| Buildclear INC | Mark T Blackman | — | (855) 253 2537 | GC, remodel, ADU | Los Altos · Santa Clara County | — | — |
| Buildcom Construction | Khong Ngo Le | — | (408) 605 9382 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Builden Group INC | Ataei Ali | — | (408) 881 4155 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Builder Surplus Carpets INC | Joshua Lee Routon | — | (408) 288 7678 | Other | San Jose · Santa Clara County | — | — |
| Builder Up INC | Sterling Gary Kley | — | (650) 690 1924 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Builders Of The Bay INC | Zhao Shaolan | — | (408) 887 6234 | GC, remodel, ADU | Morgan Hill · Santa Clara County | — | — |
| Building & Beyond INC | Daniel Nicolas De Nike | — | (408) 761 5068 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Building Automation Solutions | Frederick James Murray | info@bas-tech.com | (408) 282 1180 | HVAC | Santa Clara · Santa Clara County | — | — |
| Building Contractors | Walter Wayne Coy | — | (408) 409 8535 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Building Dreams Custom Landscaping Corp | Jorge Arturo Marcelino Rivera | — | (408) 722 0830 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Building Legacies Construction | Carlos Eduardo Candelario Ortega | — | (408) 413 9387 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Building The Equestrian Dream | Building The Equestrian Dream | — | (408) 779 4844 | Other | Morgan Hill · Santa Clara County | — | — |
| Buildmeta Corporation | Hao Wang | — | (669) 699 8102 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Buildora | Liron Knot | info@buildora.com | (650) 484 7900 | GC, remodel, ADU | Sunnyvale · Santa Clara County | — | — |
| Buildsmith Construction | Jesse Pete Smith | buildsmithnw@gmail.com | (208) 841-5557 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Buildsphere INC | Gladys Cecilia Jimenez | — | (408) 910 4701 | GC, remodel, ADU | Sunnyvale · Santa Clara County | — | — |
| Buildsure Solutions INC | Gurjit Singh Dhillon | operations@buildsuresolutions.com | (540) 676 0755 | GC, remodel, ADU | Sunnyvale · Santa Clara County | — | — |
| Builtech Construction | Lee Don | — | (408) 605 8212 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Builtech Construction Group INC | Zhongqiang Liu | — | (510) 585 7388 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Builtex Contractor | Builtex Contractor | — | (408) 439 2226 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Buitron Painting INC | Juan Fernando Romero Buitron | — | (650) 346 8239 | Windows, patio, painters | East Palo Alto · Santa Clara County | — | — |
| Bukazoo INC | Michael Wayne Kenney | — | (408) 571 8380 | HVAC | San Jose · Santa Clara County | — | — |
| Bulldog Enterprises INC | David Allen Sloan | — | (408) 605 4875 | GC, remodel, ADU | Alviso · Santa Clara County | — | — |
| Bullrun Design And Build INC | Khanh Phi Nguyen | — | (408) 649 0688 | Electricians | Milpitas · Santa Clara County | — | — |
| Bulls Glass & Screen Center | Pour Mandana Imani | — | (408) 725 4070 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Bulls Legacy Builders INC | Samuel Alejandro Perez Mendoza | — | (408) 763 9359 | GC, remodel, ADU | San Martin · Santa Clara County | — | — |
| Burca Construction | Ionel Sorin Burca | — | (408) 843 3942 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Burdett Construction Co | Andrew James Burdett | — | (408) 464 6418 | GC, remodel, ADU | Gilroy · Santa Clara County | — | — |
| Burdick Painting | John Christopher Cintas | — | (408) 914 1426 | Windows, patio, painters | Santa Clara · Santa Clara County | — | — |
| Buringrud & Reyes Electric INC | Eric Brian Heed Buringrud | — | (707) 656 6831 | Electricians | Los Gatos · Santa Clara County | — | — |
| Burkhardt Electric | Stephen Charles Hajdu | — | (408) 482 6905 | Electricians | Morgan Hill · Santa Clara County | — | — |
| Burnham's Woodworking | Burnham's Woodworking | — | (408) 772 6773 | Other | San Jose · Santa Clara County | — | — |
| Burnham-construction INC | Danny Alan Burnham | — | (408) 600 9732 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Burr Plumbing And Pumping INC | Eric Michael Burr | — | (408) 287 2877 | Electricians | San Jose · Santa Clara County | — | — |
| Burriesci Construction | Robert Edward Burriesci | — | (408) 209 3520 | GC, remodel, ADU | Gilroy · Santa Clara County | — | — |
| Burris Builds | Burris Builds | — | (408) 646 8671 | GC, remodel, ADU | Gilroy · Santa Clara County | — | — |
| Burton Design & Construction LLC | Christine Marin Larsen | contact@sansoxygen.com | (408) 402 3282 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| Burton Design And Construction | Paul Brian Burton | contact@sansoxygen.com | (408) 497 0707 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| Butkovic Construction | Butkovic Adisa | — | (408) 836 4463 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Buzzy Bee Construction | Dario Diaz Villa | — | (408) 422 1655 | GC, remodel, ADU | Gilroy · Santa Clara County | — | — |