| Adu Building Company | Howard A Hy | — | (323) 484 2433 | GC, remodel, ADU | Long Beach · Los Angeles County | — | — |
| Adu By Luxury Construction INC | Oren Sirota | — | (818) 300 3334 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Adu Coach Construction | Russell Glenn Gerber | aducoachconstruction@gmail.com | (260) 229 0835 | GC, remodel, ADU | Oakdale · Stanislaus County | — | — |
| Adu Concepts | Thomas Joseph Smet | — | (818) 962 6900 | GC, remodel, ADU | Tarzana · Los Angeles County | — | — |
| Adu Construction Contracting | Jose Dimas Avila | — | (877) 969 2272 | GC, remodel, ADU | Long Beach · Los Angeles County | — | — |
| Adu Contractors Sacramento | Adu Contractors Sacramento | — | (916) 878-0388 | GC, remodel, ADU | Sacramento · Sacramento County | — | — |
| Adu Crew LLC | Brian Christopher O'leary | — | (925) 979 5450 | GC, remodel, ADU | Clayton · Contra Costa County | — | — |
| Adu Custom Home Builders LLC | Andrew Angelo Valenzuela | — | (951) 264 7095 | GC, remodel, ADU | Norco · Riverside County | — | — |
| Adu Designers & Builders | Basil Fawaz Ammari | — | (949) 279 7410 | GC, remodel, ADU | Brea · Orange County | — | — |
| Adu Express Construction LLC | Mofakham Arash | — | (213) 400 1906 | GC, remodel, ADU | Gardena · Los Angeles County | — | — |
| Adu Factory INC | Nami Marandi | — | (949) 929 1839 | GC, remodel, ADU | Newport Beach · Orange County | — | — |
| Adu Homes Construction | Juan Gerardo Zuniga | — | (818) 355 2343 | GC, remodel, ADU | Valencia · Los Angeles County | — | — |
| Adu HVAC Monterey Park | Adu HVAC Monterey Park | — | (626) 244-2036 | HVAC | Monterey Park · Monterey County | — | — |
| Adu Installer | Adu Installer | — | (949) 342 4482 | GC, remodel, ADU | Rancho Santa Margarita · Orange County | — | — |
| Adu O-side | Colin James Pond | — | (760) 936 2223 | GC, remodel, ADU | Oceanside · San Diego County | — | — |
| Adu Palo Alto | James Michael Witt | kelly@adupaloalto.com | (650) 885 6915 | GC, remodel, ADU | Palo Alto · Santa Clara County | — | — |
| Adu Plumbing LLC | Miguel Angel Perez | — | (951) 795 4874 | Other | Winchester · Riverside County | — | — |
| Adu Pro 1 INC | Ken Lee | — | (951) 415 3705 | GC, remodel, ADU | Glendora · Los Angeles County | — | — |
| Adu Rc Builders | Raffi Sarkis Dersarkissian | — | (818) 400 8218 | GC, remodel, ADU | Glendale · Los Angeles County | — | — |
| Adu San Mateo LLC | Elie Wadih Alchaer | — | (650) 200-2040 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| Adu Solutions La | Felix David Hurtado | — | (840) 229 0073 | GC, remodel, ADU | Upland · San Bernardino County | — | — |
| Adu-builds LLC | Tiffany Ann Bulowski | — | (949) 241 9044 | GC, remodel, ADU | Tustin · Orange County | — | — |
| Adu-container Construction Company | Dragan Boroja | — | (949) 302 6866 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Adu365 | Gene Randall Hacker | — | (714) 888 2816 | GC, remodel, ADU | Santa Ana · Orange County | — | — |
| Adu4life INC | James Edward Stalie | eben@eyebytes.com | (925) 788 6018 | GC, remodel, ADU | Newcastle · Placer County | — | — |
| Adujustforu INC | Bogdan Ryczkowski | — | (650) 280 5892 | GC, remodel, ADU | San Martin · Santa Clara County | — | — |
| Aduma INC | Chaim Yunger | — | (805) 743 9630 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| Adus Master INC | Chang Yup Lee | — | (310) 595 8482 | GC, remodel, ADU | Arcadia · Los Angeles County | — | — |
| Adv Constructions INC | Avis Avanesyan | — | (424) 422 0040 | GC, remodel, ADU | Glendale · Los Angeles County | — | — |
| Advacned Insulation System | Matthew Rene Hodlin | — | (760) 468 0317 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Adval Construction | Adolfo Antonio Valencia Loza | — | (707) 704 7684 | GC, remodel, ADU | Vallejo · Solano County | — | — |
| Adval Construction INC | Alan Richard Stubbs | — | (925) 324 4438 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Advalue Construction INC | Zhilong Zhou | — | (949) 899 7888 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Advan Corp | Babrak Noor | — | (818) 233 7551 | GC, remodel, ADU | Burbank · Los Angeles County | — | — |
| Advance Air & Electric | Harison Hedayat | — | (916) 257 8409 | HVAC | Folsom · Sacramento County | — | — |
| Advance Air Conditioning Heating | Kamal A Andrawes | — | (310) 818 9510 | HVAC | Torrance · Los Angeles County | — | — |
| Advance Air Duct Cleaning | Angela Marie Moreland | — | (661) 342 9348 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Advance Air Solutions | Luis Ghabriel Ruiz Galvis | — | (818) 749 5029 | HVAC | Winnetka · Los Angeles County | — | — |
| Advance Allstar Restoration | Mary Sarafyan | — | (424) 336 3333 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| Advance America Coatings | Isaac Caraveo | — | (323) 677 3496 | Windows, patio, painters | San Bernardino · San Bernardino County | — | — |