| Bear Mechanical INC | Edwing Erasmo Antuna Armendariz | micah@micahrich.com | (510) 461 4120 | HVAC | San Leandro · Alameda County | — | — |
| Bear Refrigeration | Micheal Bradley Cuningham | — | (925) 351 5469 | HVAC | Pleasanton · Alameda County | — | — |
| Bear Tree Company | Ivan Edgar Rojas | — | (510) 674 4246 | Other | Fremont · Alameda County | — | — |
| Bear Wire Electric LLC | Brandon Ernesto Salazar | — | (209) 355 6338 | Electricians | Berkeley · Alameda County | — | — |
| Beatson Electric Company | John Joseph Beatson | — | (510) 489 9436 | Electricians | Union City · Alameda County | — | — |
| Beautiful Gardens Maintenance | Beautiful Gardens Maintenance | — | (408) 591 5578 | Windows, patio, painters | Fremont · Alameda County | — | — |
| Beautiful Properties Renovations LLC | Henry Russell | — | (510) 220 4565 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Bebe Construction | Den Van Nguyen | — | (510) 517 7474 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Bebe Construction Company | Topirlan Ene | — | (510) 566 6685 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Beci Electric INC | Rex Gerald Waggener | chad@becielectric.com | (510) 635 1477 | Electricians | Oakland · Alameda County | — | — |
| Beck Roofing Company INC | Mary Lu Beck | — | (510) 581 6750 | Other roofers | Hayward · Alameda County | — | — |
| Becker Construction INC | Keith H Becker | — | (510) 673 7537 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Becky's Interiors | Rebecca Marie Rodamer | — | (510) 326 9286 | Other | Fremont · Alameda County | — | — |
| Bei Construction INC | David Michael Rantz | info@beiconstruction.com | (510) 521 3792 | Electricians | Alameda · Alameda County | — | — |
| Beilman Construction | Larry Paul Beilman | — | (510) 697 0540 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Belaire Enterprises INC | Joseph Thomas Jr Kessler | — | (510) 538 6950 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Belanger General Contracting INC | John Thomas Belanger | — | (510) 772 2174 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Beliveau Engineering Contractors INC | Lawrence Edmund Beliveau | — | (510) 595 1905 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Bella Electric | Hernandez Morales Luis | — | (209) 752 5308 | Electricians | Hayward · Alameda County | — | — |
| Bella Vista Construction | Brian Toya Hunt | — | (916) 807 8586 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Belmonte's Concrete Services INC | Ricardo Luis Belmonte | — | (510) 261 8439 | Other | Hayward · Alameda County | — | — |
| Beltran Painting Services Co INC | Danny Beltran | — | (510) 633 1488 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Beltran Tile Design | Beltran Tile Design | — | (510) 467 3464 | Other | Oakland · Alameda County | — | — |
| Ben Hardy & Company | Benjamin Francis Hardy | — | (415) 269 4843 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Ben Jacobs Plumbing INC | Yakir Mordehay Ben-Jakov | — | (415) 420 2852 | Other | Oakland · Alameda County | — | — |
| Ben's Roofing INC | Gustavo Briones Guerrero | — | (510) 690 8570 | Other roofers | Oakland · Alameda County | — | — |
| Ben-pac Construction INC | Andy Adil Akay | — | (925) 848 7869 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Benattar Marble & Granite INC | Benattar Moshe | — | (415) 821 1500 | Other | Albany · Alameda County | — | — |
| Benitez Builder | Benitez Builder | — | (925) 351 4899 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Benjamin Barnhart Electrical | Benjamin William Barnhart | — | (480) 388 0582 | Electricians | Oakland · Alameda County | — | — |
| Benjamin Builder | Benjamin Builder | benjaminbuilder18@gmail.com | (510) 501 4283 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Benjamin Mc Neil | Benjamin Mc Neil | — | (510) 846 7941 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Benlo Remodeling | Jesse Lee Reed | — | (341) 999 1821 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Bennett Graphic Signs INC | Bryan John Panian | tim@tbennettservices.com | (925) 931 1204 | Other | Pleasanton · Alameda County | — | — |
| Benny Wu | Benny Wu | — | (510) 853 5093 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Berggren Construction | John Edward Jr Berggren | — | (510) 418 7362 | GC, remodel, ADU | San Lorenzo · Alameda County | — | — |
| Berkeley Building Company INC | Peter William Sontag | — | (510) 984 0571 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Berkeley Cement INC | Anthony James Fadelli | — | (510) 525 8175 | Other | Berkeley · Alameda County | — | — |
| Berkeley Chimneys | Berkeley Chimneys | — | (510) 333 8486 | Other | Berkeley · Alameda County | — | — |
| Berkeley Craftsmen General Contractors Inc. | Michael Theodore Butler | — | (510) 549 3076 | GC, remodel, ADU | Berkeley · Alameda County | — | — |