| Coyle Construction INC | David Gerard Coyle | — | (714) 717 1351 | GC, remodel, ADU | Tustin · Orange County | — | — |
| Cozad Electric INC | Jack Stein Cozad | — | (714) 488 4919 | Electricians | Costa Mesa · Orange County | — | — |
| Cozy Pros Heating & Air LLC | Donovan Christian Grossi | — | (714) 768 2242 | HVAC | Cypress · Orange County | — | — |
| Cp Construction | Christopher James Paschke | — | (949) 231 2868 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| Cp Plumbing And Drain Service | Perezdolores Christian | — | (714) 760 0987 | Other | Garden Grove · Orange County | — | — |
| Cp1 Electric | Curtis Anthony Peters | — | (949) 637 2042 | Electricians | Laguna Niguel · Orange County | — | — |
| Cpacinc.com | Robbie Lee Corey | — | (714) 692 5044 | Other | Anaheim · Orange County | — | — |
| Cpc Landscape INC | Cesar Pena | — | (714) 770 4361 | Windows, patio, painters | Santa Ana · Orange County | — | — |
| Cpm Concrete Co | Marshall John Barabasch | — | (714) 882 0674 | Other | Costa Mesa · Orange County | — | — |
| Cps Care Paint Solutions | Barajas Federico Vallejo | — | (714) 604 5823 | Windows, patio, painters | Santa Ana · Orange County | — | — |
| Cpu Flooring | Cpu Flooring | — | (714) 510 0621 | Other | Anaheim · Orange County | — | — |
| Cqms Construction Quality Management Solutions INC | Saeid Asgari | — | (949) 379 4481 | Other | Irvine · Orange County | — | — |
| Crack Patcher Of California INC | Kenneth Thomas Turner | — | (714) 309 5845 | Other | Orange · Orange County | — | — |
| Crackfree Plumbing LLC | Gregg Scot Hooper | — | (949) 716 9526 | Other | Mission Viejo · Orange County | — | — |
| Craft Guild Construction | Joshua Eli Bray | — | (949) 212 0452 | GC, remodel, ADU | Dana Point · Orange County | — | — |
| Craft Painting Co | Seng Il Chung | — | (714) 588 9883 | Windows, patio, painters | Anaheim · Orange County | — | — |
| Craft Plumbing | Craft Plumbing | — | (714) 887 3583 | Other | Buena Park · Orange County | — | — |
| Craftsman Design | Craftsman Design | — | (562) 755 1119 | GC, remodel, ADU | Los Alamitos · Orange County | — | — |
| Craftsman Glass Co | Mark Richard Simons | — | (949) 554 8961 | Windows, patio, painters | Costa Mesa · Orange County | — | — |
| Craftsman Steele Construction Co | Michael Eugene Steele | — | (949) 279 1718 | GC, remodel, ADU | Dana Point · Orange County | — | — |
| Craftsmen Flooring LLC | James Dale Strickland | — | (714) 914 1040 | Other | Garden Grove · Orange County | — | — |
| Craftsmen Plumbing INC | William Smith Combe | — | (714) 972 8054 | HVAC | Costa Mesa · Orange County | — | — |
| Crafttech Construction | Wyatt Eric | — | (714) 412 5608 | GC, remodel, ADU | Placentia · Orange County | — | — |
| Cragin's Building Construction | Sean Joseph Cragin | — | (323) 863 2227 | GC, remodel, ADU | Buena Park · Orange County | — | — |
| Craig B Henderson Custom Painting | Craig B Henderson Custom Painting | — | (949) 768 1477 | Windows, patio, painters | Trabuco Canyon · Orange County | — | — |
| Craig Beinlich Construction | Craig Charles Beinlich | — | (714) 283 2877 | GC, remodel, ADU | Orange · Orange County | — | — |
| Craig Carney Builders INC | Craig Steven Carney | — | (949) 683 0220 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| Craig Hansen Tile Company | Leonard Dusinus Hansen | — | (714) 345 7785 | Other | Rancho Santa Margarita · Orange County | — | — |
| Craig J De Salvo | Craig J De Salvo | — | (617) 875 6178 | Electricians | Laguna Hills · Orange County | — | — |
| Craig Loyd | Craig Loyd | — | (714) 545 8882 | Electricians | Fountain Valley · Orange County | — | — |
| Craig M Houck DBA Custom Glass | Custom Glass | — | (562) 431 4740 | Windows, patio, painters | Los Alamitos · Orange County | — | — |
| Craig Pauley & Associates | Noel Craig Pauley | — | (714) 271 3636 | Windows, patio, painters | Tustin · Orange County | — | — |
| Craig S Johnson Jr | Craig S Johnson Jr | — | (714) 951 1599 | Other | Huntington Beach · Orange County | — | — |
| Craig Schmidt Pool Service | Craig Eugene Schmidt | — | (714) 273 9135 | Pool | Santa Ana · Orange County | — | — |
| Craig Scott Raczek | Craig Scott Raczek | — | (714) 609 1717 | GC, remodel, ADU | Yorba Linda · Orange County | — | — |
| Craig Warren INC DBA Sandalwood Construction | Deanne Marie Warren | — | (562) 468 0200 | GC, remodel, ADU | Los Alamitos · Orange County | — | — |
| Crandall's Plumbing INC | Samuel Arthur Crandall | — | (714) 465 7819 | Other | Huntington Beach · Orange County | — | — |
| Crane Rental Service INC | Lori Ann Hunter | — | (714) 997 3100 | Other | Orange · Orange County | — | — |
| Crane Wire & Communications INC | Frank Russell Crane | — | (949) 770 5010 | Other | Laguna Hills · Orange County | — | — |
| Crank Brothers Roofing Company INC | Frank Eugene Blefari | — | (949) 548 5569 | Other roofers | Tustin · Orange County | — | — |