| C&g Home Renovations INC | Efren Chavez | — | (805) 290 7423 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| C's Construction | Carlos Luis Chacon | — | (805) 857 2568 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| C1 Electric INC | Carlos Alberto Cervantes Garcia | — | (805) 732 3374 | Electricians | Camarillo · Ventura County | — | — |
| C4 Construction Services INC | Chad William Stansbury | — | (323) 206 2888 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Ca Glass Installation INC | Jorge Alberto Ulloa Mejia | — | (626) 315 7491 | Windows, patio, painters | Thousand Oaks · Ventura County | — | — |
| Ca Sheet Metal Waterproofing Systems | Ca Sheet Metal Waterproofing Systems | — | (818) 488 0709 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| Ca Well Services LLC | Clifton Ole Simonson | — | (805) 477 9805 | Other | Ventura · Ventura County | — | — |
| Cab Interiors LLC | Chad Alan Brandenburg | — | (805) 338 3899 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Cabinet - Pro | Cabinet - Pro | — | (818) 585 3414 | Other | Camarillo · Ventura County | — | — |
| Cabinetpros 101 INC | Ramon Aguilar | — | (818) 585 3414 | Other | Camarillo · Ventura County | — | — |
| Cable Tile | Cable Tile | — | (805) 390 5488 | Other | Newbury Park · Ventura County | — | — |
| Cabrera Landscaping INC | Gabriel Cabrera | gcabreralandscaping@gmail.com | (805) 253 6788 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| Cabrillo Construction | Cabrillo Construction | impallari@gmail.com | — | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Cade Carlson Construction | Cade Joseph Carlson | — | (805) 402 4820 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Caezza Technical Services | Patrick Thomas Caezza | — | (805) 402 7954 | Other | Santa Paula · Ventura County | — | — |
| Cage Construction Solutions | Adrian Enrique Guzman | — | (805) 512 0245 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Cagwin & Dorward LLC | Colin Israel Bemus | — | (310) 579 6154 | Windows, patio, painters | Westlake Village · Ventura County | — | — |
| Cal - Metro Mechanical | Cal - Metro Mechanical | — | (818) 620 6334 | HVAC | Simi Valley · Ventura County | — | — |
| Cal 2000 INC DBA The Rain Drain | Mark Andrew Karch | — | (805) 377 0527 | Other | Camarillo · Ventura County | — | — |
| Cal Air & Heating Services | Murillo Frank | — | (805) 432 4308 | HVAC | Fillmore · Ventura County | — | — |
| Cal Art Landscape | Cal Art Landscape | — | (805) 797 3389 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| Cal Certified Inspections | Cal Certified Inspections | — | (818) 585-7436 | Inspectors | Calabasas · Ventura County | — | — |
| Cal Coast Concrete & Construction | Todd Alan Kanteman | — | (805) 583 8320 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Cal Coast Construciton | Cal Coast Construciton | — | (805) 795 1140 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Cal Coast Plumbing | Calvin George Jr Miller | — | (805) 482 3420 | Other | Camarillo · Ventura County | — | — |
| Cal Coast Plumbing | Calvin George Iii Miller | — | (805) 482 3420 | Other | Camarillo · Ventura County | — | — |
| Cal Coast Renovation | Daniel Roy Allen Kleinrok | — | (818) 400 4181 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Cal Coast Tile And Stone | Cal Coast Tile And Stone | — | (805) 754 7429 | Other | Oxnard · Ventura County | — | — |
| Cal Fire Protection INC | Jose Luis Perez | — | (805) 258 9594 | Other | Ojai · Ventura County | — | — |
| Cal Prestige Construction And Restoration | Cal Prestige Construction And Restoration | — | (805) 204-8885 | Restoration | Oxnard · Ventura County | — | — |
| Cal Roofing INC | Judy Darlene Hein | — | (805) 522 0905 | Other roofers | Simi Valley · Ventura County | — | — |
| Cal Turf Co | Gustavo Adolfo Tobar Quevedo | — | (805) 236 3345 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| Cal Vet Electric INC | Tyson Deshon Hall | contact@calvetelectric.com | (805) 827 0330 | Electricians | Camarillo · Ventura County | — | — |
| Cal-coast Construction Specialties INC | Brian Lee Christianson | — | (805) 987 4062 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Cal-state Construction Industries | Jared Perez | — | (805) 906 0882 | GC, remodel, ADU | Fillmore · Ventura County | — | — |
| Cal-state Site Services | Richard James Modlin | — | (805) 527 6500 | Other | Simi Valley · Ventura County | — | — |
| Cal-western Overhead Garage Doors And Openers | John Michael Chapman | — | (805) 672 2312 | Other | Ventura · Ventura County | — | — |
| Calabasas Builders | Barbara Mannette Coo Billig | — | (805) 496 3125 | Electricians | Westlake Village · Ventura County | — | — |
| Calabasas Electric | John Whitney Williams | — | (805) 390 5942 | Electricians | Simi Valley · Ventura County | — | — |
| Calboy INC | Bradley Jon Boyajian | — | (818) 419 9989 | Windows, patio, painters | Simi Valley · Ventura County | — | — |