| Christian Electric Blue INC | Vasile Baies | — | (562) 964 3736 | Electricians | La Habra · Orange County | — | — |
| Christian Farley | Christian Farley | christian.farley@gmail.com | (949) 606 6173 | Electricians | San Juan Capistrano · Orange County | — | — |
| Christian M Starr | Christian M Starr | — | (949) 818 9243 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| Christian Nicholas Wisniewski | Christian Nicholas Wisniewski | — | (714) 980 3150 | HVAC | Anaheim · Orange County | — | — |
| Christiano Homes | Steven Robert Christiano | accounting@christianohomes.com | (949) 294-5387 | GC, remodel, ADU | Costa Mesa · Orange County | — | — |
| Christidis General Contracting INC | Anastasios| Chr Istidis Ernest Christidis | — | (714) 373 0275 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Christopher Baxter | Christopher Baxter | — | (916) 834 9964 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Christopher Brown | Christopher Brown | — | (714) 678 8756 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| Christopher Burken | Christopher Burken | — | (714) 595 5063 | Other roofers | Anaheim · Orange County | — | — |
| Christopher Carmean | Christopher Carmean | — | (714) 519 5148 | HVAC | Orange · Orange County | — | — |
| Christopher Construction | Christopher John Femino | — | (714) 642 6900 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Christopher Development Group INC | Daniel Lowell O'bannon | — | (949) 729 1232 | GC, remodel, ADU | Newport Beach · Orange County | — | — |
| Christopher F Frissyn | Christopher F Frissyn | — | (949) 370 2543 | Electricians | San Clemente · Orange County | — | — |
| Christopher Gregory | Christopher Gregory | — | (714) 863 8914 | Other | Anaheim · Orange County | — | — |
| Christopher Kent Goodman | Christopher Kent Goodman | — | (310) 629 5377 | Electricians | Santa Ana · Orange County | — | — |
| Christopher L Likert | Christopher L Likert | — | (949) 365 7300 | GC, remodel, ADU | Laguna Niguel · Orange County | — | — |
| Christopher M Bayne | Christopher M Bayne | — | (562) 858 1548 | GC, remodel, ADU | Santa Ana · Orange County | — | — |
| Christopher M Naghibi | Christopher M Naghibi | — | (949) 238 8070 | GC, remodel, ADU | Laguna Hills · Orange County | — | — |
| Christopher Mays | Christopher Mays | — | (949) 903 3593 | Other | Irvine · Orange County | — | — |
| Christopher Mcandrew | Christopher Mcandrew | — | (818) 919 5808 | GC, remodel, ADU | La Habra · Orange County | — | — |
| Christopher Michael Engineering | Christopher Michael Engineering | — | (714) 225 2985 | Other | Huntington Beach · Orange County | — | — |
| Christopher Quintero | Christopher Quintero | — | (949) 836 8382 | Other | Brea · Orange County | — | — |
| Christopher Sangmun Cho | Christopher Sangmun Cho | — | (213) 718 0414 | GC, remodel, ADU | Fullerton · Orange County | — | — |
| Christopher Schmidt | Christopher Schmidt | christopher.schmidt9@gmx.de | (626) 709 7080 | GC, remodel, ADU | Placentia · Orange County | — | — |
| Christopher Thomas Lawler | Christopher Thomas Lawler | — | (714) 777 7513 | GC, remodel, ADU | Yorba Linda · Orange County | — | — |
| Christy Construction INC | Eric Lee Estes | — | (714) 380 2212 | Electricians | Costa Mesa · Orange County | — | — |
| Christyna Gibson Farry | Christyna Gibson Farry | — | (424) 236 0587 | GC, remodel, ADU | Newport Beach · Orange County | — | — |
| Chromacraft Painting | Dmitrii Avdzhian | — | (949) 439 1271 | Windows, patio, painters | Irvine · Orange County | — | — |
| Chromapro Painting | Chromapro Painting | — | (714) 644 0354 | Windows, patio, painters | Santa Ana · Orange County | — | — |
| Chu's Painting Contractors | Seungman Walter Chu | — | (909) 944 4010 | Windows, patio, painters | Garden Grove · Orange County | — | — |
| Chuanqi Wang | Chuanqi Wang | — | (626) 818 6679 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| Chuck Davis | Chuck Davis | — | (619) 804 0718 | GC, remodel, ADU | Seal Beach · Orange County | — | — |
| Chul Kon Yang | Chul Kon Yang | — | (714) 630 8085 | Electricians | La Palma · Orange County | — | — |
| Chun Wei Cheng | Chun Wei Cheng | — | (949) 207 8035 | GC, remodel, ADU | Fullerton · Orange County | — | — |
| Chung Hongsuck | Chung Hongsuck | — | (949) 316 7591 | Electricians | Aliso Viejo · Orange County | — | — |
| Chunkyung Choi | Chunkyung Choi | — | (562) 743 2777 | Electricians | Brea · Orange County | — | — |
| Church's A Home Improvement Contracting | Samuel David Church | — | (949) 355 6234 | GC, remodel, ADU | Capistrano Beach · Orange County | — | — |
| Churchill Construction | Scott Warren Churchill | — | (714) 920 9775 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Cicero Engineering Incorporated | Frank Rosario Cicero | — | (909) 594 9944 | Other | Brea · Orange County | — | — |
| Cidar Construction | Ioan Creanga | — | (714) 944 6344 | GC, remodel, ADU | Yorba Linda · Orange County | — | — |