| Azteca Carpentry | Juan Carlos Avendano | — | (805) 479 3567 | Other | Oxnard · Ventura County | — | — |
| Azure Kai Pools INC | John Edward Crystal | — | (310) 261 9050 | Pool | Ventura · Ventura County | — | — |
| Azure Painting | Azure Painting | — | (805) 210 0512 | Windows, patio, painters | Ojai · Ventura County | — | — |
| B & C Refrigeration | Anne Marie Barragan | — | (805) 290 9719 | HVAC | Fillmore · Ventura County | — | — |
| B & K Services INC | Brian Stanley Kenny | — | (805) 857 3284 | Electricians | Simi Valley · Ventura County | — | — |
| B & L Black INC | Brian Laurence Black | — | (805) 493 1920 | Pool | Newbury Park · Ventura County | — | — |
| B & L Plumbing | B & L Plumbing | — | (805) 658 0897 | Other | Ventura · Ventura County | — | — |
| B & M Contractors INC | Randall Bouha Bilsland | — | (805) 581 5480 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| B & R Fabrication | Patricia Ann Defisher | — | (805) 477 0338 | Other | Ventura · Ventura County | — | — |
| B C Rincon Construction INC | Glen Ray Carmichael | — | (805) 981 0690 | Other | Somis · Ventura County | — | — |
| B C Tree Service | Brett Lawrence Cunningham | dhw1981walk@gmail.com | (805) 649 6875 | Windows, patio, painters | Ventura · Ventura County | — | — |
| B D Land Investment And Development Co | Burt C Dalton | — | (818) 438 5161 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| B D Quality Roofing Corporation | Brayan Fernando Diaz Cante | qualityroofing805@gmail.com | (805) 885-7058 | Other roofers | Thousand Oaks · Ventura County | — | — |
| B Dodd | B Dodd | — | (818) 341 9432 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| B E Construction | William Bradford Evans | — | (805) 889 0903 | Electricians | Camarillo · Ventura County | — | — |
| B G Solutions INC | Richard Marquez | — | (805) 487 9710 | GC, remodel, ADU | Port Hueneme · Ventura County | — | — |
| B H C | B H C | — | (818) 652 7636 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| B M D Construction | James Timothy Dreyfus | bgavura@bmdconstruction.com | (805) 523 0484 | Other | Moorpark · Ventura County | — | — |
| B N K Designs | Becki Lynn Wood | — | (805) 660 2325 | Other | Thousand Oaks · Ventura County | — | — |
| B P R INC | Bryan Patrick Jr Rifley | — | (805) 290 5548 | Other | Port Hueneme · Ventura County | — | — |
| B R Sheldon Concrete | B R Sheldon Concrete | buzzsheldon1954@gmail.com | (818) 355 7356 | Other | Simi Valley · Ventura County | — | — |
| B S N Construction INC | Nakaba Benjamin | — | (805) 676 1864 | Other | Ventura · Ventura County | — | — |
| B S R Electric INC | Thomas John Barker | — | (818) 889 0644 | Electricians | Thousand Oaks · Ventura County | — | — |
| B W Glass & Mirror | Vincent Castellana | — | (805) 376 9383 | Windows, patio, painters | Newbury Park · Ventura County | — | — |
| B&d Landscaping INC | Gonzalo Moyado-Nieves | — | (661) 435 5724 | Windows, patio, painters | Oak View · Ventura County | — | — |
| Baba Enterprises | Kirpal Singh Dhaliwal | — | (928) 323 2782 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Babineau Construction | Kevin Roger Babineau | babineauconinc@me.com | (310) 457 3222 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Babineau Construction INC | Kevin Roger Babineau | babineauconinc@me.com | (310) 456 6342 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Badagger Builders | Diego Morales Garcia | — | (805) 647 0349 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Badalyan Group INC | Hayk Badalyan | — | (818) 216 8686 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Baker Construction & Technologies | Joshua David Baker | — | (818) 337 9807 | Electricians | Simi Valley · Ventura County | — | — |
| Bakersfield Pool Doctor | Bakersfield Pool Doctor | sinsith@aol.com | (661) 900 6061 | Pool | Ventura · Ventura County | — | — |
| Baldwin Cabinet | Baldwin Cabinet | — | (805) 905 7261 | Other | Simi Valley · Ventura County | — | — |
| Ballard Electric | James Donald Ballard | info@ballardelectric.com | (805) 328 2729 | Electricians | Simi Valley · Ventura County | — | — |
| Bancroft Construction INC | Russell Norbert Bancroft | — | (818) 869 6363 | Other roofers | Simi Valley · Ventura County | — | — |
| Banderas Plastering | Ricardo Antonio Banderas | — | (805) 509 8812 | Other | Oxnard · Ventura County | — | — |
| Barani Construction INC | Barani Mohammad | — | (310) 902 5248 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Barba's Custom Glazing INC | Eduardo Barba | — | (805) 363 6884 | Windows, patio, painters | Thousand Oaks · Ventura County | — | — |
| Barbara A Kennedy | Barbara A Kennedy | — | (805) 340 1883 | GC, remodel, ADU | Oak View · Ventura County | — | — |
| Barber Construction Co | Stephen Alfred Barber | — | (818) 679 6913 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |