| American Leak Detection | Gary Campbell Crossan | — | (818) 765 7080 | Other | Ventura · Ventura County | — | — |
| American Masonry | American Masonry | joealmeida01@hotmail.com | (805) 581 3424 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| American Nrg Electric INC | Kyle James Phillippe | — | (805) 861 9375 | Electricians | Ventura · Ventura County | — | — |
| American Nrg Framing INC | Manuel Anthony Jimenez | — | (805) 515 6969 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| American Shores Construction | Adolfo De Jesus Herrera Vasquez | — | (805) 200 1172 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| American Vision | Christopher Stephen Perez | — | (805) 582 1833 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| American Vision Cabinets INC | Akram Ragaei Armanyous | info@americanvisioncabinets.com | (805) 298 4411 | Other | Camarillo · Ventura County | — | — |
| American Window Concepts INC | Sean Christopher Yahn | sales@americanwindowconcepts.com | (562) 512-1200 | Windows, patio, painters | Ventura · Ventura County | — | — |
| American Wrap Co LLC | Tyler Scott Ohara | — | (661) 878 5587 | Other | Newbury Park · Ventura County | — | — |
| Americas Best Coatings INC | Michael Alan Green | — | (805) 223 9221 | Windows, patio, painters | Ventura · Ventura County | — | — |
| Ameron Pole Products LLC | Willibaldo Moreno-Olivares | — | (805) 524 0223 | Electricians | Fillmore · Ventura County | — | — |
| Ames Construction | Jeffrey Ray Ames | — | (805) 231 7529 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Amigos Lock & Safe | Amigos Lock & Safe | — | (805) 485 5466 | Other | Oxnard · Ventura County | — | — |
| Amin Asfour | Amin Asfour | — | (818) 903 3894 | Other | Simi Valley · Ventura County | — | — |
| Amodio J Electric Company | Amodio Joseph | — | (805) 404 9694 | Electricians | Simi Valley · Ventura County | — | — |
| Amped Electrical Company | Shawn Stewart Mcdougall | interested@domainmarket.com | (805) 792 5948 | Electricians | Newbury Park · Ventura County | — | — |
| Anacapa Construction | Jason Calvin Mathers | — | (805) 603 8929 | Electricians | Camarillo · Ventura County | — | — |
| Anacapa Drywall Construction INC | Robert John Torres | — | (805) 290 2718 | Other | Oxnard · Ventura County | — | — |
| Anacapa Heating & Air INC | Kevin Lee Kingsbury | anacapaac@msn.com | (805) 485 6333 | HVAC | Oxnard · Ventura County | — | — |
| Anacapa Management Group INC | Erik Lennart Johnson | — | (805) 796 6392 | Electricians | Simi Valley · Ventura County | — | — |
| Anacapa Pools | Anacapa Pools | — | (805) 651-0337 | Pool | Ventura · Ventura County | — | — |
| Anacapa Woodworks | Jesus Madrigal Espinoza | — | (805) 302 6214 | Other | Oxnard · Ventura County | — | — |
| Anacott Steel Reinforcement | Michael Scott Campbell | — | (805) 990 7577 | Other | Moorpark · Ventura County | — | — |
| Anchor Concrete Cutting | Anchor Concrete Cutting | — | (805) 649 3208 | Other | Oak View · Ventura County | — | — |
| Anchor Custom Glassworks INC | Steven Glenn Bostock | info@anchorcustomglassworks.com | (805) 648 2040 | Windows, patio, painters | Ventura · Ventura County | — | — |
| Andersen's Epic Contracting INC | Joshua Michael Andersen | — | (805) 204 1875 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Anderson & Sons Pools INC | Sandra Louise Anderson | — | (805) 492 3783 | Pool | Simi Valley · Ventura County | — | — |
| Anderson Construction | Lawrence Robert Anderson | — | (805) 910 8300 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Anderson Pool Service | Glenn James Anderson | — | (805) 497 2314 | Pool | Newbury Park · Ventura County | — | — |
| Anderson Refrigeration INC | Ricardo Mendez Valdez | — | (805) 984 1329 | HVAC | Port Hueneme · Ventura County | — | — |
| Andl Construction | Peter John Andl | — | (818) 626 7197 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Andrade Flooring | Andrade Flooring | — | (805) 206 7828 | Other | Fillmore · Ventura County | — | — |
| Andrade Iron Works INC | Cortes Raul Andrade | — | (805) 890 3050 | Other | Oxnard · Ventura County | — | — |
| Andreh's Construction INC | Hayrapetian Andereh | andrehsconstruction@yahoo.com | (310) 998 7676 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Andres Almanza Painting | Andres Almanza Painting | — | (805) 331 3886 | Windows, patio, painters | Ventura · Ventura County | — | — |
| Andres De Jesus Ibarra Flores | Andres De Jesus Ibarra Flores | — | (805) 366 1606 | Other | Oxnard · Ventura County | — | — |
| Andrew Jenkins Construction | Andrew Timothy Jenkins | — | (805) 432 5726 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Andrew Ray Kelley | Andrew Ray Kelley | — | (805) 340 5057 | Other | Ventura · Ventura County | — | — |
| Andrew Stasse | Andrew Stasse | — | (805) 640 9956 | GC, remodel, ADU | Ojai · Ventura County | — | — |
| Andrews Fine Cabinets And Millwork | Raymond Dale Andrews | — | (805) 651 9890 | Other | Ventura · Ventura County | — | — |