| Areyes Construction INC | Reyes Alejandro Renteria | — | (408) 207 8957 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Argo Construction | Szantai Csilla | — | (650) 861 2274 | GC, remodel, ADU | Mountain View · Santa Clara County | — | — |
| Argon Construction INC | Christine Marie Sullivan | — | (408) 778 6835 | GC, remodel, ADU | Morgan Hill · Santa Clara County | — | — |
| Argonaut Glass & Mirror INC | Renee Leslie Erkson | — | (408) 777 8194 | Windows, patio, painters | Saratoga · Santa Clara County | — | — |
| Argonaut Window & Door INC | Martin Cornelius Ettema | — | (408) 376 4018 | Windows, patio, painters | Campbell · Santa Clara County | — | — |
| Arguelles Concrete | Arguelles Concrete | info@arguellesconcrete.com | (669) 292 3836 | Other | Morgan Hill · Santa Clara County | — | — |
| Aria Build & Construction INC | Amir Moeini | ariabuildersconstruction@gmail.com | (408) 816 7734 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Aria Construction | Aria Shahram | — | (408) 834 2017 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Aria Custom Home Builders INC | Baghdasarian Ilsin | — | (408) 634 5746 | GC, remodel, ADU | Morgan Hill · Santa Clara County | — | — |
| Aria Interior Finishes INC | Roni Hasson | sales@ariainteriorfinishes.com | (650) 556-3361 | Other | San Jose · Santa Clara County | — | — |
| Arian INC | Arslan Mehdi | — | (408) 772 9512 | Electricians | Cupertino · Santa Clara County | — | — |
| Ariel Painting INC | Ariel Cuauhtemoc Castellon Valencia | — | (408) 386 9791 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Arioto Plumbing | David Richard Arioto | — | (408) 314 3801 | Other | Gilroy · Santa Clara County | — | — |
| Arjan Painting | Arjan Painting | — | (408) 613 8005 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Ark Construction & Development LLC | Yang Andrew | — | (408) 335 9621 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| Arkadiy Svist | Arkadiy Svist | — | (650) 575 9801 | Electricians | Mountain View · Santa Clara County | — | — |
| Arkay Construction Energy Solutions | Raffie Ashot Karabed | — | (408) 218 7956 | HVAC | Campbell · Santa Clara County | — | — |
| Arkspace Design Build LLC | Brennon Sundance Boone | — | (650) 246 9980 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Arlo's Painting LLC | Diana C Arreola | — | (408) 394 2800 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Arm Welding INC | Rajko Bukarica | — | (408) 829 3451 | Other | Saratoga · Santa Clara County | — | — |
| Armando Castro | Armando Castro | — | (408) 394 6649 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Armando Deanda | Armando Deanda | — | (510) 557 0979 | Other | Santa Clara · Santa Clara County | — | — |
| Armando Lopez Construction | Villegas Armando Lopez | — | (408) 888 3765 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Armando's Construction | Juan Armando Huato-rodales | — | (408) 472 7935 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Armenta's Painting | Armenta's Painting | — | (408) 674 8747 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Armin's Communications | Armin's Communications | — | (669) 251 8670 | Other | Campbell · Santa Clara County | — | — |
| Armor Resurfacing | James Leon Sisco | — | (408) 578 5337 | Other | San Jose · Santa Clara County | — | — |
| Arne Sign & Decal Company | Steven Lee Foster | — | (408) 249 3838 | Other | Santa Clara · Santa Clara County | — | — |
| Arnold's Hauling & Recycling | Arnold's Hauling & Recycling | — | (408) 667 5170 | Other | San Jose · Santa Clara County | — | — |
| Aro Homes | Robert Derrick Morris | info@arohomes.com | (650) 265 2939 | GC, remodel, ADU | Mountain View · Santa Clara County | — | — |
| Around The Clock Garage Door | Mordechay Mark Amar | — | (850) 489 6631 | Other | San Jose · Santa Clara County | — | — |
| Around The Clock Garage Doors INC | Gidi Kaplun | — | (818) 620 4344 | Other | Sunnyvale · Santa Clara County | — | — |
| Arreola Pools INC | Juan Arreola | — | (408) 307 8949 | Pool | San Jose · Santa Clara County | — | — |
| Arreola's Flooring Installation | Arreola's Flooring Installation | sergio@arreolasflooringinstallation.com | (650) 460 0055 | Other | East Palo Alto · Santa Clara County | — | — |
| Arrgo Builders INC | Paul William Nuytten | — | (408) 549 1300 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Arriaga's Floors INC | Daniel Arriaga Zamora | — | (408) 833 5960 | Other | Sunnyvale · Santa Clara County | — | — |
| Arrigoni Electric | Steven Martin Arrigoni | — | (408) 348 0400 | Electricians | Los Gatos · Santa Clara County | — | — |
| Arrollo Electrical | Arrollo Nabor | — | (650) 823 8620 | Electricians | Mountain View · Santa Clara County | — | — |
| Arrow Asphalt | Bret Daniel Erickson | — | (408) 210 3491 | Other | Gilroy · Santa Clara County | — | — |
| Arrow Construction | Asghar Laique | info@arrow-construction.com | (408) 496 0305 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |