| A Allbright INC | Joshua Aaron Abramson | — | (661) 294 1159 | GC, remodel, ADU | Valencia · Los Angeles County | — | — |
| A Allison Painting | A Allison Painting | — | (530) 840 0110 | Windows, patio, painters | Mt Shasta · Siskiyou County | — | — |
| A Alvarado Painting | A Alvarado Painting | — | (714) 956 5425 | Windows, patio, painters | Anaheim · Orange County | — | — |
| A And A Electric | Raymond Richard Anderson | — | (916) 344 1019 | Electricians | Roseville · Placer County | — | — |
| A And A Electrical Systems INC | David Alejandro Aguirre Perez | — | (323) 952 1282 | Electricians | El Monte · Los Angeles County | — | — |
| A And A Home Repair And Remodel | Hugo Estuardo Alvarez | — | (323) 273 6885 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| A And B Electric Company INC | Theresa Ann Ford | — | (805) 444 3304 | Electricians | Camarillo · Ventura County | — | — |
| A And B Painting LLC | Silvana Michelle Pereira | julio@andybryanpainting.com | (650) 759 3457 | Windows, patio, painters | Redwood City · San Mateo County | — | — |
| A And C Custom Cabinets INC | Cesar Humberto Guerrero Campos | — | (818) 309 9545 | Other | Valencia · Los Angeles County | — | — |
| A And C Electrical | Juan C Argueta | — | (213) 255 1210 | Electricians | Los Angeles · Los Angeles County | — | — |
| A And D Construction | Baldemar Mancilla Barragan | amkryukov@gmail.com | (408) 600 7772 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| A And D Earthwork And Demolition INC | Antonio Espitia | — | (559) 348 3916 | Other | Orosi · Tulare County | — | — |
| A And D Electric | Duarte George | — | (310) 908 7572 | Electricians | Torrance · Los Angeles County | — | — |
| A And D Leak Detection | A And D Leak Detection | aandddetection@yahoo.com | (559) 476 6583 | Other | Clovis · Fresno County | — | — |
| A And D Paint Pro | A And D Paint Pro | — | (408) 401 7197 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| A And E Electric Company | Ricky Allen Alves | — | (510) 253 8193 | Electricians | Clearlake Oaks · Lake County | — | — |
| A And E Heating And Air Conditioning INC | Adam Michael Sauerbrun | — | (909) 835 0709 | HVAC | Yucaipa · San Bernardino County | — | — |
| A And E Heating And Cooling INC | Levik Pogosian | — | (818) 497 1471 | HVAC | Tujunga · Los Angeles County | — | — |
| A And F Electric | Arredondo Fernando | — | (818) 618 5216 | Electricians | North Hollywood · Los Angeles County | — | — |
| A And F Landscape Corporation | Luna Felipe | — | (619) 993 1758 | GC, remodel, ADU | Chula Vista · San Diego County | — | — |
| A And F Mcguire Electric Co | Adam Christopher Mcguire | — | (909) 252 8644 | Electricians | Chino Hills · San Bernardino County | — | — |
| A And G Concrete | Steve Dennis Ambrosini | — | (707) 832 6079 | GC, remodel, ADU | Fortuna · Humboldt County | — | — |
| A And G Construction Solutions INC | Andres Jr Chavez | — | (323) 691 2111 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| A And G Plumbing Services INC | Alvaro Gomez | — | (949) 498 8185 | Other | San Clemente · Orange County | — | — |
| A And G Tile | A And G Tile | info@agtile.com | (831) 818 4002 | Other | Watsonville · Santa Cruz County | — | — |
| A And H Electric Company INC | Henrik Rashidzadeh | — | (818) 430 5130 | Electricians | Glendale · Los Angeles County | — | — |
| A And H Glazing LLC | Hany Fathy Ibrahim | — | (626) 674 4011 | Windows, patio, painters | Baldwin Park · Los Angeles County | — | — |
| A And J Business Development Services LLC | Abdallah Hanna Al Bairuti | — | (661) 662 2533 | GC, remodel, ADU | Northridge · Los Angeles County | — | — |
| A And J Electrical Solutions INC | Joseph Anthony Magana | — | (909) 345-8731 | Electricians | Fillmore · Ventura County | — | — |
| A And K Construction And Realty INC | Kenny Chijian| Lui Chijian Lui | — | (626) 821 1919 | GC, remodel, ADU | Arcadia · Los Angeles County | — | — |
| A And L Benitez Electric | Rolando Ramos Benitez | — | (408) 750 4070 | Electricians | San Jose · Santa Clara County | — | — |
| A And L Construction | Paul Douglas Lange | — | (916) 617 7062 | GC, remodel, ADU | Sacramento · Sacramento County | — | — |
| A And L Electric Company | Rangel Armando | — | (650) 578 1854 | Electricians | San Mateo · San Mateo County | — | — |
| A And L Plumbing | A And L Plumbing | — | (831) 320 3613 | Other | Salinas · Monterey County | — | — |
| A And L Systems Solutions | A And L Systems Solutions | — | (909) 957 9201 | Other | Diamond Bar · Los Angeles County | — | — |
| A And M Construction INC | Alex Semerjian | — | (818) 424 3200 | Electricians | Glendale · Los Angeles County | — | — |
| A And M Flooring Design | Benjamin Charles Rowe | — | (209) 577 1035 | GC, remodel, ADU | Fairfield · Solano County | — | — |
| A And M Heating And Air Conditioning | Pavelich Michael | — | (818) 341 7757 | HVAC | Saugus · Los Angeles County | — | — |
| A And P Construction | Pourtaverdi Albert | — | (209) 648 4319 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| A And S Contracting | Ashok Kumar Singh | — | (650) 714 5493 | GC, remodel, ADU | Palo Alto · Santa Clara County | — | — |