| A - Industrial Design / Build | Andrew Jason Hernandez | — | (213) 290 0091 | GC, remodel, ADU | Ontario · San Bernardino County | — | — |
| A - J Cabinets | A - J Cabinets | — | (661) 718 5717 | Other | Lancaster · Los Angeles County | — | — |
| A - K Aeration & Landscaping | Ken Lee Kincaid | — | (925) 984 6883 | Windows, patio, painters | Martinez · Contra Costa County | — | — |
| A - Lectric INC | Duc Huu Nguyen | eddie.haro@electricare.com | (858) 310 9391 | Electricians | San Diego · San Diego County | — | — |
| A - Line | Maria Elena Campos | — | (530) 624 4145 | GC, remodel, ADU | Chico · Butte County | — | — |
| A - Line Construction | Justin Todd Lane | — | (916) 230 0851 | GC, remodel, ADU | Folsom · Sacramento County | — | — |
| A - List Construction INC | Siton Boaz | — | (818) 915 4010 | Electricians | Porter Ranch · Los Angeles County | — | — |
| A - List Pressure Washing LLC | Cole Anthony Schoenthal | — | (805) 975 5877 | Other | Templeton · San Luis Obispo County | — | — |
| A - Locksmith - Craig | A - Locksmith - Craig | — | (831) 234 4025 | Other | Felton · Santa Cruz County | — | — |
| A - M Concrete | A - M Concrete | — | (760) 518 5007 | Other | Fallbrook · San Diego County | — | — |
| A - M Electric | Pedro Alexander Mejia | — | (818) 307 6490 | Electricians | Palmdale · Los Angeles County | — | — |
| A - M Fence Works | A - M Fence Works | — | (714) 675 4576 | Other | Santa Ana · Orange County | — | — |
| A - Mac Construction | Adrian Joseph Mc Glinchey | — | (415) 601 4698 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| A - N - W Construction INC | Brian Clifton Gore | — | (951) 354 6924 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| A - One Construction | Andrew Jacob Triphon | — | (510) 347 5400 | Other roofers | Fremont · Alameda County | — | — |
| A - One Construction/remodeling | Gus Kenneth Lopez | — | (818) 470 7915 | GC, remodel, ADU | Glendale · Los Angeles County | — | — |
| A - Plus Electric | Antonyan Mikhail | — | (858) 518 0271 | Electricians | Vista · San Diego County | — | — |
| A - Plus Maintenance INC | Edil Verzosa Evangelista | — | (949) 632 6028 | Electricians | Costa Mesa · Orange County | — | — |
| A - Plus Plumbing & Rooter | Ralph Dean Dohle | — | (949) 582 2814 | Other | Laguna Niguel · Orange County | — | — |
| A - Plus Seamless Rain Gutters | Jeffrey Allan Wedell | — | (530) 228 9669 | Other | Chico · Butte County | — | — |
| A - Plus Septic And Drain | Eric James Adams | — | (760) 844 2523 | Other | Yucca Valley · San Bernardino County | — | — |
| A - Plus Tec Construction Co | Joshua Seung Il Lee | — | (626) 833 8873 | GC, remodel, ADU | Chino Hills · San Bernardino County | — | — |
| A - Plus Window Tint Deluxe | Werner Josef Schoenauer | — | (310) 946 6707 | Other | Redondo Beach · Los Angeles County | — | — |
| A - Quality Painting | A - Quality Painting | wweeiihhuuaanngg@gmail.com | (209) 566 5351 | Windows, patio, painters | Modesto · Stanislaus County | — | — |
| A - R - M Construction | Dock Rahim Mateen | — | (209) 482 8553 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| A - R - O - D General Construction | Federico Alberto Rodriguez | — | (661) 599 2273 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| A - R Smit & Associates | Ronald Clemens Smit | — | (916) 997 4600 | GC, remodel, ADU | Lincoln · Placer County | — | — |
| A - Rayman Electric INC | Ramon Francisco Bennett | — | (760) 807 1007 | Electricians | Escondido · San Diego County | — | — |
| A - Shining Painting Co | Dong Hyun Kim | — | (213) 385 4412 | Windows, patio, painters | La Canada · Los Angeles County | — | — |
| A - Star Glass INC | Jack Victor Hargis | — | (714) 846 2343 | Windows, patio, painters | Huntington Beach · Orange County | — | — |
| A - T E A M Contractors INC | James Robert Codde | admin@ateamcontractors.com | (760) 758 5777 | GC, remodel, ADU | Oceanside · San Diego County | — | — |
| A - Tak Fire Protection | Mirzakhanian Vrej | — | (818) 806 8066 | Electricians | La Crescenta · Los Angeles County | — | — |
| A - Team | A - Team | — | (760) 630 4987 | Windows, patio, painters | Oceanside · San Diego County | — | — |
| A - Team Builders INC | Netanel Eliezer Skolnick | — | (818) 313 9990 | GC, remodel, ADU | Woodland Hills · Los Angeles County | — | — |
| A - Team Construction | William Glen Garrigan | — | (209) 612 4634 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| A - Team Construction INC | Yoon Jae| Lim Yoon-jae Lim | — | (408) 482 2565 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| A - Team Electric | Tynda Aleksandr | — | (209) 918 3320 | Electricians | Hughson · Stanislaus County | — | — |
| A - Team Painting Corporation | Ho Jung Park | interested@domainmarket.com | (408) 830 9327 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| A - Team Residential Remodeling | A - Team Residential Remodeling | — | (619) 578 4459 | GC, remodel, ADU | La Mesa · San Diego County | — | — |
| A - Team Tile And Stone | Anthony Gabriel Martinez | — | (760) 673 9561 | Other | Indio · Riverside County | — | — |