| Active Integration | Joshua Anthony E Silva | — | (408) 840 3736 | Other | Gilroy · Santa Clara County | — | — |
| Acton Construction INC | Stanley Scott Acton | — | (408) 369 1103 | GC, remodel, ADU | Campbell · Santa Clara County | — | — |
| Acumen Construction Management INC | Theodore Conrad Curtis | — | (408) 903 9302 | GC, remodel, ADU | Saratoga · Santa Clara County | — | — |
| Ad Image Advertising | Jenia Victorovna Rayskaya | — | (408) 499 9622 | Other | San Jose · Santa Clara County | — | — |
| Adam Global Construction INC | Ahmed Alaaeldin | — | (408) 568 8666 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Adam Plumbing | Adam Plumbing | — | (650) 248 4868 | Other | Palo Alto · Santa Clara County | — | — |
| Adam's Fire Stop | Adam's Fire Stop | — | (650) 690 4542 | Other | San Jose · Santa Clara County | — | — |
| Adamah Co | Isaiah Michael Clapp | — | (650) 382 3405 | Other | San Jose · Santa Clara County | — | — |
| Adams Brothers Construction | Steve Bruce Adams | — | (408) 210 3885 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Adamson Construction | Sean Emory Adamson | — | (408) 978 7594 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Adanac Fire Protection INC | Donald John Wardstrom | — | (408) 262 0400 | Other | Milpitas · Santa Clara County | — | — |
| Adaptive Systems INC | Christopher Daniel Smith | — | (408) 206 2875 | Other | Morgan Hill · Santa Clara County | — | — |
| Adara Landscapes INC | Valdivia Martin Gonzalez | — | (408) 775 9160 | Windows, patio, painters | Mountain View · Santa Clara County | — | — |
| Add Construction | Kenneth Vo | — | (408) 314 0760 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Addison Electric | Stephen Edward Addison | — | (408) 600 4190 | Electricians | San Jose · Santa Clara County | — | — |
| Addlife | Lorie Lee Townsend | hr@addlife.com | (650) 556 9430 | Windows, patio, painters | Sunnyvale · Santa Clara County | — | — |
| Ademo Construction INC | Cesar Martinez Ponce | — | (408) 914 1126 | Electricians | San Jose · Santa Clara County | — | — |
| Adf Construction | Allen Dean Francis | — | (408) 502 0763 | GC, remodel, ADU | Gilroy · Santa Clara County | — | — |
| Adg Construction INC | Quiroz Gonzalo | — | (408) 314 7733 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Adi Global Distribution - Santa Clara | Adi Global Distribution - Santa Clara | becomeacustomer@adiglobal.com | (877) 228-6739 | Alarm and generators | Santa Clara · Santa Clara County | — | — |
| Admin Networks INC | Wai Lam Lui | — | (408) 200 9881 | Other | San Jose · Santa Clara County | — | — |
| Admond Construction INC | Kelson Kang Chu | — | (650) 619 8968 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Adore Homes INC | Tomer Ginsberg | info@adore-homes.com | (650) 353 7455 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| Adorno Construction | Frank Iii Adorno | plans@adornoconstruction.com | (408) 369 8675 | GC, remodel, ADU | Campbell · Santa Clara County | — | — |
| Adorno Construction INC | Frank Iii Adorno | plans@adornoconstruction.com | (408) 369 8675 | GC, remodel, ADU | Campbell · Santa Clara County | — | — |
| Adria Design Build LLC | Kesovija Mladen | hello@adriadesignbuild.com | (408) 533 3772 | GC, remodel, ADU | Los Altos · Santa Clara County | — | — |
| Adrian Ceballos Landscaping Services | Ceballos Adrian | — | (408) 724 3139 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Adrian M Aldren | Adrian M Aldren | — | (408) 508 2345 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Adrian's General Services | Pando Adrian | — | (408) 781 4670 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Adu By Luxury Construction INC | Oren Sirota | — | (818) 300 3334 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Adu Palo Alto | James Michael Witt | kelly@adupaloalto.com | (650) 885 6915 | GC, remodel, ADU | Palo Alto · Santa Clara County | — | — |
| Adujustforu INC | Bogdan Ryczkowski | — | (650) 280 5892 | GC, remodel, ADU | San Martin · Santa Clara County | — | — |
| Advance Door Products | Justin David Parks | — | (408) 550 4626 | Other | San Jose · Santa Clara County | — | — |
| Advance G T C | Advance G T C | — | (408) 515 5990 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Advance Tech Construction INC | Shavalian Homayoun | — | (408) 314 3000 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Advanced Chemical Transport LLC | Joseph Michael Williams | — | (408) 548 5050 | Other | San Jose · Santa Clara County | — | — |
| Advanced Com | Gary Scott Gass | sales@advancedcom.com | (408) 930 6704 | Other | San Jose · Santa Clara County | — | — |
| Advanced Enterprise Electrical Co | Samkhaniani Ramezanali | — | (408) 426 1660 | Electricians | San Jose · Santa Clara County | — | — |
| Advanced Facility Operations INC | Romulo Dario Bellido | — | (408) 701 8857 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Advanced Facility Solutions | Richard Lee Schaper | — | (408) 298 4391 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |