| Asham Construction | Soroosh Shahryar | — | (408) 888 5446 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| Asher Home Builders INC | Adriana Vega | dzohar@d2zdesign.com | (408) 613 7848 | Other roofers | San Jose · Santa Clara County | — | — |
| Ashkanz INC | Ashkan Zargari | info@ashkanz.com | (408) 460 8463 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Ask Landscaping | Ask Landscaping | asklandscapinghelp@gmail.com | (408) 891-5776 | Windows, patio, painters | Gilroy · Santa Clara County | — | — |
| Asl Remodeling INC | Jim Irvine Taylor | — | (408) 753 0012 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| Aspect Construction Co | Tay Trung Le | — | (408) 835 7993 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Aspen Fire Alarm & Security INC | Jonathan Evans Goldman | — | (408) 738 8600 | Electricians | Sunnyvale · Santa Clara County | — | — |
| Assadi Home Construction And Design | Saeid Jack Assadi | — | (415) 375 2728 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Associated Plumbing INC | Timothy Richard Gorshe | — | (408) 847 4406 | GC, remodel, ADU | Gilroy · Santa Clara County | — | — |
| Associated Water Locating | Kenneth Lee Jr Romero | — | (831) 801 0082 | Other | Gilroy · Santa Clara County | — | — |
| Association Construction Services INC | Donald Joseph Sylvia | — | (408) 287 5050 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Assurance Low Voltage Security Corp | Michele Elizabeth Jimenez | — | (408) 991 5275 | Electricians | Sunnyvale · Santa Clara County | — | — |
| Assured Stone & Tile | Assured Stone & Tile | — | (831) 537 8626 | Other | Gilroy · Santa Clara County | — | — |
| Astral Electrical Contractor | Astral Electrical Contractor | admin@astralelectrical.com | (650) 562-8594 | Electricians | Santa Clara · Santa Clara County | — | — |
| Astro Heating INC | James Taylor Brown | — | (408) 515 7724 | HVAC | San Jose · Santa Clara County | — | — |
| Atanus | Bit Atanus Emelon Abel | — | (408) 398 7546 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Atex Remodeling Corp | Aldo Gabriel Lopez-Molina | — | (510) 978 7983 | GC, remodel, ADU | Palo Alto · Santa Clara County | — | — |
| Athena Green Design & Build INC | Chen Hou | — | (510) 736 9323 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Athena Maintenance And Construction LLC | Maria Shelija Guberman | — | (408) 559 5979 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Atherton General Construction INC | Benito Ruiz | — | (650) 208 6543 | GC, remodel, ADU | Sunnyvale · Santa Clara County | — | — |
| Atherton Landscaping INC | Stephen Calvert Atherton | — | (408) 639 9624 | Windows, patio, painters | Saratoga · Santa Clara County | — | — |
| Atilano Roofing INC | Michael Richard Warn | — | (510) 766 5065 | Other roofers | San Jose · Santa Clara County | — | — |
| Atkins Specialty Windows | Atkins Specialty Windows | — | (408) 876 3313 | Windows, patio, painters | Santa Clara · Santa Clara County | — | — |
| Atkinson Climatrollers INC DBA Valley Heating,cooling,electrical | Jeffrey Allen Faulkner | — | (408) 294 6290 | HVAC | San Jose · Santa Clara County | — | — |
| Atkinson Construction LLC | Michael Charles Atkinson | — | (408) 592 7890 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| Atlanta Construction INC | Francis Sung Ngor Ho | — | (408) 205 5520 | GC, remodel, ADU | Cupertino · Santa Clara County | — | — |
| Atlantic Concrete INC | Augustine Walter Melia | — | (408) 848 3222 | Other | Gilroy · Santa Clara County | — | — |
| Atlantic O J Plumbing INC | Pinal Octavio Gomez | — | (408) 802 9997 | Other | Gilroy · Santa Clara County | — | — |
| Atlantis Remodeling INC | Joseph Papias Mosquera | contact@atlantis-remodeling.com | (408) 212 0262 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Atlas Pools Of Gilroy | Paul Alexander Roach | — | (408) 842 3832 | Pool | Gilroy · Santa Clara County | — | — |
| Atm Construction | Anthony Theodore Maniscalco | — | (408) 899 6565 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Atocha Roofing | Pablo Antonio Chavarin | — | (408) 561 2745 | Other roofers | San Jose · Santa Clara County | — | — |
| Atom Construction INC | Jay Marshall Bryan | tom@atom-construction.com | (408) 438 5453 | GC, remodel, ADU | Palo Alto · Santa Clara County | — | — |
| Atrics INC | Robert Mohsen Taheri | info@atrics.com | (408) 252 5546 | HVAC | San Jose · Santa Clara County | — | — |
| Ats Mechanical | James Richard Lowder | — | (408) 926 2718 | HVAC | San Jose · Santa Clara County | — | — |
| Attic Bros | Levi Omri | — | (408) 990 6418 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Attic Crew | Ohad Baruch | — | (800) 558 5857 | HVAC | San Jose · Santa Clara County | — | — |
| Attic Pros Construction INC | Nguyen Eric | — | (408) 250 6055 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Attic Team INC | Alexander Anthony Montano | — | (510) 999 1875 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Atticali Ecoshield | Itzhak Biton | — | (408) 664 9888 | HVAC | Milpitas · Santa Clara County | — | — |