| Cactus Wren Construction INC | Kimberly Lynette Moodey | — | (714) 501 2167 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Cadd Works INC | Ricardo Perez Aguilar | — | (760) 272 5183 | GC, remodel, ADU | Thousand Palms · Riverside County | — | — |
| Cadence Pro-painting Co | Edward Jess Reyes | — | (951) 789 8994 | Windows, patio, painters | Riverside · Riverside County | — | — |
| Cadisa Remodeling | Perez Joaquin Torres | — | (951) 973 9909 | GC, remodel, ADU | Winchester · Riverside County | — | — |
| Caffery Capital Development LLC | Cody Cole Caffery | — | (760) 272 1885 | GC, remodel, ADU | La Quinta · Riverside County | — | — |
| Cage Warp Electric | Kelvin Wayne Johnson | — | (951) 349 2177 | Electricians | Banning · Riverside County | — | — |
| Cahuilla Mountain Construction | Adrian Salgado | — | (951) 663 2345 | GC, remodel, ADU | San Jacinto · Riverside County | — | — |
| Cahuilla Pool Construction INC | James Scott Hanousek | — | (760) 408 8737 | Pool | Palm Desert · Riverside County | — | — |
| Caiman Electric Heating & Cooling | Diego Robles | — | (951) 381 0481 | HVAC | Banning · Riverside County | — | — |
| Cak Concrete & Construction INC | Christopher Allen Kretz | — | (760) 609 2739 | GC, remodel, ADU | La Quinta · Riverside County | — | — |
| Cal - Crete | Cal - Crete | — | (951) 269 7765 | Other | Menifee · Riverside County | — | — |
| Cal - State Roofing | Francisco Javier Lagunas | — | (714) 813 7736 | Other roofers | Nuevo · Riverside County | — | — |
| Cal - Tex Fire Protection Company | Mark Robin Hanna | — | (909) 816 8143 | Other | Riverside · Riverside County | — | — |
| Cal - West Maintenance | Michael Edward Whiting | — | (951) 270 0667 | Windows, patio, painters | Norco · Riverside County | — | — |
| Cal - West Pools And Spas INC | Roy Paul Phillips | — | (951) 698 5040 | Pool | Murrieta · Riverside County | — | — |
| Cal Built Manufacturing INC | Mansoor Ghulamali Ghelani | — | (866) 698 8880 | HVAC | Mira Loma · Riverside County | — | — |
| Cal Co Plumbing | Michael Alan Calhoun | — | (800) 970 5885 | Other | Perris · Riverside County | — | — |
| Cal Coast Roofing & Raingutters | Christina Frances Davis | — | (714) 827 5371 | Other roofers | Corona · Riverside County | — | — |
| Cal Development INC | Louis Ralph Murdica | — | (760) 275 6261 | GC, remodel, ADU | Sky Valley · Riverside County | — | — |
| Cal Electric LLC | Michael Bryan Ford | — | (951) 533 6701 | Electricians | Riverside · Riverside County | — | — |
| Cal Elite Underground INC | Armando Garcia | — | (951) 200 4606 | Other | Corona · Riverside County | — | — |
| Cal Empire Engineering INC | Gregory Martin Miller | — | (626) 915 8030 | Other | Corona · Riverside County | — | — |
| Cal Ironworks INC | Sean Michael Dempsey | — | (562) 244 0182 | Other | Temecula · Riverside County | — | — |
| Cal Pacific Construction | Chris Lynn Knebel | info@calpacificconstruction.com | (858) 774-3612 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Cal Pacific INC | Joey Roger Imperial | — | (951) 537 8062 | GC, remodel, ADU | Hemet · Riverside County | — | — |
| Cal Star Mobile Home Construction INC | Justin Donovan Troxel | — | (951) 547 5900 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Cal State Construction Management INC | Heleo Jr Esquer Cervantes | — | (951) 234 4486 | GC, remodel, ADU | Lake Elsinore · Riverside County | — | — |
| Cal View Construction | Trong Duc Nguyen | — | (951) 236 8957 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Cal West Air Conditioning & Heating | Ethan J Barnard | — | (562) 387 9286 | HVAC | Indio · Riverside County | — | — |
| Cal West Tile & Flooring INC | Joshua Anthony West | — | (951) 378 5970 | Other | Temecula · Riverside County | — | — |
| Cal West Underground INC | Jeffrey Michael Abernathy | — | (951) 371 6775 | Other | Norco · Riverside County | — | — |
| Cal's Air Conditioning & Heating | Cal's Air Conditioning & Heating | — | (951) 689 0411 | HVAC | Riverside · Riverside County | — | — |
| Cal-kool HVAC Services INC | Deborrah Anne Miner | — | (951) 244 4412 | HVAC | Menifee · Riverside County | — | — |
| Cal-mex Plumbing INC | Omar Ali Abraham Caxaj Tzoc | — | (951) 312 3512 | Other | Riverside · Riverside County | — | — |
| Cal-oso Backflow Services LLC | Johnny Eric Osornia | — | (951) 434 4756 | Other | Menifee · Riverside County | — | — |
| Cal-pacific Contracting LLC | Josh Marquard | — | (951) 434 5503 | GC, remodel, ADU | Canyon Lake · Riverside County | — | — |
| Cal-west Landscape | Karen Marie Whiting | francisco@calwestlandscape.com | (951) 270 0667 | Windows, patio, painters | Norco · Riverside County | — | — |
| Cal-west Reglazing | Cal-west Reglazing | — | (951) 519 0343 | Other | Corona · Riverside County | — | — |
| Calacon INC | Scott Lee Mabe | — | (760) 275 4995 | GC, remodel, ADU | Mountain Center · Riverside County | — | — |
| Calcom Roofing INC | William Carlyle Leinenweaver | — | (951) 277 3886 | Other roofers | Corona · Riverside County | — | — |