| Bodash Corporation | Robert Lynn Jr Stanley | — | (510) 657 8484 | HVAC | Fremont · Alameda County | — | — |
| Bodhi Tree Construction INC | Jeffrey Darin Gomes | — | (510) 573 3173 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Bohm Environmental Solutions | Patricia Alarcon Bohm | — | (510) 719 7600 | Other roofers | Oakland · Alameda County | — | — |
| Boim Construction Company | Gil Manuel Boim | — | (510) 714 7217 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Bold Restoration INC | Ramirez Gregorio | — | (510) 315 7056 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Bolls Fire And Safety INC | Jared Allen Bolls | — | (925) 548 5251 | Other | Livermore · Alameda County | — | — |
| Bonafide Plumbing Company | Edward Charles Asuncion | ed@bonafideplumbing.com | (510) 917 0119 | Other | Alameda · Alameda County | — | — |
| Bond Blacktop INC | Deborah Renee Dillon | — | (510) 783 9909 | Other | Union City · Alameda County | — | — |
| Bond Painting | Bond Painting | — | (925) 339 0514 | Windows, patio, painters | Livermore · Alameda County | — | — |
| Boneh Builders Corp | Abir Eyal | — | (510) 562 1111 | Electricians | Oakland · Alameda County | — | — |
| Bonifacio Construction | Alexander Manansala Bonifacio | — | (510) 305 6061 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Bonkowski & Associates INC | Michael Steven Bonkowski | — | (510) 450 0770 | Other | Berkeley · Alameda County | — | — |
| Bonnie L Carpenter | Bonnie L Carpenter | — | (510) 593 3041 | GC, remodel, ADU | Emeryville · Alameda County | — | — |
| Boone Construction | Brennon Sundance Boone | — | (970) 355 9124 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Borden Equipment INC | Jared Borden Mathews | — | (510) 789 0393 | Other | Newark · Alameda County | — | — |
| Borg Construction & Renovation INC | Mario Michael Borg | — | (650) 580 5027 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Born Property Management | Born Property Management | — | (650) 271-7048 | Property managers | Belmont · Alameda County | — | — |
| Borquez Demolition INC | Borquez Dolores | borquezdemolition@gmail.com | (510) 809 5105 | Other | Oakland · Alameda County | — | — |
| Bostok & Williams A Partnership | Linda Renay Luccketta-Williams | — | (510) 889 8479 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Boulder Electric | Jonathon Andrew Kurtz | chadgarrigues@gmail.com | (760) 792-8257 | Electricians | Castro Valley · Alameda County | — | — |
| Boulevard Garage Doors LLC | Joshua Obadiah Doughty | blvd.gd.office@gmail.com | (925) 272 7900 | Other | Dublin · Alameda County | — | — |
| Bountiful Botanicals INC | Lara Michelle Wilson | bountifulbotanicals@yahoo.com | (510) 316 5098 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Boyett Construction INC | John M Khau | info@boyettconstruction.com | (510) 264 9100 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Braco Plumbing Company | Trokic Ernad | bracoplumbing@yahoo.com | (510) 205 2573 | Other | Alameda · Alameda County | — | — |
| Brad Lord Solutions INC | Bradford Reed Lord | — | (510) 915 2630 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Brad Morisoli Construction | Bradley Philip Morisoli | — | (925) 766 0673 | Electricians | Livermore · Alameda County | — | — |
| Brad Solo | Brad Solo | — | (510) 547 0748 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Bradford Air & Heating | Bradford Air & Heating | — | (925) 455 4247 | HVAC | Livermore · Alameda County | — | — |
| Bradley Logan Construction | Bradley Wayne Logan | — | (925) 337 4800 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Bradshaw Roofing INC | Duran Moises Ruvalcaba | — | (408) 246 9930 | Other roofers | Livermore · Alameda County | — | — |
| Brainer Stone Expert Etc | Brainer Stone Expert Etc | — | (510) 228 2658 | Other | Oakland · Alameda County | — | — |
| Branagh INC | Thomas Norman Branagh | info@branagh.com | (510) 638 6455 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Brandon Choi Construction | Brandon Wilhon Choi | — | (510) 862 9339 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Branko's Painting | Branko's Painting | — | (510) 432 4301 | Windows, patio, painters | Hayward · Alameda County | — | — |
| Brasso's Plumbing INC | Bradley Scott Holsworth | — | (925) 454 8541 | Other | Livermore · Alameda County | — | — |
| Braswell Construction INC | Larry Edward Braswell | — | (925) 525 6169 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Bravas | Ted Jen-Bon Liu | — | (650) 455 2909 | Electricians | Dublin · Alameda County | — | — |
| Brayer Electric Company | Steven Peter Milne | estimating@brayerelectric.com | (510) 346 7012 | Electricians | San Leandro · Alameda County | — | — |
| Breathable | Biderman Nir | hello@breathable.com | (415) 696 7693 | HVAC | Oakland · Alameda County | — | — |
| Brekke Brothers Construction | Kristofer Jude Brekke | — | (510) 547 2313 | GC, remodel, ADU | Oakland · Alameda County | — | — |