| A1 Flooring | Foumani Maskan Mahchid Ansary | — | (818) 668 7419 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| A1 Pool Solutions | Steven Robert Levine | — | (805) 775 7438 | Pool | Port Hueneme · Ventura County | — | — |
| A2z Pools | A2z Pools | zach@a2zswim.com | (805) 297 0684 | Pool | Simi Valley · Ventura County | — | — |
| Aa California Roofing | Aa California Roofing | — | (877) 367-6304 | Other roofers | Woodland Hills · Ventura County | — | — |
| Aa Garage Doors | Aa Garage Doors | — | (805) 981 7999 | Other | Oxnard · Ventura County | — | — |
| Aa Painting | Aa Painting | interested@domainmarket.com | (805) 890 2672 | Windows, patio, painters | Ojai · Ventura County | — | — |
| Aaa Interiors | Aaa Interiors | info@aaainteriors.com | (805) 487 7709 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Aaa Services | Frank Lloyd Younce | — | (805) 746 1525 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Aaron Electric | Mitchell Aaron Urgenson | — | (661) 305 0552 | Electricians | Ventura · Ventura County | — | — |
| Aaron Kelly Electric Lighting Design LLC | Aaron Paul Kelly | — | (805) 320 5357 | Electricians | Oak View · Ventura County | — | — |
| Aaron L Holloway Construction | Aaron Larson Holloway | — | (805) 701 6908 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Aaron's Pool Service And Construction Incorporated DBA Aaron's | Aaron Michael Nygaard | — | (805) 207 5998 | Pool | Simi Valley · Ventura County | — | — |
| Ab Electric | Haji Agha Bozorgi Ali | — | (805) 470 0148 | Electricians | Ventura · Ventura County | — | — |
| Abba And Sons Construction Co | Mary Baez Garcia | — | (909) 614 3380 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Abee Construction | Robert Lee Jr Abee | — | (805) 340 6829 | GC, remodel, ADU | Santa Paula · Ventura County | — | — |
| Abel Garcia | Abel Garcia | — | (805) 217 6137 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| Abeloe Masonry | Donald Leland Ii Abeloe | — | (805) 377 7439 | Other | Ventura · Ventura County | — | — |
| Abinadi J Rabago | Abinadi J Rabago | — | (805) 921 5624 | Other | Santa Paula · Ventura County | — | — |
| Able Construction & Electric INC | Robert Jeffery Geiger | — | (805) 797 4303 | Electricians | Somis · Ventura County | — | — |
| Ableman Plumbing & Rooter Services | Alvarez Jonathan | — | (805) 290 5060 | Other | Ventura · Ventura County | — | — |
| Abm Air Conditioning And Heating | Abm Air Conditioning And Heating | — | (805) 813 5439 | HVAC | Simi Valley · Ventura County | — | — |
| Abm Construction | Jorge Armando Vega Velasquez | — | (805) 813 5439 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Above All Roofing | Jesus Salazar Bonilla | — | (805) 223 4986 | Other roofers | Ventura · Ventura County | — | — |
| Abraham Building & Consulting INC | Ran Omry Avraham | — | (818) 590 5999 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Abreg Painting INC | Vargas Abraham Castillo | — | (805) 891 5588 | Windows, patio, painters | Fillmore · Ventura County | — | — |
| Abroad Cabling Solutions | Abroad Cabling Solutions | — | (805) 895 7315 | Other | Oak View · Ventura County | — | — |
| Absolute Electric Quality Solutions INC | Josh Alfred Camp Rodelo | — | (805) 551 2625 | Electricians | Ventura · Ventura County | — | — |
| Absolute Plumbing And Rooting INC | Gonzalez Jonathan | — | (805) 223 4502 | Other | Ventura · Ventura County | — | — |
| Absolute Pools Resurfacing INC | Absolute Pools Resurfacing INC | — | (805) 824-1215 | Pool | Oxnard · Ventura County | — | — |
| Abv Scoreboard Services INC | John Leigh Alfino | — | (800) 204 0402 | Electricians | Camarillo · Ventura County | — | — |
| AC Electric | Frank William Gonzales | — | (805) 450 5282 | Electricians | Ventura · Ventura County | — | — |
| AC Electrical Contractors | Andre Maurice Allen | — | (310) 415 1307 | Electricians | Ventura · Ventura County | — | — |
| AC Interiors | AC Interiors | — | (805) 501 6459 | Other | Simi Valley · Ventura County | — | — |
| AC Technology Heating And Air LLC | Alan Joshua Concha | — | (805) 201 8160 | HVAC | Oak View · Ventura County | — | — |
| Acc Electric | Andrew Cameron Couch | — | (818) 518 7453 | Electricians | Simi Valley · Ventura County | — | — |
| Accent Lighting & Electrical | Daryl Clifton Douglas | — | (805) 551 6627 | Electricians | Oak View · Ventura County | — | — |
| Accurate Current Services | Joseph Woodrow Flanagan | — | (805) 331 5584 | Electricians | Camarillo · Ventura County | — | — |
| Accurate Installs Window Filming | Kenneth Vincent Miller | — | (805) 896 1751 | Other | Moorpark · Ventura County | — | — |
| Ace Electrical Systems | Rowbotham Alan | — | (661) 755 3407 | Electricians | Camarillo · Ventura County | — | — |
| Ace Heating And Air | Asa Duane Manning | — | (805) 660 9735 | HVAC | Simi Valley · Ventura County | — | — |