| A & Son's Concrete INC | Armando Medina Jr Vargas | — | (909) 282 2164 | Other | Ontario · San Bernardino County | — | — |
| A & Sona Service | Houshang Zahedi | — | (310) 890 2614 | Other | Woodland Hills · Los Angeles County | — | — |
| A & T Construction | Alan Joseph Jackson | — | (619) 540 8602 | GC, remodel, ADU | Lakeside · San Diego County | — | — |
| A & T Euro Cabinetry LLC | Andre Trachsel | — | (858) 405 2233 | Other | La Mesa · San Diego County | — | — |
| A & T Stoneworks INC | Terry Lee Wick | — | (661) 816 7544 | Other | Palmdale · Los Angeles County | — | — |
| A & U Painting Co | Uriel Adalberto Gonzalez Medina | — | (408) 427 4371 | Windows, patio, painters | Madera · Madera County | — | — |
| A & V Contractors INC | David Tyrone Almendarez | — | (714) 525 3503 | GC, remodel, ADU | Fullerton · Orange County | — | — |
| A & V Drywall | A & V Drywall | — | (510) 815 3288 | Other | Alameda · Alameda County | — | — |
| A & V Painting & Decorating | Victor Manuel Useda | — | (818) 231 0453 | Windows, patio, painters | Winnetka · Los Angeles County | — | — |
| A & V Restoration Company INC | Valentin Arias Zepeda | — | (714) 760 1990 | GC, remodel, ADU | Santa Ana · Orange County | — | — |
| A & V Services | Alexander Gregory Sharp | info@a-v-services.com | (415) 725 1222 | GC, remodel, ADU | Novato · Marin County | — | — |
| A & W Air Conditioning & Heating | Alex Maynard Williams | — | (661) 304 1799 | HVAC | Bakersfield · Kern County | — | — |
| A & W Construction | William Lee Sheble | — | (530) 305 1510 | GC, remodel, ADU | El Dorado · El Dorado County | — | — |
| A & W General Contractor | A & W General Contractor | — | (562) 706 2858 | GC, remodel, ADU | Artesia · Los Angeles County | — | — |
| A & Y Asphalt Contractors INC | Jedidiah John Giese | — | (951) 340 4190 | Other | Norco · Riverside County | — | — |
| A & Y Expert Tree Service INC | Manuel Medardo Arenivar Chavez | — | (408) 624 7790 | Tree | San Jose · Santa Clara County | — | — |
| A & Y Sanitation Systems | Ayman Mohd Albaja | — | (818) 779 0403 | Other | Granada Hills · Los Angeles County | — | — |
| A & Z Decks & Stairs INC | Andrey Avramov Radev | — | (818) 359 1908 | GC, remodel, ADU | Burbank · Los Angeles County | — | — |
| A + Air Conditioning And Heating | Alvarez Sergio | — | (760) 601 4705 | HVAC | Indio · Riverside County | — | — |
| A + Air Cooling And Heating | Alan Bernell Peterson | — | (559) 627 8243 | HVAC | Visalia · Tulare County | — | — |
| A + Air Corp | Gary David Long | — | (909) 821 6359 | HVAC | Rancho Cucamonga · San Bernardino County | — | — |
| A + Builders | A + Builders | — | (909) 322 1595 | GC, remodel, ADU | Jurupa Valley · Riverside County | — | — |
| A + Cal's Construction | Calogero Ferruggia | — | (661) 645 9988 | GC, remodel, ADU | Stevenson Ranch · Los Angeles County | — | — |
| A + Concrete | Ashley Nicole Fotofili | — | (916) 822 0469 | Other | Sacramento · Sacramento County | — | — |
| A + Construction INC | Kenneth Walter Clausing | — | (831) 335 0128 | GC, remodel, ADU | Felton · Santa Cruz County | — | — |
| A + Demo INC | Ortiz Jency Leon | — | (323) 377 9171 | Other | Palmdale · Los Angeles County | — | — |
| A + Drapes & Blinds | A + Drapes & Blinds | — | (951) 805 7796 | Other | Perris · Riverside County | — | — |
| A + Electric | Enrique Jr Lopez | — | (310) 350 8151 | Electricians | Upland · San Bernardino County | — | — |
| A + Electric & Plumbing | Terteryan Ghukas | — | (818) 421 5290 | Electricians | Tujunga · Los Angeles County | — | — |
| A + Electric INC | Gigovic Enis | — | (408) 421 1464 | Electricians | Santa Clara · Santa Clara County | — | — |
| A + Electricians | Jose Antonio Sesma | — | (818) 309 6525 | Electricians | Reseda · Los Angeles County | — | — |
| A + Garage Door Co | Juan Manuel Mota | — | (562) 824 0079 | Other | Long Beach · Los Angeles County | — | — |
| A + General Construction INC | Chiu Kan Wong | — | (415) 602 2585 | HVAC | San Francisco · San Francisco County | — | — |
| A + Glass & Mirror INC | Santiago Pascasio Martinez | — | (818) 982 2001 | Windows, patio, painters | North Hollywood · Los Angeles County | — | — |
| A + Heating And Air Conditioning | Michael Anese Musa Haddad | — | (209) 366 3850 | HVAC | Stockton · San Joaquin County | — | — |
| A + Home Repair And Remodeling | Folke David | — | (925) 548 5535 | GC, remodel, ADU | Danville · Contra Costa County | — | — |
| A + Landscaping And Hauling Service | Hernandez David | — | (510) 604 6580 | Windows, patio, painters | Hayward · Alameda County | — | — |
| A + Millwork Casework Installations | Montoya Ricardo | — | (951) 642 1851 | Other | Fontana · San Bernardino County | — | — |
| A + Painting | Edmund Daniel Townsend | — | (925) 344 2208 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| A + Plumbing Co | Zhorzhik George Karapetyan | — | (818) 389 8994 | Other | Glendale · Los Angeles County | — | — |