| California Luxury Home Remodeling INC | Wayne Kin Chang | — | (714) 234 5308 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| California Marble P And R INC | Bryan Ray Mataya | — | (800) 421 3152 | Other | Anaheim · Orange County | — | — |
| California Mechanical Solutions | California Mechanical Solutions | — | (714) 966 3088 | HVAC | Santa Ana · Orange County | — | — |
| California Metro Painting INC | Ki Hwan Oh | — | (909) 945 7071 | Windows, patio, painters | Garden Grove · Orange County | — | — |
| California Outdoor Living | Villanueva Mendoza Omero | — | (949) 800 5063 | Windows, patio, painters | Anaheim · Orange County | — | — |
| California Pacific Building Services | Jonathan Charles Bolourchi | — | (949) 701 9997 | GC, remodel, ADU | Irvine · Orange County | — | — |
| California Pacific Homes INC | Jason Michael Garcia | — | (949) 833 6055 | GC, remodel, ADU | Irvine · Orange County | — | — |
| California Painting & Finishes | California Painting & Finishes | — | (949) 903 5337 | Windows, patio, painters | Costa Mesa · Orange County | — | — |
| California Pools Of Orange County (north) | California Pools Of Orange County (north) | — | (714) 886-6006 | Pool | Irvine · Orange County | — | — |
| California Pools Of Orange County (south) | California Pools Of Orange County (south) | — | (949) 313-8939 | Pool | San Clemente · Orange County | — | — |
| California Premier Builders LLC DBA Premier Restoration | Bogdan Lucescu | — | (714) 869 3173 | GC, remodel, ADU | Fullerton · Orange County | — | — |
| California Property Maintenance | California Property Maintenance | — | (949) 412 7959 | GC, remodel, ADU | Mission Viejo · Orange County | — | — |
| California Property Restoration INC | Jerry Lee Pressnell | — | (949) 492 0137 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| California Property Standards | California Property Standards | — | (949) 278 4343 | GC, remodel, ADU | Costa Mesa · Orange County | — | — |
| California Rainforest Gardens | California Rainforest Gardens | — | (714) 862 0405 | Windows, patio, painters | Santa Ana · Orange County | — | — |
| California Reliable Fire Services | Yousefi Kambiz | — | (949) 939 7504 | Other | Irvine · Orange County | — | — |
| California Rooter & Plumbing INC | Mark Douglas Fowler | — | (949) 222 2202 | Other | Santa Ana · Orange County | — | — |
| California Shade | Paulo Daniel Vilardi | — | (949) 630 8632 | Other | Westminster · Orange County | — | — |
| California Signature Kitchen Bath & Flooring INC | Ghaffar Khalaj Hedayati | — | (800) 590 7410 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| California Slurry Seal | Dixie Rosemary Martin | — | (714) 441 0513 | Other | La Habra · Orange County | — | — |
| California Smart Systems | Tyler Adam Worthington | — | (661) 492 2388 | GC, remodel, ADU | Orange · Orange County | — | — |
| California Smartscape - Pacific Paradise Pools | Jonathan David Shapiro | — | (949) 858 0686 | GC, remodel, ADU | Orange · Orange County | — | — |
| California Smartscape Pacific Paradise Pools | Jonathan David Shapiro | — | (714) 737 7665 | GC, remodel, ADU | Orange · Orange County | — | — |
| California Square Foot Flooring INC | Sotelo Freddy | — | (714) 467 0774 | Other | Garden Grove · Orange County | — | — |
| California Tile | Jose Luis Garcilazo Hernandez | — | (714) 574 8769 | GC, remodel, ADU | Garden Grove · Orange County | — | — |
| California Tile & Stone | California Tile & Stone | — | (714) 894 3952 | Other | Garden Grove · Orange County | — | — |
| California Tint Crew LLC | Bradley Fuentes | — | (714) 345 9846 | Other | Orange · Orange County | — | — |
| California Tree & Landscape | California Tree & Landscape | — | (559) 478-4133 | Tree | Fresno · Orange County | — | — |
| California Waters | Mark Henry Pitman | — | (949) 528 0900 | Pool | Yorba Linda · Orange County | — | — |
| California Window Masters | California Window Masters | — | (714) 878-0839 | Windows, patio, painters | Santa Ana · Orange County | — | — |
| California Windows | Jeffery Todd Conkle | — | (714) 434 8650 | GC, remodel, ADU | Costa Mesa · Orange County | — | — |
| California Wood Designs | California Wood Designs | — | (714) 891 2250 | Other | Huntington Beach · Orange County | — | — |
| Calilfornia Home Remodeling & Construction Corporation | Malong Li | — | (925) 490 6189 | GC, remodel, ADU | Yorba Linda · Orange County | — | — |
| Calimingo Pools INC | Jesus Adolpho| Escalera Jesse Adolpho Escalera | — | (714) 235 3294 | GC, remodel, ADU | Newport Beach · Orange County | — | — |
| Calis Enterprises | Calistro Carbajal Rosales | — | (714) 656 7112 | Other | Garden Grove · Orange County | — | — |
| Caliscapes O C | Victor Alfonso Gonzalez Juarez | — | (714) 348 4808 | Windows, patio, painters | Orange · Orange County | — | — |
| Calivolts INC | Huzaifa Alfakhouri | info@clivolts.com | (949) 560 4783 | Electricians | Costa Mesa · Orange County | — | — |
| Calizto Plumbing INC | Calixto Flores-Cortes | — | (949) 391 8336 | Other | Costa Mesa · Orange County | — | — |
| Callahan Custom Masonry | Callahan Custom Masonry | — | (949) 457 8084 | Other | Mission Viejo · Orange County | — | — |
| Callegend Homes INC | Yaoqin Hsu Wei | — | (909) 688 8888 | GC, remodel, ADU | Irvine · Orange County | — | — |