| Bn Plumbing Services INC | Babak Nazifi | — | (310) 871 8287 | Other | Irvine · Orange County | — | — |
| Bnd2 Construction | Brian Edward Wilson | — | (949) 633 8709 | GC, remodel, ADU | Foothill Ranch · Orange County | — | — |
| Bnf Construction INC | Fernando Jr Espino | — | (714) 408 5416 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| Bni Fireprotection INC | Dongsoo Han | — | (714) 390 1559 | Electricians | Placentia · Orange County | — | — |
| Bo - D - Bro INC | Robert Raymond Crane | — | (714) 898 3667 | GC, remodel, ADU | Fountain Valley · Orange County | — | — |
| Bo Geng | Bo Geng | — | (949) 572 8589 | GC, remodel, ADU | Trabuco Canyon · Orange County | — | — |
| Board Grip INC | Mohamed Iqbal Somji | — | (714) 883 1900 | GC, remodel, ADU | Brea · Orange County | — | — |
| Boardman Construction LLC | Richard Edward Boardman | lee@boardman-construction.com | (562) 322 1474 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Boardwalk Heating And Air INC | Angius Peter | — | (562) 841 7089 | HVAC | Mission Viejo · Orange County | — | — |
| Bob Electric INC | Robert Joseph Retmier | — | (949) 650 3337 | Electricians | San Juan Capistrano · Orange County | — | — |
| Bob Ell's Plumbing | Bob Ell's Plumbing | — | (714) 398 0210 | Other | Huntington Beach · Orange County | — | — |
| Bob Hilton Painting & Construction INC | Robert Myron Hilton | — | (562) 577 1949 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Bobby Plumbing | Bobby Plumbing | — | (949) 292 2532 | Other | Laguna Niguel · Orange County | — | — |
| Bode's Sign Services | Zephen Rodney Bode | — | (714) 283 0639 | Other | Anaheim · Orange County | — | — |
| Bodhi Elite INC | Canhdinhtony Phuoc Nguyen | — | (714) 467 8542 | GC, remodel, ADU | Orange · Orange County | — | — |
| Bodie's Glass Service | Samuel Bryce Bodenbender | — | (714) 898 4602 | Windows, patio, painters | Westminster · Orange County | — | — |
| Bodine Stone And Tile Installation | Bodine Stone And Tile Installation | — | (714) 856 1359 | Other | Fountain Valley · Orange County | — | — |
| Bogali Construction INC | Tivadar Bogdan | — | (714) 414 6874 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| Bogart Construction INC | Brad Kent Bogart | — | (949) 453 1400 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Bohr Construction | Ryan Christopher Bohr | — | (562) 393 1248 | Electricians | La Habra · Orange County | — | — |
| Boiler Dynamics INC | Imran T Husain | — | (714) 879 6029 | HVAC | Anaheim · Orange County | — | — |
| Bojana Vujosevic | Bojana Vujosevic | — | (323) 304 6498 | GC, remodel, ADU | Newport Coast · Orange County | — | — |
| Bok Construction | Sang Jun Cho | — | (213) 500 4100 | GC, remodel, ADU | Fullerton · Orange County | — | — |
| Bolanis Construction DBA Divine Design Construction | Vicki Pat Bolanis | — | (949) 510 6606 | GC, remodel, ADU | Mission Viejo · Orange County | — | — |
| Bologa Construction | Leonard Paul Bologa | — | (562) 544 0263 | GC, remodel, ADU | La Habra · Orange County | — | — |
| Bolsa Chica Building | Bolsa Chica Building | — | (714) 679 5761 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Bolsa Construction INC | Tu A Winn Nguyen | — | (813) 362 6328 | GC, remodel, ADU | Westminster · Orange County | — | — |
| Bolt Action G C Incorporated | James Edward Peres | — | (323) 395 9967 | GC, remodel, ADU | Costa Mesa · Orange County | — | — |
| Bolt Electric | Patrick Garrett Mc Dowell | — | (714) 814 0933 | Electricians | Fullerton · Orange County | — | — |
| Bomel Construction Co INC | Lisa Lynn Mc Ginnis | — | (714) 921 1660 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Bonanza Roofing | Josue Eduardo Gonzalez | — | (562) 688 9112 | Other roofers | La Habra · Orange County | — | — |
| Bonanza Steam Cleaning INC | Ronald Wesley Wayland | — | (949) 933 2744 | Windows, patio, painters | San Juan Capistrano · Orange County | — | — |
| Bond Construction INC | Samuel Hunter Easterday | — | (714) 313 4018 | GC, remodel, ADU | Yorba Linda · Orange County | — | — |
| Bonilla Roofing | Francisco Martinez Bonilla | — | (714) 748 4259 | Other roofers | Garden Grove · Orange County | — | — |
| Bonilla's Plumbing Service Usa Corp | Gonzalez Lucio Bonilla | — | (714) 341 6801 | Other | Anaheim · Orange County | — | — |
| Bonin Construction | Ben Edwin Bonin | — | (949) 364 1207 | GC, remodel, ADU | Laguna Niguel · Orange County | — | — |
| Booil Kim | Booil Kim | — | (213) 807 5300 | GC, remodel, ADU | Fullerton · Orange County | — | — |
| Boone Action Turf | Matthew Joseph Boone | — | (888) 528 8873 | Other | Santa Ana · Orange County | — | — |
| Boostrom Construction INC | Joshua Peter Boostrom | joshua@boostromconstruction.com | (949) 500 1851 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Booth Electric | Chad Dalton Booth | — | (714) 803 1153 | Electricians | San Clemente · Orange County | — | — |