| Cotter Construction - Christopher Cotter | Christopher James Cotter | — | (909) 528 1358 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Cotter Construction INC | Andrew William Cotter | — | (951) 833 7842 | Other | Canyon Lake · Riverside County | — | — |
| Cottonwood Mechanical Service | Francisco Jose Solis | — | (840) 251 3618 | HVAC | Palm Springs · Riverside County | — | — |
| Coulson Crown Moulding & Construction | Jeffrey Scott Coulson | — | (562) 261 5664 | GC, remodel, ADU | Jurupa Valley · Riverside County | — | — |
| Coulter Electric INC | Robert Orrin Coulter | — | (760) 660 2838 | Electricians | Indio · Riverside County | — | — |
| Country Boys Landscape | Country Boys Landscape | — | (951) 318 8534 | Windows, patio, painters | Winchester · Riverside County | — | — |
| Country Care Construction INC | Elmer Rafael Gonzalez Garcia | — | (951) 566 6290 | GC, remodel, ADU | Menifee · Riverside County | — | — |
| Country Club Awning | Country Club Awning | — | (760) 346 5006 | Other | Bermuda Dunes · Riverside County | — | — |
| Country Club Construction | Clayton Scott Fisher | — | (760) 702 6755 | GC, remodel, ADU | La Quinta · Riverside County | — | — |
| Country Club Construction LLC | Erik Daniel Jacobsson | — | (760) 636 8209 | GC, remodel, ADU | Palm Desert · Riverside County | — | — |
| Country Club Electric INC | Donald Allen Frenter | — | (760) 275 5988 | Electricians | Palm Springs · Riverside County | — | — |
| Country Estate Fence Company INC | Elvia Cobian | — | (800) 286 0999 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Country Home Inspection & Termite Inc. | Country Home Inspection & Termite Inc. | — | (831) 609-6017 | Inspectors | Ben Lomond · Riverside County | — | — |
| Countryside Landscape | Countryside Landscape | — | (951) 438 0474 | Windows, patio, painters | Moreno Valley · Riverside County | — | — |
| County Electric | Dale Andrew Sparks | — | (951) 522 8855 | Electricians | Menifee · Riverside County | — | — |
| Countywide Electric | Colbert Joey | — | (951) 349 9985 | Electricians | Moreno Valley · Riverside County | — | — |
| Courtmaster Sports Of California INC | Jeffrey Daniel Brooker | — | (760) 251 5201 | Other | North Palm Springs · Riverside County | — | — |
| Cousin Tree & Palm Care INC | Belinda Diaz | — | (714) 917 7957 | Other | Lake Elsinore · Riverside County | — | — |
| Couts Heating & Cooling INC | Brian Douglas Lynch | — | (951) 287 5560 | HVAC | Corona · Riverside County | — | — |
| Cova Construction Services | Covarrubias Martin | — | (951) 733 6978 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Coval Construction | Jesus Rios Gonzalez | contact@coval-construction.com | (760) 766 6233 | GC, remodel, ADU | Thermal · Riverside County | — | — |
| Covarrubias Traffic Control | Ricardo Covarrubias | — | (909) 376 6682 | Other | Moreno Valley · Riverside County | — | — |
| Cove Electric INC | Charles Blair Bojkovsky | — | (760) 360 0036 | Electricians | Palm Desert · Riverside County | — | — |
| Covello's Pacific Air Care INC | Perry Anthony Sr Covello | — | (714) 469 1757 | HVAC | Riverside · Riverside County | — | — |
| Covey Electric INC | Daniel Arturo Miranda | — | (951) 323 9267 | Electricians | Mira Loma · Riverside County | — | — |
| Cowboys New Home Solutions | David De Los Santo Flores | — | (951) 297 7114 | Other roofers | Temecula · Riverside County | — | — |
| Cowel Construction | Daniel Dean Cowel | — | (951) 813 8610 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Cozar Construction Company | Juan Pablo Lopez Cozar | info@cozarconstruction.com | (323) 906 6211 | GC, remodel, ADU | Hemet · Riverside County | — | — |
| Cp Acoustical Ceilings | Cp Acoustical Ceilings | — | (949) 355 2363 | Other | Menifee · Riverside County | — | — |
| Cp Construction Services | Priscilla Ann Luna | customerservice@cpconstructionservices.com | (951) 255 2303 | GC, remodel, ADU | Jurupa Valley · Riverside County | — | — |
| Cp Pools LLC | Paul West Palacios | — | (760) 696 7915 | Pool | Murrieta · Riverside County | — | — |
| Cpmarkwith INC | Charles Patrick Markwith | — | (760) 861 5350 | GC, remodel, ADU | Palm Springs · Riverside County | — | — |
| Cpr Builders INC | Pedro P Aguayo | — | (888) 380 1338 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Cpr General Contractor INC | Flores Cipriano Robles | — | (951) 732 3458 | GC, remodel, ADU | Perris · Riverside County | — | — |
| Cr Builders LLC | Hector Manuel Portillo | — | (951) 502 8951 | GC, remodel, ADU | Moreno Valley · Riverside County | — | — |
| Cr Construction INC | Cristobal Rosas-Cota | — | (760) 540 9747 | GC, remodel, ADU | Indio · Riverside County | — | — |
| Cr Corp | Christopher Michael Ruff | — | (951) 542 0149 | HVAC | Jurupa Valley · Riverside County | — | — |
| Cr Socal Paints INC | Rios Medel Celestino | tino@crsocalpaints.com | (951) 349 9954 | Windows, patio, painters | San Jacinto · Riverside County | — | — |
| Cr3 Plumbing | Cr3 Plumbing | — | (951) 505 2079 | Other | Calimesa · Riverside County | — | — |
| Craft Carpentry | Craft Carpentry | — | (310) 346 5516 | Other | Menifee · Riverside County | — | — |