| A D S Tile & Marble | Daniel Mejia | — | (831) 256 0012 | Other | Salinas · Monterey County | — | — |
| A D S Wallcovering | A D S Wallcovering | — | (408) 529 1769 | Windows, patio, painters | Capitola · Santa Cruz County | — | — |
| A D Security INC | Adam David Stelzer | — | (626) 255 1562 | Alarm and generators | Sierra Madre · Los Angeles County | — | — |
| A D T Lectric | A D T Lectric | — | (323) 240 2454 | Electricians | Los Angeles · Los Angeles County | — | — |
| A D Tile & Stone | A D Tile & Stone | — | (818) 635 6747 | Other | Glendale · Los Angeles County | — | — |
| A D Tile And Granite | Amandeep Singh Manesh | — | (209) 812 6412 | Other | Atwater · Merced County | — | — |
| A D Tony Cantelmo Development | A D Tony Cantelmo Development | — | (714) 313 7413 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| A D V Electrical Services INC | Richard Steven Thomas | — | (760) 956 2407 | Electricians | Hesperia · San Bernardino County | — | — |
| A D Wilson INC | Gail Marie Wilson | — | (951) 737 3822 | Other | Norco · Riverside County | — | — |
| A D Window Services | Daniel Anthony Caballero | — | (408) 396 6889 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| A Daniele & Company | Anthony Thomas Daniele | — | (707) 766 4235 | HVAC | San Francisco · San Francisco County | — | — |
| A Danish Construction Company | Madsen Thomas | — | (415) 350 5769 | GC, remodel, ADU | Sacramento · Sacramento County | — | — |
| A Dariano Construction | Anthony John Dariano | — | (408) 592 7609 | GC, remodel, ADU | Campbell · Santa Clara County | — | — |
| A David Construction | Amin Hector David | — | (714) 553 9700 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| A David Home Repairs / Improvement | Albert Aguilus David | — | (707) 315 0763 | GC, remodel, ADU | Vallejo · Solano County | — | — |
| A Davis Paving Co INC | John Uce | — | (530) 806 3458 | Other | Roseville · Placer County | — | — |
| A Doors Window & Screen INC | Mark Richard Simons | — | (949) 548 1191 | Windows, patio, painters | Costa Mesa · Orange County | — | — |
| A Doyon Construction | William Arthur Doyon | — | (916) 612 6856 | GC, remodel, ADU | Sacramento · Sacramento County | — | — |
| A Drain Doctor | A Drain Doctor | — | (626) 332 9984 | Other | Walnut · Los Angeles County | — | — |
| A Dub Electric | Andrew Williams Gabriel | — | (408) 242 7188 | Electricians | Oceanside · San Diego County | — | — |
| A Duin - It Roofing & Construction | Robby Lee Duin | — | (760) 633 2488 | Other roofers | Valley Center · San Diego County | — | — |
| A Duran Construction | Arturo Duran Velazquez | — | (408) 387 4783 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| A E A Plumbing INC | Armando Baez Torres | — | (480) 219 6276 | GC, remodel, ADU | Indio · Riverside County | — | — |
| A E Alliance Contractors | Oscar Sinai Bianchi | — | (323) 365 3738 | GC, remodel, ADU | Downey · Los Angeles County | — | — |
| A E Audio | Allen Edward Tremble | — | (858) 673 1675 | Electricians | San Diego · San Diego County | — | — |
| A E Building INC | Estrada-bernal Alejandro | — | (888) 213 8453 | HVAC | Chula Vista · San Diego County | — | — |
| A E C | A E C | — | (818) 731 4731 | Electricians | Burbank · Los Angeles County | — | — |
| A E C Construction | Catalano Giuseppe | — | (760) 600 0301 | GC, remodel, ADU | Rancho Mirage · Riverside County | — | — |
| A E C Electric | Brian Evans Shelton | — | (626) 398 3052 | Electricians | Pasadena · Los Angeles County | — | — |
| A E C Moreno Corporation | Hector Miguel Moreno | — | (909) 705 8505 | GC, remodel, ADU | Colton · San Bernardino County | — | — |
| A E Carlson Construction INC | Nora Lisa Espinosa | — | (951) 296 2233 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| A E Carlson Design & Build | Arthur Patrick Espinosa | info@aecdesignandbuild.com | (951) 296 2233 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| A E Construction | Estevez Alejandro | — | (714) 752 9018 | GC, remodel, ADU | Adelanto · San Bernardino County | — | — |
| A E Construction | Alfred Jr Espinosa | — | (661) 205 8949 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| A E Construction & Environmental Services | Enrique Antonio Jimenez | — | (562) 244 4609 | GC, remodel, ADU | Downey · Los Angeles County | — | — |
| A E Construction Services INC | Ian Isaac Spiszman | — | (818) 543 3930 | GC, remodel, ADU | Glendale · Los Angeles County | — | — |
| A E Contractors INC | Jose Maria Rivera | — | (707) 331 7226 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| A E D Construction | Aharoni Yitzhak | — | (818) 262 7272 | GC, remodel, ADU | Woodland Hills · Los Angeles County | — | — |
| A E D Contractors | Alfredo Diaz Rodriguez | — | (909) 374 2597 | Electricians | Diamond Bar · Los Angeles County | — | — |
| A E Electric | Albert Charles Ethier | — | (951) 250 4545 | Electricians | Alta Loma · San Bernardino County | — | — |