| All Wood Floors | All Wood Floors | — | (408) 265 7168 | Other | San Jose · Santa Clara County | — | — |
| All-pro Heating & Cooling | Robert Jr Cordova | — | (408) 464 4927 | HVAC | Milpitas · Santa Clara County | — | — |
| Allan Salehi DBA Axiom Communications Systems | Axiom Communications Systems | — | (408) 872 2445 | Electricians | San Jose · Santa Clara County | — | — |
| Allana Buick & Bers INC | Gerson Samuel Bers | — | (650) 543 5600 | GC, remodel, ADU | Palo Alto · Santa Clara County | — | — |
| Allcons Builders INC | Ali Zaghi | — | (669) 300 9022 | GC, remodel, ADU | Cupertino · Santa Clara County | — | — |
| Allcons Group INC | Zaghi Ali | — | (669) 300 9022 | GC, remodel, ADU | Cupertino · Santa Clara County | — | — |
| Alldon Construction INC | Daniel Seung Ho Oh | — | (408) 892 7060 | HVAC | San Jose · Santa Clara County | — | — |
| Allegiant Electric INC | Kyle Alika Cook | — | (408) 505 9749 | Electricians | San Jose · Santa Clara County | — | — |
| Alleluia Plumbing | Alleluia Plumbing | — | (650) 241 8473 | Other | San Jose · Santa Clara County | — | — |
| Alliance Construction & Fire Protection | Tuan Huu Vu | — | (408) 621 1987 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Alliance Construction INC | Ryan Russell Coleman | info@allianceconstruction.com | (408) 374 2100 | GC, remodel, ADU | Campbell · Santa Clara County | — | — |
| Alliance Fence Company INC | Gonzalo Rendon-Banos | — | (408) 835 7910 | Other | San Jose · Santa Clara County | — | — |
| Alliance Flooring & Restoration | Alliance Flooring & Restoration | — | (408) 964 0215 | Restoration | San Jose · Santa Clara County | — | — |
| Alliance Green Builders | Alliance Green Builders | — | (760) 753-2440 | GC, remodel, ADU | Encinitas · Santa Clara County | — | — |
| Alliance Interlocking Pavers | Alliance Interlocking Pavers | — | (650) 333 1961 | Other | Mountain View · Santa Clara County | — | — |
| Alliance Manufactured Homes Installations INC | Steve Russell Ewbank | — | (408) 227 8200 | Other | San Jose · Santa Clara County | — | — |
| Alliance Roofing Company INC | Dana Braxton Miller | — | (408) 261 2595 | Other roofers | Santa Clara · Santa Clara County | — | — |
| Allied Construction Builders INC | Hee Yong Jeong | — | (408) 353 7069 | HVAC | San Jose · Santa Clara County | — | — |
| Allison Air Comfort Solutions | Allison Air Comfort Solutions | — | (408) 761 1763 | HVAC | San Jose · Santa Clara County | — | — |
| Allsite Corp Goods/services Construction | Timothy Waite Wheeler | — | (408) 280 1700 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Allsite Corporation Landscaping | Timothy Waite Wheeler | — | (408) 280 1700 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Allspark Electric | Franklin Randell Will Wilson | — | (408) 840 5423 | Electricians | San Jose · Santa Clara County | — | — |
| Allstar Plumbing Corporation | Sergio Perez Alvarez | — | (408) 282 7020 | Other | San Jose · Santa Clara County | — | — |
| Allstate Paving | Allstate Paving | — | (408) 218 7058 | Other | Gilroy · Santa Clara County | — | — |
| Alltrue Builders | Alltrue Builders | — | (408) 687 3373 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Allure Hardwood Flooring | Allure Hardwood Flooring | — | (408) 513 5052 | Other | San Jose · Santa Clara County | — | — |
| Ally Building Company | Daniel Hesus Montes | — | (408) 593 4051 | HVAC | San Jose · Santa Clara County | — | — |
| Alma Builders INC | Ted Junhee Chae | — | (650) 999 0241 | GC, remodel, ADU | Palo Alto · Santa Clara County | — | — |
| Almaden Asphalt Services | Robert Eric Vazquez | — | (408) 268 6217 | Other | San Jose · Santa Clara County | — | — |
| Almaden Kitchen | Haoxiang Hu | — | (408) 292 0290 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Almaden Stair And Rail INC | Steven Douglas Kittinger | — | (408) 997 2215 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Almaden Tile & Marble | Almaden Tile & Marble | — | (408) 497 7809 | Other | San Jose · Santa Clara County | — | — |
| Almaden Valley Alarm | Almaden Valley Alarm | — | (408) 219 2192 | Electricians | San Jose · Santa Clara County | — | — |
| Almaden Valley Backhoe INC | Robert Clyde Schade | — | (408) 921 2622 | Other | San Jose · Santa Clara County | — | — |
| Almaden Valley Landscape INC | Kenneth Patrick Riley | almadenlandscape@gmail.com | (844) 256 2336 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Almaden Valley Painting | Almaden Valley Painting | larry@almadenvalleypainting.com | (408) 398 4717 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Almaden Valley Plumbing INC | Michael Jack Brewer | support@almadenvalleyplumbing.com | (408) 268 6923 | Other | San Jose · Santa Clara County | — | — |
| Almaden Window & Door Construction INC | Ruben Arjon | — | (408) 835 0976 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Alonzo J Martinez Gen Cont | Alonzo J Martinez Gen Cont | — | (408) 838 5330 | GC, remodel, ADU | Campbell · Santa Clara County | — | — |
| Alosi Concrete INC | Albert Dumitru Alosi | — | (408) 778 3703 | Electricians | Morgan Hill · Santa Clara County | — | — |