| Clifton O Simonson | Clifton O Simonson | — | (805) 477 9810 | Other | Ventura · Ventura County | — | — |
| Climatech HVAC Services INC | Sergio Isaac | — | (805) 208 1090 | HVAC | Oxnard · Ventura County | — | — |
| Clint Austin Mc Cabe | Clint Austin Mc Cabe | — | (818) 917 4733 | Electricians | Westlake Village · Ventura County | — | — |
| Clockwork Climate Control | Michael Patrick Manning | — | (559) 920 2944 | HVAC | Ventura · Ventura County | — | — |
| Clopen Garage Doors And Access | Clopen Garage Doors And Access | — | (805) 248 0825 | Other | Oxnard · Ventura County | — | — |
| Clou Construction | James David Connick | — | (805) 223 5245 | GC, remodel, ADU | Ojai · Ventura County | — | — |
| Cloud Nine Builders | Cloud Nine Builders | elma7yeh@gmail.com | (818) 877 0034 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| Clover Masonry Construction | Spencer Everett Love | — | (805) 498 4216 | Other | Moorpark · Ventura County | — | — |
| Clyde's Plumbing | Clyde's Plumbing | — | (805) 488 2612 | Other | Camarillo · Ventura County | — | — |
| Cm Electric | Christopher George Martinez | reception@cmelectric.com | (805) 501 4045 | Electricians | Simi Valley · Ventura County | — | — |
| Cnc Painting INC | Arguello Cesar Ortiz | — | (805) 317 5348 | Windows, patio, painters | Fillmore · Ventura County | — | — |
| Cnz Design + Build | Cnz Design + Build | — | (510) 280 4686 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Coast & Croft Construction | Jonathan George Reber | — | (805) 890 0807 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Coast Comfort Air & Heater Repair Ventura | Coast Comfort Air & Heater Repair Ventura | — | (805) 977-0616 | HVAC | Ventura · Ventura County | — | — |
| Coast Door And Hardware DBA Cdh Construction | William Thomas Jr Fairbanks | — | (818) 735 7311 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| Coast Engineering Company | Lionel Gutierrez | — | (805) 732 5144 | Other | Ventura · Ventura County | — | — |
| Coast Grading Company | William Patrick Stalder | — | (805) 844 6969 | Other | Oak View · Ventura County | — | — |
| Coast It Systems | Mikael Acosta Melendez | — | (805) 201 8942 | Electricians | Ventura · Ventura County | — | — |
| Coast Pump INC | William David Hughes | — | (805) 484 0340 | Other | Camarillo · Ventura County | — | — |
| Coast To Coast Garage Door | Coast To Coast Garage Door | coasttocoastgdoors@att.net | (805) 947-8702 | Other | Ventura · Ventura County | — | — |
| Coast To Coast Glass Corporation | Todd Ralph Leiterding | — | (805) 984 5573 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| Coast To Coast Heating & Air Condition | Jose Abel Carmona | — | (805) 396 4371 | HVAC | Oxnard · Ventura County | — | — |
| Coast To Coast Rooter LLC | Cesar Junior Ochoa | — | (805) 212 2080 | Other | Ventura · Ventura County | — | — |
| Coast Woodworking | Coast Woodworking | — | (805) 386 7088 | Other | Oxnard · Ventura County | — | — |
| Coastal Blinds & Drapery | Coastal Blinds & Drapery | — | (805) 667 8202 | Other | Ventura · Ventura County | — | — |
| Coastal Boilers INC | Mark Anthony Leazer | admin@coastalboilers.com | (626) 263 0304 | HVAC | Camarillo · Ventura County | — | — |
| Coastal Breeze Mobile Screens INC | Abel Martin Miles | — | (805) 701 9929 | Other | Ventura · Ventura County | — | — |
| Coastal Concrete INC | Crispin Agraz | — | (805) 790 5204 | Other | Oxnard · Ventura County | — | — |
| Coastal Constructors INC | Philip Donald Riege | — | (805) 320 5704 | Electricians | Ojai · Ventura County | — | — |
| Coastal County Construction INC | Robert B Burnett | — | (805) 340 7656 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Coastal Design & Build LLC | Daniel Steven Rangel | — | (805) 300 3179 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Coastal Designscapes | Coastal Designscapes | — | (805) 827 5006 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| Coastal Electric | Robert Alan Volkman | — | (251) 432-0644 | Electricians | Ventura · Ventura County | — | — |
| Coastal Elite Plumbing | Amy Kay Nunes | george@coastaleliteplumbing.com | (805) 377 7021 | Other | Camarillo · Ventura County | — | — |
| Coastal Finish Carpentry And Design | Coastal Finish Carpentry And Design | — | (805) 490 4807 | Other | Camarillo · Ventura County | — | — |
| Coastal Pools And Spas | Coastal Pools And Spas | — | (805) 901 7989 | Pool | Ventura · Ventura County | — | — |
| Coastal Prime Construction | John Salvador Jr Casillas | — | (805) 336 1809 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Coastal Sheet Metal | Coastal Sheet Metal | — | (805) 612 9139 | Other | Ventura · Ventura County | — | — |
| Coastal Shore Plumbing LLC | David M Medina | davey@coastalshoreplumbing.com | (805) 607 5849 | Other | Port Hueneme · Ventura County | — | — |
| Coastal Tile And Stone | Coastal Tile And Stone | — | (805) 642 5292 | Other | Ventura · Ventura County | — | — |