| Ad Contractor | Ad Contractor | — | (714) 342 7791 | GC, remodel, ADU | Placentia · Orange County | — | — |
| Ad Design And Construction | Djalali Ardalan | — | (650) 387 9272 | GC, remodel, ADU | Redwood City · San Mateo County | — | — |
| Ad Electric | Daniel Alex Levine | — | (949) 735 6931 | Electricians | Long Beach · Los Angeles County | — | — |
| Ad Electrical Advertising INC | Paul Rui-Chong Wu | — | (626) 448 1166 | Other | Rosemead · Los Angeles County | — | — |
| Ad Elite Construction INC | Aaron Delgadillo | — | (323) 818 9581 | GC, remodel, ADU | Whittier · Los Angeles County | — | — |
| Ad Fence Company INC | Andrew Joseph Villasenor | — | (714) 292 9783 | GC, remodel, ADU | Whittier · Los Angeles County | — | — |
| Ad Flooring | Alonso Arturo Diaz | — | (714) 486 7220 | Other | Garden Grove · Orange County | — | — |
| Ad Great Construction INC | Donnovin Duy Nguyen | — | (909) 525 5446 | GC, remodel, ADU | Garden Grove · Orange County | — | — |
| Ad Hardscapes Design | Ad Hardscapes Design | — | (916) 470 0817 | Windows, patio, painters | Herald · Sacramento County | — | — |
| Ad Hern Construction INC | Hernandez Adrian | — | (661) 496 6702 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| Ad Image Advertising | Jenia Victorovna Rayskaya | — | (408) 499 9622 | Other | San Jose · Santa Clara County | — | — |
| Ad Installs Corp | Vahe Krikor Tamamian | — | (818) 817 1682 | GC, remodel, ADU | Chatsworth · Los Angeles County | — | — |
| Ad Insulation | Ad Insulation | alfredo@adinsulation.com | (209) 640 6379 | Other | Tracy · San Joaquin County | — | — |
| Ad Landscape INC | Antonio Munoz Jr Dominguez | — | (916) 265 2745 | Windows, patio, painters | Sacramento · Sacramento County | — | — |
| Ad Magellan | Paul Lavan Reyes | info@admagellan.com | (760) 442 5574 | GC, remodel, ADU | Vista · San Diego County | — | — |
| Ad Manfred | Ad Manfred | — | (617) 201 3362 | GC, remodel, ADU | Laguna Hills · Orange County | — | — |
| Ad Mechanical INC | Alexander Derg | — | (323) 842 5515 | HVAC | Granada Hills · Los Angeles County | — | — |
| Ad Mechanical Services INC | Adlan Cherkesbiev | — | (510) 240 9011 | HVAC | Burlingame · San Mateo County | — | — |
| Ad Metal Building INC | Agustin Diaz-Diaz | — | (909) 343 0210 | Other | San Bernardino · San Bernardino County | — | — |
| Ad Precision Construction INC | Alan Long Vu Du | — | (415) 881-7005 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Ad Pro Painting LLC | Eduardo Arturo Paniagua | — | (415) 525 0604 | Windows, patio, painters | Daly City · San Mateo County | — | — |
| Ad Remodeling | Gomez Jesse Aranzolo | — | (323) 947 9404 | GC, remodel, ADU | Compton · Los Angeles County | — | — |
| Ad Remodeling & Construction INC | Guy Morris Samipur | — | (818) 216 4697 | GC, remodel, ADU | West Hills · Los Angeles County | — | — |
| Ad Tech Electric INC | Artak Davtyan | — | (323) 393 5557 | Electricians | Porter Ranch · Los Angeles County | — | — |
| Ad Window Tinting | Ad Window Tinting | — | (424) 274 1448 | Other | Santa Monica · Los Angeles County | — | — |
| Ad-in Incorporated | Matthew John Bishop | — | (510) 656 6700 | Other | Fremont · Alameda County | — | — |
| Ada Builders INC | Assouline David | — | (818) 930 6327 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| Ada Compliance Masters | Ada Compliance Masters | john@ada-cm.com | (818) 470 4344 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Ada Compliance Professionals INC | Mark Stephen Tudor | — | (424) 262 9002 | GC, remodel, ADU | Pasadena · Los Angeles County | — | — |
| Ada Electric INC | Alejandro Jose De Anda | — | (760) 994 7073 | Electricians | Carlsbad · San Diego County | — | — |
| Ada General Eng INC | Arthur Anthony Jr Apodaca | — | (805) 807 9882 | Other | Oxnard · Ventura County | — | — |
| Ada Mechanical INC | Arameh Dilanchian | — | (818) 391 8046 | HVAC | Porter Ranch · Los Angeles County | — | — |
| Ada Pro Construction | Arellano Arturo Hernandez | — | (510) 590 7506 | GC, remodel, ADU | Vallejo · Solano County | — | — |
| Ada Roofing INC | Aureliano Jr Flores | — | (805) 317 1215 | Other roofers | Oxnard · Ventura County | — | — |
| Adagio Woodworking | Adagio Woodworking | — | (818) 707 4542 | GC, remodel, ADU | Agoura Hills · Los Angeles County | — | — |
| Adail Bastos INC DBA Adail Bastos Roofing | Adail Amaral Bastos | adail@bastosroofing.com | (619) 534 9663 | Other roofers | San Diego · San Diego County | — | — |
| Adair Const | Adair Const | — | (916) 425 7278 | GC, remodel, ADU | Camino · El Dorado County | — | — |
| Adair Construction | John Jay Adair | — | (916) 223 7408 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Adair Construction | Chris Francis Adair | — | (916) 803 7508 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| Adair Custom Builders | Adair Custom Builders | — | (310) 864 6648 | GC, remodel, ADU | Manhattan Beach · Los Angeles County | — | — |