| Better Telecomm | Better Telecomm | — | (800) 824 2718 | Other | Huntington Beach · Orange County | — | — |
| Betterment Tree Health Care LLC | Hernan Jesualdo Gonzalez | — | (714) 905 6444 | Tree | Huntington Beach · Orange County | — | — |
| Beveldine INC | Cynthia Louise Chenier | — | (714) 761 1360 | Windows, patio, painters | Stanton · Orange County | — | — |
| Bevels Hardwood | Bevels Hardwood | — | (714) 970 9600 | Other | Yorba Linda · Orange County | — | — |
| Beyond Imagine | Beyond Imagine | — | (949) 436 0993 | GC, remodel, ADU | Ladera Ranch · Orange County | — | — |
| Beyond Prestige Roofing | William Enrique Zelaya | — | (714) 623 9412 | Other roofers | Anaheim · Orange County | — | — |
| Beyond Surface INC | Costin Mircea Rosca | — | (714) 369 5910 | Electricians | Huntington Beach · Orange County | — | — |
| Bezal Construction | Seyedalireza Fatemi | — | (949) 910 6618 | GC, remodel, ADU | Aliso Viejo · Orange County | — | — |
| Bezalel Construction And Design | Simon Andrew Young | — | (949) 212 9683 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| Bf Construction | Robert Arnold Fransen | — | (949) 244 5344 | GC, remodel, ADU | Capistrano Beach · Orange County | — | — |
| Bf Electric | Fang Zhao | — | (626) 733 4534 | Electricians | Yorba Linda · Orange County | — | — |
| Bfd Development | Beshoy Fikry Victor Dawod | — | (323) 892 9973 | GC, remodel, ADU | Mission Viejo · Orange County | — | — |
| Bfs Plumbing INC | Benito Salgadofuentes | — | (949) 521 3895 | Other | Lake Forest · Orange County | — | — |
| Bgc Electric | Brian Christopher Green | — | (714) 392 6964 | Electricians | Yorba Linda · Orange County | — | — |
| Bgm Electric | Robert Michael Wahlsteen | — | (714) 828 4328 | Electricians | Cypress · Orange County | — | — |
| Bia Associates | Keivan Shirali | — | (714) 582 8435 | GC, remodel, ADU | Orange · Orange County | — | — |
| Biagio's Air Conditioning / Heating | Biagio's Air Conditioning / Heating | — | (714) 350 6292 | HVAC | Huntington Beach · Orange County | — | — |
| Biard & Crockett Plumbing,heating And Air Conditioning INC | Paige Elizabeth Ballard | — | (714) 639 4400 | HVAC | Orange · Orange County | — | — |
| Bichai Construction Corporation | Anthony Bishoy Serap Bichai | — | (714) 883 7252 | GC, remodel, ADU | Buena Park · Orange County | — | — |
| Bid Balboa Electric | Gregory George Santana | — | (949) 903 4591 | Electricians | Newport Beach · Orange County | — | — |
| Bielski Services INC | Timothy Michael Bielski | — | (714) 630 2316 | Windows, patio, painters | Anaheim · Orange County | — | — |
| Bielski Specialty Services INC | Timothy Michael Bielski | — | (714) 631 2316 | Windows, patio, painters | Anaheim · Orange County | — | — |
| Bierman Backflow Service | Eric Raymond Bierman | — | (949) 548 2722 | Other | Newport Beach · Orange County | — | — |
| Big Ben INC | Maryam Sharifi | — | (949) 660 9400 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Big Bull Industries INC | Jeffrey Todd Ferron | — | (714) 981 0517 | Other | Placentia · Orange County | — | — |
| Big Electric Socal INC | Bryan Jeffrey Solt | — | (949) 880 9527 | Electricians | Mission Viejo · Orange County | — | — |
| Big Horn Construction | Jaimes Andrew | — | (714) 395 0639 | GC, remodel, ADU | Fullerton · Orange County | — | — |
| Big J Construction | John Ioan Prunean | — | (714) 277 7333 | GC, remodel, ADU | La Habra · Orange County | — | — |
| Big Mike Electric | Michael James O'connor | — | (714) 537 6664 | Electricians | Garden Grove · Orange County | — | — |
| Big Nate Construction INC | Le Anh Tu | — | (714) 492 9121 | GC, remodel, ADU | Garden Grove · Orange County | — | — |
| Big Neck Jeff Network | Big Neck Jeff Network | — | (949) 444 1202 | GC, remodel, ADU | Dana Point · Orange County | — | — |
| Big Red Industrial Construction Services | Justin David Evans | — | (714) 514 1309 | GC, remodel, ADU | Costa Mesa · Orange County | — | — |
| Big Rock Masonry | Guerrero Fernando Mota | — | (714) 720 3765 | Pool | Stanton · Orange County | — | — |
| Big Sky Design INC | Nicholas Charles Zamora | — | (714) 356 5202 | GC, remodel, ADU | Santa Ana · Orange County | — | — |
| Big Small Remodeling Construction | Jose Hugo Cristobal Cervantes | — | (951) 376 0808 | GC, remodel, ADU | Costa Mesa · Orange County | — | — |
| Big Tree Painting | Medina Orlando Segura | — | (949) 306 4312 | Windows, patio, painters | Anaheim · Orange County | — | — |
| Big Wave Construction Company | David Dale De Clark | — | (949) 922 0321 | GC, remodel, ADU | Costa Mesa · Orange County | — | — |
| Big Wave Heating And Air Conditioning LLC | Charles Edward Rutkowski | — | (949) 933 5315 | HVAC | Huntington Beach · Orange County | — | — |
| Bigger Hammer Builder | Bigger Hammer Builder | info@biggerhammerbuilder.com | (360) 270 2898 | GC, remodel, ADU | Newport Beach · Orange County | — | — |
| Bijan Tavakoli | Bijan Tavakoli | — | (562) 810 5051 | GC, remodel, ADU | Irvine · Orange County | — | — |