| Aqua Pulse Pool Service | Song Hyunsup | — | (408) 693 4803 | Pool | San Jose · Santa Clara County | — | — |
| Aqualine Piping INC | Chrystal Michelle Lara-steele | — | (408) 745 7100 | Other | San Jose · Santa Clara County | — | — |
| Aquamatic Cover Systems | Harry John Last | — | (800) 262 4044 | Other | Gilroy · Santa Clara County | — | — |
| Aquatek Plumbing INC | Derrick Anthony Simons | — | (408) 295 7767 | Other | San Jose · Santa Clara County | — | — |
| Aquatic Commercial Industries | Aquatic Commercial Industries | — | (408) 741 5871 | Pool | Saratoga · Santa Clara County | — | — |
| Aquatic Pool Restoration | Jason Clayton Wilber | — | (650) 714 0638 | Pool | Los Altos · Santa Clara County | — | — |
| Aquatic Pools South Bay | Kevin Leffler Brown | — | (408) 516 4154 | Pool | Morgan Hill · Santa Clara County | — | — |
| Aquatic Technology Pool & Spa | Donna Lynn Foster | — | (408) 776 8220 | GC, remodel, ADU | Morgan Hill · Santa Clara County | — | — |
| Aquetrim Gutters INC | Robert Dean Muonio | — | (408) 261 0464 | Other | Santa Clara · Santa Clara County | — | — |
| Aquinas HVAC INC | Daniel Thomas Lewis | — | (408) 200 6684 | HVAC | Santa Clara · Santa Clara County | — | — |
| Ar Electrical Service INC | Anar Amirov | — | (669) 319 9739 | Electricians | Cupertino · Santa Clara County | — | — |
| Ara Construction LLC | Suleiman D Araj | info@araconstruction.com | (415) 860 0040 | GC, remodel, ADU | Morgan Hill · Santa Clara County | — | — |
| Araaz Electric | Hameed Azari | — | (408) 661 3410 | Electricians | Los Gatos · Santa Clara County | — | — |
| Aranda Air Heating And Air Conditioning | Louis Jimenez Ii Aranda | — | (408) 271 8835 | HVAC | San Jose · Santa Clara County | — | — |
| Aravat Landscaping INC | Duarte Eduardo Reyes | office@aravatlandscaping.com | (408) 876 8952 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Arb Remodeling INC | Angel Ricardo Balcazar Rosales | — | (408) 375 9512 | GC, remodel, ADU | Milpitas · Santa Clara County | — | — |
| Arbor Beast | Arbor Beast | — | (831) 240 1672 | Tree | San Jose · Santa Clara County | — | — |
| Arborist View Tree Care | Arborist View Tree Care | — | (650) 380 2297 | Tree | East Palo Alto · Santa Clara County | — | — |
| Arborlift INC | Jose Juan Melendez | — | (650) 815 1639 | Other | Santa Clara · Santa Clara County | — | — |
| Arc Electrical Services | Arc Electrical Services | — | (408) 542-0435 | Electricians | Milpitas · Santa Clara County | — | — |
| Arc Painting & Remodeling | Santa Clara Painting | Arc Painting & Remodeling | Santa Clara Painting | arc.painting@yahoo.com | (408) 645-5678 | Windows, patio, painters | Santa Clara · Santa Clara County | — | — |
| Arcadia Construction | Abniz Behnam | — | (408) 888 1626 | Electricians | San Jose · Santa Clara County | — | — |
| Arcadia Development Co | Reinhard Eli | info@arcadia-development.com | (408) 961 8101 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Arceo Epoxy Concrete Coatings INC | Jose Gerardo Arceo | — | (408) 688 4329 | Other | Santa Clara · Santa Clara County | — | — |
| Arch General Construction INC | Ze Li | info@archgeneralconstruction.com | (510) 457 6668 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Archania Construction Company | Timothy North Bogner | info@archaniaconstruction.com | (650) 799 6917 | Electricians | Palo Alto · Santa Clara County | — | — |
| Archbold Painting Company | William Warren Archbold | — | (408) 838 5960 | Windows, patio, painters | Morgan Hill · Santa Clara County | — | — |
| Archkey Solutions | Matthew Kevin Lodes | — | (408) 298 3134 | Electricians | San Jose · Santa Clara County | — | — |
| Arclite INC | Raymond Villegas | — | (609) 932 7884 | Electricians | San Martin · Santa Clara County | — | — |
| Arctec | Anekava Teneia Tulua | — | (408) 426 1551 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Arctic Air | Arctic Air | — | (408) 600 9667 | HVAC | Milpitas · Santa Clara County | — | — |
| Arctic HVAC Repair | Sergey Leskin | — | (408) 300 3343 | HVAC | San Jose · Santa Clara County | — | — |
| Arcune Plumbing LLC | Randall Edward Arcune | arcplumb@yahoo.com | (650) 787 7061 | Other | Los Altos · Santa Clara County | — | — |
| Ardeco | Raivis Kampenuss | — | (669) 223 1622 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Ardeen M Mettee | Ardeen M Mettee | — | (408) 309 1973 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| Area Construction INC | Alan Carter | — | (650) 279 1139 | GC, remodel, ADU | Palo Alto · Santa Clara County | — | — |
| Area Custom Tree Service INC | Ronald Bruce Walker | — | (650) 969 7076 | Tree | Cupertino · Santa Clara County | — | — |
| Area General Construction | Area General Construction | — | (510) 917-9432 | GC, remodel, ADU | Alameda · Santa Clara County | — | — |
| Arena Construction INC | Joseph Louis Arena | — | (408) 309 9246 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Arena Painting | Arena Painting | — | (408) 489 8950 | Windows, patio, painters | Milpitas · Santa Clara County | — | — |