | — | — |
| A-t Wanzer Grading And Excavating INC | Anthony James Wanzer | — | (707) 262 0799 | Other | Lakeport · Lake County | — | — |
| A-tach Construction & Engineering INC | Erik Scott Hinkey | — | (916) 709 4762 | GC, remodel, ADU | Newcastle · Placer County | — | — |
| A-team Construction | Guillermo Louis Delgado | — | (707) 580 4584 | Electricians | Dixon · Solano County | — | — |
| A-team Drains INC | Marcos Aquino | — | (760) 844 0296 | Other | Desert Hot Springs · Riverside County | — | — |
| A-team Electric LLC | Luis Miguel Licea | — | (951) 255 5911 | Electricians | Sacramento · Sacramento County | — | — |
| A-team Energy Solutions INC | Saki Sharan Quintero-Shawar | — | (831) 334 8575 | Electricians | Freedom · Santa Cruz County | — | — |
| A-team Garage Doors | A-team Garage Doors | — | (805) 404 1517 | Other | Oxnard · Ventura County | — | — |
| A-team Heating And Air Conditioning | A-team Heating And Air Conditioning | — | (661) 483 0563 | HVAC | Lancaster · Los Angeles County | — | — |
| A-team Modular Furniture Installation INC | Donald David Lowman | — | (916) 968 8481 | Other | Citrus Heights · Sacramento County | — | — |
| A-team Pro Remodeling INC | Gerson Josue Moreno | — | (562) 688 5277 | GC, remodel, ADU | Norwalk · Los Angeles County | — | — |
| A-team Remodeling | Deborah Lisseth Gutierrez | — | (909) 277 5199 | GC, remodel, ADU | Grand Terrace · San Bernardino County | — | — |
| A-team Renovations Corp | Hector Alejandro Castillo Gonzalez | — | (408) 202 0318 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| A-team Restoration INC | Steven William Krebs | — | (916) 582 0388 | GC, remodel, ADU | Orangevale · Sacramento County | — | — |
| A-team Specialized Services Corp DBA K2 Home Services | Cresencio Lomas | — | (925) 667 8547 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| A-tech Systems INC | Bill Jay Amparano | — | (909) 444 9695 | Electricians | Hacienda Heights · Los Angeles County | — | — |
| A-tek Construction | Ace Pekoanthony Aumoeualogo | — | (951) 221 7174 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| A-tex Plumbing | A-tex Plumbing | — | (619) 549 3522 | Other | San Diego · San Diego County | — | — |
| A-tomic Construction & Electric | Thomas William Jr Stinson | — | (916) 410 1886 | HVAC | West Sacramento · Yolo County | — | — |
| A-town Av INC | James William Allen | — | (805) 462 2732 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| A-town Electric | Ryan James Reed | info@atownelectric.com | (805) 296 8765 | Electricians | Atascadero · San Luis Obispo County | — | — |
| A-turf Services INC | Juan Carlos Arias Flores | — | (619) 757 6838 | Other | San Diego · San Diego County | — | — |
| A-twister Excavation INC | Fridman Ami | — | (818) 616 4204 | Other | Van Nuys · Los Angeles County | — | — |
| A-viking Plumbing & Fire Protection | A-viking Plumbing & Fire Protection | — | (530) 518 4117 | GC, remodel, ADU | Greenwood · El Dorado County | — | — |
| A-wong Construction | Wong Aaron | — | (626) 327 3328 | GC, remodel, ADU | Arcadia · Los Angeles County | — | — |
| A-z Builders & Design INC | Luis Adan Flores | — | (310) 409 6197 | GC, remodel, ADU | Van Nuys · Los Angeles County | — | — |
| A-z Building Solutions LLC | Miguel Hernandez | — | (818) 355 4427 | GC, remodel, ADU | Sun Valley · Los Angeles County | — | — |
| A-z Commercial And Residential Electrical | Cilliers Barry | — | (510) 917 1192 | Electricians | Hayward · Alameda County | — | — |
| A-z Construction Enterprises INC | Ara Dimitian | — | (562) 531 4801 | GC, remodel, ADU | Paramount · Los Angeles County | — | — |
| A-z Construction Projects | Seyedmansour Sajed | — | (310) 804 2542 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| A-z General Construction INC | Jose Manuel Gonzalez | — | (323) 742 2296 | GC, remodel, ADU | Compton · Los Angeles County | — | — |
| A-z Glazing Corporation | Yi Liang | — | (626) 248 0662 | Windows, patio, painters | South El Monte · Los Angeles County | — | — |
| A-z Home Improvements | A-z Home Improvements | — | (559) 308 1412 | GC, remodel, ADU | Visalia · Tulare County | — | — |
| A-z Plumbing & Tankless | Garen Avetisyan | — | (818) 524 8276 | Other | North Hollywood · Los Angeles County | — | — |
| A-z Plumbing INC | Vladimir Reese | — | (925) 399 7779 | Other | Oakley · Contra Costa County | — | — |
| A-z Pool & Spa | A-z Pool & Spa | — | (310) 325 1059 | Electricians | Torrance · Los Angeles County | — | — |
| A-z Property Services | Jose Andrew Galindo | — | (714) 910 3160 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| A-z Restoration INC | Tamir Avi Levi | — | (818) 983 4087 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |