| Cali Pg Construction | Garcia Contreras Pedro | — | (714) 574 6700 | GC, remodel, ADU | Garden Grove · Orange County | — | — |
| Cali Pro Fence | Cruzberto Vergara Gutierrez | — | (714) 381 6847 | Other | Buena Park · Orange County | — | — |
| Cali Reglazing INC | Dominguez Ronald Gomez | — | (925) 446 5915 | Other | Anaheim · Orange County | — | — |
| Cali Star Construction | Joseph Tai Dovinh | — | (714) 548 8289 | GC, remodel, ADU | Westminster · Orange County | — | — |
| Cali Viet INC | Dong Hai Pham | — | (714) 274 5557 | GC, remodel, ADU | Midway City · Orange County | — | — |
| Cali's Next Level Painting | Francisco Marcelino Jimenez Cruz | — | (714) 797 5350 | Windows, patio, painters | Santa Ana · Orange County | — | — |
| Cali-fabworks Metal Fabrication | Cali-fabworks Metal Fabrication | — | (562) 787 4766 | Other | Placentia · Orange County | — | — |
| Caliagua INC | Cory William Wolfrom | — | (866) 416 4214 | HVAC | Fullerton · Orange County | — | — |
| Caliba INC | Adam Allen Othman | — | (714) 886 2887 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| Calibar Plumbing INC | Sameh Todary | — | (949) 807 8879 | Other | Costa Mesa · Orange County | — | — |
| Caliber Air | Caliber Air | — | (949) 244 7364 | HVAC | Huntington Beach · Orange County | — | — |
| Caliber Builders LLC | Teagan Rose Barnes | — | (949) 579 0790 | GC, remodel, ADU | Dana Point · Orange County | — | — |
| Caliber Concrete Pumping INC | Chad Tracey Fischer | — | (714) 715 3094 | Other | Huntington Beach · Orange County | — | — |
| Caliber Construction And Restoration INC | Michael Anthony Nelson | — | (562) 697 6699 | GC, remodel, ADU | Brea · Orange County | — | — |
| Caliber Construction INC | Christopher James Roy | — | (714) 403 4087 | GC, remodel, ADU | Brea · Orange County | — | — |
| Caliber Construction Services | Joseph Allen Sparks | — | (949) 254 1006 | GC, remodel, ADU | Anaheim Hills · Orange County | — | — |
| Caliber Contracting Company INC | Ian Jr Esterhuizen | — | (949) 388 5037 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| Caliber Flooring Solution INC | Richard Edward Mendez | — | (714) 441 1644 | Other | Placentia · Orange County | — | — |
| Caliber Heating & Air Conditioning INC | Aaron Bennett Hurley | — | (714) 632 8980 | HVAC | Anaheim · Orange County | — | — |
| Caliber One Stoneworks | Caliber One Stoneworks | — | (949) 887 2378 | Other | Capistrano Beach · Orange County | — | — |
| Caliber Paving Company INC | Darin Wayne Gilchriese | — | (714) 556 0484 | Other | Tustin · Orange County | — | — |
| Caliber Signs & Imaging INC | Mary Bernadette Neil | — | (949) 748 1070 | Other | Irvine · Orange County | — | — |
| Caliber Woodcraft | Caliber Woodcraft | — | (949) 300 9608 | Other | Lake Forest · Orange County | — | — |
| Calico Building Services INC | Kathy Jo Strand | — | (949) 380 8707 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Calico Landscape | Calico Landscape | — | (949) 235 5735 | Windows, patio, painters | Silverado · Orange County | — | — |
| Calida Air Conditioning & Heating | Calida Air Conditioning & Heating | — | (714) 661 8716 | HVAC | Garden Grove · Orange County | — | — |
| Calidad Construction | Ping Hsin Li | — | (714) 323 6788 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| California Auger Boring INC | Kevin George Reardon | — | (714) 632 1596 | Other | Anaheim · Orange County | — | — |
| California Awnings | California Awnings | — | (714) 603 5203 | Other | Anaheim · Orange County | — | — |
| California Barricade Rentals INC | David Finau Tangitau | — | (714) 558 8474 | Other | Santa Ana · Orange County | — | — |
| California Boiler INC | Gary Franklin Anderson | — | (714) 891 0701 | HVAC | Santa Ana · Orange County | — | — |
| California Boring INC | Jennifer Lynn Reardon | — | (714) 632 1596 | Other | Anaheim · Orange County | — | — |
| California Builders | Samuel Aiyed | — | (949) 830 8305 | GC, remodel, ADU | Laguna Beach · Orange County | — | — |
| California Builders And Design | California Builders And Design | — | (949) 292 3438 | GC, remodel, ADU | Coto De Caza · Orange County | — | — |
| California Builders Remodeling & Real Estate INC | Rodney Eugene Davis | — | (714) 580 8571 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| California Building Care INC | Richard Alan Frankel | — | (949) 678 5766 | GC, remodel, ADU | Laguna Niguel · Orange County | — | — |
| California Cabinet Co | Dean Alan Jr Grubb | — | (707) 330 5087 | Other | Huntington Beach · Orange County | — | — |
| California Ceilings & Walls LLC | Mark Edward Benjamin | — | (949) 610 2326 | Other | Lake Forest · Orange County | — | — |
| California Coast Backflows LLC | Cody Alan Gores | — | (714) 315 4759 | Other | Yorba Linda · Orange County | — | — |
| California Coast Carpet & Flooring INC | Brian Scott Biniasz | — | (949) 492 7351 | Other | San Clemente · Orange County | — | — |