| C T C Framing | C T C Framing | — | (951) 240 8899 | Other | Murrieta · Riverside County | — | — |
| C T Concrete Cutting INC | Christopher Lee Tompkins | — | (951) 698 7745 | Other | Murrieta · Riverside County | — | — |
| C T Electric | Charles Edward Tittle | — | (951) 940 5780 | Electricians | Perris · Riverside County | — | — |
| C T R Concrete Pumping | C T R Concrete Pumping | — | (619) 726 4828 | Other | Temecula · Riverside County | — | — |
| C V C Home Repair | C V C Home Repair | — | (760) 583 6140 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| C V Construction | Michael Edward Chudzicki | office@cvconstruction.com | (909) 214 0665 | GC, remodel, ADU | Corona · Riverside County | — | — |
| C V Schaefer | C V Schaefer | — | (951) 216 5585 | Other | Temecula · Riverside County | — | — |
| C W C Plumbing Co | Charles William Coates | — | (909) 238 4488 | Other | Moreno Valley · Riverside County | — | — |
| C W F C INC | Shawn James Christ Kohnle | — | (909) 709 9492 | Electricians | Beaumont · Riverside County | — | — |
| C W Restaurant Builder & Designs | Chuck Chang Woo | — | (714) 746 6810 | Electricians | Corona · Riverside County | — | — |
| C X I Construction Contractors | Craig Masaki Watanabe | — | (800) 205 0929 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| C&a Roofing INC | Juan Luis Suarez Galvan | — | (323) 370 0100 | Other roofers | Moreno Valley · Riverside County | — | — |
| C&c Contractor Group INC | Jeremy Scott Duffey | — | (951) 326 0155 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| C&c Shutters And Window Coverings | C&c Shutters And Window Coverings | — | (951) 897 3721 | Other | Menifee · Riverside County | — | — |
| C&f Marble & Tile INC | Carlos Alberto Caldelas | — | (714) 862 6511 | Other | Riverside · Riverside County | — | — |
| C&g Concrete Construction | Antonio Yobani Garcia | — | (760) 668 1816 | Other | Coachella · Riverside County | — | — |
| C&s Air Mechanical INC | Javier Soto | — | (951) 550 9497 | HVAC | Lake Elsinore · Riverside County | — | — |
| C-rod Electric INC | Cesar Nieto Rodriguez | — | (562) 900 6486 | Electricians | Moreno Valley · Riverside County | — | — |
| C.paint Solutions | C.paint Solutions | mario@cpaintsolutions.com | (951) 345 0916 | Windows, patio, painters | Perris · Riverside County | — | — |
| C3 Painting LLC | Calvin Le Phok | — | (951) 816 1354 | Windows, patio, painters | Temecula · Riverside County | — | — |
| C3do Concrete Cutting & Coring | C3do Concrete Cutting & Coring | — | (951) 526 8030 | Other | Temecula · Riverside County | — | — |
| C4 Construction & Remodeling | Cesar Wolf Jimenez | — | (619) 292 6514 | GC, remodel, ADU | Anza · Riverside County | — | — |
| C4 Construction INC | Claudia Cristina Carlos | — | (559) 250 0697 | GC, remodel, ADU | Winchester · Riverside County | — | — |
| Ca Elite Drywall INC | Howard William Lange | — | (951) 258 2886 | Other | Lake Elsinore · Riverside County | — | — |
| Ca Furniture Prefab - Install | Freddy Lopez | — | (323) 420 7195 | Other | Corona · Riverside County | — | — |
| Ca Green Home Builders INC | Antonio Chaidez | — | (951) 217 0166 | GC, remodel, ADU | Moreno Valley · Riverside County | — | — |
| Ca Light General Contractor INC | Charlie Afable Light | — | (323) 388 6176 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Ca Roofing Services | Avendano-cruz Gildardo | info@caroofingservices.com | (951) 522 1651 | Other roofers | Beaumont · Riverside County | — | — |
| Ca's Finest & Quality Pool Plastering INC | Kevin Alexander Retana Aragon | — | (909) 520 9581 | Pool | Moreno Valley · Riverside County | — | — |
| Cabadas Tile | Cabadas Tile | — | (909) 210 0949 | Other | Lake Elsinore · Riverside County | — | — |
| Caballero Construction INC | Gonzalez Jose Sandoval | contact_us@caballeroconstruction.com | (562) 394 6813 | GC, remodel, ADU | Jurupa Valley · Riverside County | — | — |
| Cabinet Concepts By Joyce INC | Larry Richard Hoddick | — | (760) 272 4282 | Other | Palm Desert · Riverside County | — | — |
| Cabinetry And Millwork By Design | Cabinetry And Millwork By Design | — | (714) 349 9191 | Other | Temecula · Riverside County | — | — |
| Cabinets By Precision Works INC DBA Precision Works | Pierre Yves Letellier | — | (760) 342 1133 | GC, remodel, ADU | Indio · Riverside County | — | — |
| Cabinets Etc | Michael Luis Perez | — | (760) 774 0962 | GC, remodel, ADU | Indio · Riverside County | — | — |
| Cable Link Communications | Cable Link Communications | — | (323) 572 7323 | Other | Banning · Riverside County | — | — |
| Cabo Pool Service & Repair INC | Aguilera Jose Rodriguez | — | (760) 698 1336 | Pool | Coachella · Riverside County | — | — |
| Cabo Pools | Cabo Pools | — | (951) 453 0791 | Pool | Murrieta · Riverside County | — | — |
| Cabs Heating & Air Conditioning | Cabs Heating & Air Conditioning | — | (916) 243-6431 | HVAC | West Sacramento · Riverside County | — | — |
| Caceres Air Solutions INC | Johan Steven Caceres Franco | team@caceresairsolution.com | (909) 805 4364 | HVAC | Jurupa Valley · Riverside County | — | — |