| Bay Construction Services INC | Jose Diaz-Arrazola | — | (408) 449 0537 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Bay Cooling Solutions INC | Miguel Angel Mendiola-Nunez | — | (408) 520 8634 | HVAC | San Jose · Santa Clara County | — | — |
| Bay Electric LLC | Vahe Tagmazyan | bayview@bayelectric.com | (408) 401 9701 | Electricians | San Jose · Santa Clara County | — | — |
| Bay Elites Electrical INC | Vargas Roberto Lopez | vargas@bayeliteselectrical.com | (408) 667 4388 | Electricians | San Jose · Santa Clara County | — | — |
| Bay Floor Covering | Dmytro Boboshko | — | (408) 707 5786 | Other | San Jose · Santa Clara County | — | — |
| Bay Garden | Bay Garden | — | (408) 821 1845 | Windows, patio, painters | Morgan Hill · Santa Clara County | — | — |
| Bay Glass & Showers INC | Mir Hossain Hejazi | — | (408) 378 2526 | Windows, patio, painters | Campbell · Santa Clara County | — | — |
| Bay Greenery LLC | Nathan Kyle Shipnuck | ops@baygreenery.com | (408) 515 5349 | Windows, patio, painters | Cupertino · Santa Clara County | — | — |
| Bay Home Builders INC | Tom Haim Raz | — | (310) 666 4379 | GC, remodel, ADU | Sunnyvale · Santa Clara County | — | — |
| Bay Home Design And Construction | Jianping Wu | — | (408) 489 5848 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Bay Home Renovations | Tyrone Warwick Milner | — | (408) 513 4444 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Bay Image Landscaping | Jose Alberto Felix | — | (669) 294 1292 | Windows, patio, painters | Santa Clara · Santa Clara County | — | — |
| Bay Land Construction | Margoosian Robert | amkryukov@gmail.com | (650) 787 7144 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Bay Light Electric INC | Yourghanlouye-jizeh Rimo | — | (408) 234 1832 | Electricians | Gilroy · Santa Clara County | — | — |
| Bay Machine Solutions | Bay Machine Solutions | — | (408) 221 7465 | Electricians | San Jose · Santa Clara County | — | — |
| Bay Maples Wild California Gardens | Alan Michael Hackler | — | (408) 391 0647 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Bay Mountain Air INC | Todd Alan Stone | — | (408) 378 6375 | HVAC | Campbell · Santa Clara County | — | — |
| Bay One Electric INC | Shunren Peng | — | (408) 890 0131 | Electricians | San Jose · Santa Clara County | — | — |
| Bay One Plumbing | Bay One Plumbing | — | (408) 438 7810 | Other | Campbell · Santa Clara County | — | — |
| Bay Painting INC | Anthony Conrad Arteaga | — | (408) 726 1462 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Bay Power Electric INC | Julio C Jimenez | — | (408) 460 4758 | Electricians | San Jose · Santa Clara County | — | — |
| Bay Pro Plumbing INC | David | — | (669) 262 8312 | Other | San Jose · Santa Clara County | — | — |
| Bay Prospect Construction INC | Malcolm Timothy Clay | — | (408) 568 5267 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Bay Remodeling Kitchen & Bath INC | Avi | — | (669) 300 7166 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Bay Rooter & Plumbing | Rozina Cukic | — | (408) 941 1644 | Other | Milpitas · Santa Clara County | — | — |
| Bay Scenery | Ali Tehranchi | — | (408) 768 6449 | GC, remodel, ADU | Mountain View · Santa Clara County | — | — |
| Bay Specialty Construction | Dean Andrew Wolfe | — | (498) 460 3764 | GC, remodel, ADU | Gilroy · Santa Clara County | — | — |
| Bay Stone Builders | Maayan Katav | — | (669) 272 9362 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Bay Sun Electric | Hourmouz Vardeh Anhar | info@baysunelectric.com | (408) 335 8262 | Electricians | Sunnyvale · Santa Clara County | — | — |
| Bay Team Construction INC | Fernando Rodriguez | — | (408) 504 4848 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Bay Tek Coatings | Brandon Shea Cartwright | info@baytekcoatings.com | (901) 652 2726 | Windows, patio, painters | Milpitas · Santa Clara County | — | — |
| Bay Tek Coatings INC | Brandon Shea Cartwright | info@baytekcoatings.com | (901) 652 2726 | Windows, patio, painters | Milpitas · Santa Clara County | — | — |
| Bay Telecom INC | Tuan Van Ninh | — | (408) 382 9700 | Other | San Jose · Santa Clara County | — | — |
| Bay Top Builders Group INC | Baiwei Chen | — | (408) 307 3318 | Electricians | San Jose · Santa Clara County | — | — |
| Bay Valley Electric | Robert John Bailo | — | (650) 968 5405 | Electricians | San Jose · Santa Clara County | — | — |
| Bay View Homes INC | Jade Kwok Lum | — | (650) 207 6908 | GC, remodel, ADU | Los Altos · Santa Clara County | — | — |
| Bay Weatherization & Insulation | Bay Weatherization & Insulation | — | (408) 690 9898 | Other | San Jose · Santa Clara County | — | — |
| Bay Welders INC | George Alberto Rodriguez | — | (408) 369 9515 | Other | San Jose · Santa Clara County | — | — |
| Bayarea Balancing And Cleanrooms INC | Mark Anthony Avila | — | (408) 330 0900 | Other | San Jose · Santa Clara County | — | — |
| Baybuilders Of San Jose | Sam Siar | — | (655) 899 0192 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |