| Boothney & Sons Plumbing | Jesse Andrew Boothney | — | (949) 278 7332 | Other | Rancho Santa Margarita · Orange County | — | — |
| Borbon Incorporated | Paul Stephen Morales | — | (714) 994 0170 | Windows, patio, painters | Anaheim · Orange County | — | — |
| Borden Construction | Kenneth Wayne Borden | — | (949) 678 1336 | GC, remodel, ADU | Mission Viejo · Orange County | — | — |
| Border International Steel Co | Ronald Edward White | — | (714) 271 3290 | GC, remodel, ADU | Newport Beach · Orange County | — | — |
| Borgues General Construction | Onofre Pedro Borgues | — | (714) 955 2859 | GC, remodel, ADU | Mission Viejo · Orange County | — | — |
| Boris Custom Millwork INC | David Charles Boris | — | (949) 228 4069 | Other | Mission Viejo · Orange County | — | — |
| Borruel Construction INC | Jonathan Gustavo Borruel Fierro | — | (714) 460 3532 | GC, remodel, ADU | Orange · Orange County | — | — |
| Bosco Construction INC | Sergio Gabriel Borgognone | — | (949) 554 7295 | GC, remodel, ADU | Corona Del Mar · Orange County | — | — |
| Bose Custom Builds | Bose Custom Builds | bosecustombuilds@gmail.com | (949) 723 9965 | GC, remodel, ADU | Aliso Viejo · Orange County | — | — |
| Bossie Developers Inc. | Labi Norel | — | (310) 954 5496 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Bostrom Custom Building LLC | Mason Joseph Bostrom | — | (612) 223 2066 | GC, remodel, ADU | Mission Viejo · Orange County | — | — |
| Botros Construction INC | Samer F H Botros | — | (949) 632 7716 | GC, remodel, ADU | San Juan Capistrano · Orange County | — | — |
| Bottom Line Utility Solutions INC | Cory Franklin Smith | — | (800) 597 2835 | Electricians | Irvine · Orange County | — | — |
| Boudreaux's Glass And Mirror | Boudreaux's Glass And Mirror | — | (714) 630 7753 | Windows, patio, painters | Anaheim · Orange County | — | — |
| Boulderscape INC | Ryan William Allen | — | (949) 661 5087 | Other | San Clemente · Orange County | — | — |
| Bounce Back Surfacing | Torres Javier Lopez | — | (714) 643 3584 | Other | Tustin · Orange County | — | — |
| Bouquet Jason | Bouquet Jason | — | (949) 366 6564 | GC, remodel, ADU | Aliso Viejo · Orange County | — | — |
| Bourke Construction INC | Edmund James Bourke | — | (714) 488 8325 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| Bovee Roofing INC | Shawn Dale Bovee | — | (949) 661 8985 | Other roofers | Dana Point · Orange County | — | — |
| Bowman Pacific Const Co | Kalika Christopher Bowman | — | (949) 403 9909 | Electricians | Dana Point · Orange County | — | — |
| Boyd & Associates | Boyd & Associates | — | (949) 650-6560 | Alarm and generators | Costa Mesa · Orange County | — | — |
| Boyd Brothers Security INC | Tim Teff Boyd | — | (714) 742 2347 | GC, remodel, ADU | Aliso Viejo · Orange County | — | — |
| Boyd Construction INC | Martin Vincent Boyd | — | (949) 439 9034 | GC, remodel, ADU | Orange · Orange County | — | — |
| Boyds Shower Pans | Boyds Shower Pans | — | (949) 339 7371 | Other | Capistrano Beach · Orange County | — | — |
| Boyer Electrical Contractors | Chandon Starr Boyer | — | (949) 642 2431 | Electricians | Costa Mesa · Orange County | — | — |
| Boyes Construction INC | Brian Keith Boyes | — | (714) 968 1412 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Boztero LLC | Luciano Carlos Patitucci | — | (949) 430 0446 | Other | Orange · Orange County | — | — |
| Bp Electric | Byron Pacheco | — | (714) 278 5145 | Electricians | Huntington Beach · Orange County | — | — |
| Bp General Construction INC | Bryan Padilla | — | (714) 948 3368 | GC, remodel, ADU | Tustin · Orange County | — | — |
| Bp Vision | Bp Vision | — | (310) 218 6901 | Windows, patio, painters | Foothill Ranch · Orange County | — | — |
| Bph Builder | Bph Builder | — | (949) 467 4690 | GC, remodel, ADU | Newport Beach · Orange County | — | — |
| Bps Builder | Hoa Huu Le | — | (949) 229 3222 | GC, remodel, ADU | Garden Grove · Orange County | — | — |
| Bpw Heating And Cooling INC | Duane Michael Kressin | — | (714) 552 5637 | HVAC | Yorba Linda · Orange County | — | — |
| Braathen Construction | Braathen Arild | — | (949) 548 1200 | GC, remodel, ADU | Costa Mesa · Orange County | — | — |
| Brad Allred A R C Services | Bradley Allan Allred | — | (714) 580 6058 | GC, remodel, ADU | Placentia · Orange County | — | — |
| Brad Armstrong Tile And Stone | Brad Armstrong Tile And Stone | — | (714) 318 8409 | Other | Anaheim · Orange County | — | — |
| Brad Calcaterra Welding INC | Brad Myron Calcaterra | — | (949) 683 6411 | Other | Mission Viejo · Orange County | — | — |
| Brad Construction Management | Bradley Ryan Watson | — | (949) 835 5000 | GC, remodel, ADU | Newport Beach · Orange County | — | — |
| Brad Finney Construction | Bradley Jay Finney | — | (949) 422 3057 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| Brad Howard Installations | Brad Howard Installations | — | (714) 742 9958 | Other | Yorba Linda · Orange County | — | — |