| Climate Essentials Heating And Cooling | Climate Essentials Heating And Cooling | — | (714) 235 5799 | HVAC | Perris · Riverside County | — | — |
| Cline Electric | Austin Ryan Cline | — | (951) 956 7359 | Electricians | Murrieta · Riverside County | — | — |
| Clines Electric | Michael Jason Clines | — | (760) 978 5629 | Electricians | Temecula · Riverside County | — | — |
| Clinton Homes INC | Manuel Garibay Valencia | — | (909) 208 7747 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Closet Factory Inland Empire | Douglas Andrew King | — | (951) 460 4166 | Other | Corona · Riverside County | — | — |
| Cloud Electric INC | Joseph Baptiste Cloud | — | (951) 795 6252 | Electricians | Temecula · Riverside County | — | — |
| Cloud Nine Roofing And Construction LLC | Alejandro Guillen | — | (951) 385 8011 | Other roofers | Moreno Valley · Riverside County | — | — |
| Clp Landscaping LLC | Palacios Cuitlahuac Lopez | clplandscaping@yahoo.com | (951) 992 8161 | Windows, patio, painters | Moreno Valley · Riverside County | — | — |
| Club Construction | Richard Kenneth Pio | — | (760) 251 1415 | GC, remodel, ADU | Desert Hot Springs · Riverside County | — | — |
| Clyde Hampton Iii Construction Services | Clyde Iii Hampton | — | (951) 796 8021 | GC, remodel, ADU | San Jacinto · Riverside County | — | — |
| Clyde's Custom Builds | Clyde Elwin Ii Swadener | clyde@clydesbuilds.com | (619) 871 6610 | GC, remodel, ADU | Nuevo · Riverside County | — | — |
| Cm Construction | Christopher Ray Meza | — | (951) 497 8611 | GC, remodel, ADU | Moreno Valley · Riverside County | — | — |
| Cm Corp Facilities Service | Greg Alan Miller | — | (949) 313 8099 | Electricians | Temecula · Riverside County | — | — |
| Cm Plumbing Services INC | Christopher Lee Murrill | — | (833) 934 1101 | Other | Norco · Riverside County | — | — |
| Cmbuilder | Mireles Carlos | — | (951) 892 9731 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Cmd Painting | Craig Monte Discher | — | (760) 641 6639 | Windows, patio, painters | Palm Springs · Riverside County | — | — |
| Cmr Construction & Restoration | Christopher Michael Rivera | — | (951) 534 1987 | GC, remodel, ADU | Nuevo · Riverside County | — | — |
| Cmr Construction INC | Cesar Mario Rodriguez | — | (760) 636 0350 | GC, remodel, ADU | La Quinta · Riverside County | — | — |
| Cms Carpentry INC | Clayton Mark Schutjer | — | (801) 556 5197 | Other | Palm Desert · Riverside County | — | — |
| Cms Resurfacing | Cms Resurfacing | — | (760) 320 5115 | Other | Palm Springs · Riverside County | — | — |
| Cmz Excavation INC | Christopher Michael Zarp | — | (909) 732 6907 | Other | Corona · Riverside County | — | — |
| Cn School And Office Solutions INC | Heather Marie Wilson | — | (949) 597 0123 | Other | Jurupa Valley · Riverside County | — | — |
| Co Brothers LLC | Luo David | — | (626) 535 3841 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Coachella Construction | Larry Maurice Sweeden | — | (909) 821 9688 | Electricians | Palm Desert · Riverside County | — | — |
| Coachella Valley Construction Company | Francisco C Esquivel | — | (210) 719 9809 | GC, remodel, ADU | Thermal · Riverside County | — | — |
| Coachella Valley Custom Cabinets INC | Gerardo Martinez | — | (760) 902 0980 | Other | Cathedral City · Riverside County | — | — |
| Coachella Valley Electric | Hank Edward Henss | — | (760) 215 8729 | Electricians | Bermuda Dunes · Riverside County | — | — |
| Coachella Valley Enterprises INC | Fredy Alonzo Obeso | — | (760) 300 7411 | GC, remodel, ADU | Cathedral City · Riverside County | — | — |
| Coachella Valley Glass Company | David Mark Weaver | — | (760) 347 0097 | Windows, patio, painters | Indio · Riverside County | — | — |
| Coachella Valley Lighting & Electric | Ruben Gutierrez Jr Urrutia | — | (760) 578 1700 | Electricians | Cathedral City · Riverside County | — | — |
| Coachella Valley Maintenance | John Peter Xepoleas | — | (801) 419 5654 | GC, remodel, ADU | Palm Desert · Riverside County | — | — |
| Coachella Valley Masonry INC | Edward Ulises Perez Arce | — | (760) 641 0472 | Other | Palm Desert · Riverside County | — | — |
| Coachella Valley Modern Home Gc | Coachella Valley Modern Home Gc | — | (760) 296 0906 | GC, remodel, ADU | Coachella · Riverside County | — | — |
| Coachella Valley Screens And Awnings | Coachella Valley Screens And Awnings | — | (760) 342 7272 | Other | Indio · Riverside County | — | — |
| Coalbert Plumbing | Coalbert Plumbing | — | (951) 751 2222 | Other | Moreno Valley · Riverside County | — | — |
| Coar's Electric | Cecil Calvin Jr Coar | — | (951) 642 9894 | Electricians | Temecula · Riverside County | — | — |
| Coast Cities Construction | John Phillip Frazzini | — | (909) 260 9420 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Coast Drywall | Coast Drywall | — | (909) 227 3658 | Other | Riverside · Riverside County | — | — |
| Coast Maintenance & Building | Coast Maintenance & Building | — | (714) 996 6012 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Coast Skylights | Coast Skylights | — | (800) 963 1170 | GC, remodel, ADU | Lake Elsinore · Riverside County | — | — |