| Crown Signs | Jose Guadalupe Lizaola | — | (619) 259 1416 | Other | San Diego · San Diego County | — | — |
| Crown Steel Mfg | Gwendoline Joyce Carr | — | (760) 471 1188 | Other | San Marcos · San Diego County | — | — |
| Crown Structurals | Crown Structurals | aqremodeling2@gmail.com | (619) 845 5400 | GC, remodel, ADU | Imperial Beach · San Diego County | — | — |
| Crowning Touch Installations INC | Brennen Michael Tyner | — | (760) 224 1881 | Other | Oceanside · San Diego County | — | — |
| Crownstruction INC | Ben Chai Elhar | crownstructionus@gmail.com | (631) 702 5179 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Crp Builder INC | Ghullam Reza Khavari | c.r.partnership22@gmail.com | (619) 343 4049 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Crs Adu Builders INC | Alona Sharabi | — | (858) 788 3839 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Crs Builders INC | Alona Sharabi | — | (858) 790 8781 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Crs Construction | Christopher Ryan Sheard | joseph@crs-construction.com | (714) 486-2472 | GC, remodel, ADU | Santee · San Diego County | — | — |
| Crs Drain And Plumbing | Crs Drain And Plumbing | — | (619) 751 7315 | Other | Spring Valley · San Diego County | — | — |
| Crs Group INC | Bautista David | — | (619) 280 8080 | Electricians | San Diego · San Diego County | — | — |
| Crull Excavating And Grading | Crull Excavating And Grading | — | (760) 497 7876 | Other | Vista · San Diego County | — | — |
| Crux Landscape INC | Cruz Leonardo | — | (760) 420 1426 | Windows, patio, painters | Vista · San Diego County | — | — |
| Cruz Building Services | Cruz Vasquez Rene | — | (760) 445 9060 | GC, remodel, ADU | Valley Center · San Diego County | — | — |
| Cruz Comfort Heating & Air INC | Eduardo Elias Cruz | — | (760) 896 5031 | HVAC | Ramona · San Diego County | — | — |
| Cruz Construction And Development INC | Richard Alberto Cruz | — | (858) 652 0770 | GC, remodel, ADU | Escondido · San Diego County | — | — |
| Cruz Custom Construction INC DBA Cruz Construction | Cruz Fernando | — | (858) 717 1032 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Cruz Custom Homes INC | Ryan Trent Firestine | — | (619) 992 4897 | GC, remodel, ADU | Escondido · San Diego County | — | — |
| Cruz Fencing | Cruz Fencing | — | (619) 597 0259 | Other | Potrero · San Diego County | — | — |
| Cruz Heating And Air | Cruz Heating And Air | — | (858) 252-4579 | HVAC | San Diego · San Diego County | — | — |
| Cruz Painting | Cruz Painting | — | (760) 575 2882 | Windows, patio, painters | Vista · San Diego County | — | — |
| Crystal Chem Pools | Crystal Chem Pools | — | (818) 599 7917 | Pool | Escondido · San Diego County | — | — |
| Crystal Clear Pools Service | Dallas John Jr Labor | — | (858) 337 2044 | Pool | San Diego · San Diego County | — | — |
| Crystal Vista Pool Tech INC | Carlos Alberto Mondragon Padilla | crystalvistapool@gmail.com | (619) 245 9977 | Pool | El Cajon · San Diego County | — | — |
| Csa LLC | Stephen Christopher Ablahad | — | (619) 654 4940 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Csg Visual Communication INC | Mona Lisa Khoury | — | (858) 586 6050 | Other | San Diego · San Diego County | — | — |
| Csi Flooring | Pablo Flores-Olivares | — | (858) 583 3543 | Other | Chula Vista · San Diego County | — | — |
| Csi/cja A Joint Venture | & Associates INC Condon-Johnson | — | (858) 536 3100 | Other | San Diego · San Diego County | — | — |
| Csj R & D INC | Sergio H Gomez | — | (619) 862 4652 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Csl Quality Construction INC | Candelario Ordaz | info@cslqualityconstruction.com | (619) 335 6258 | GC, remodel, ADU | Spring Valley · San Diego County | — | — |
| Csld Construction INC | Carlos I Hurtado Orozco | guy@infinitydesignbuild.com | (760) 560 7956 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Ct Concrete INC | Cabrera Rafael | — | (760) 822 8611 | Other | Valley Center · San Diego County | — | — |
| Cte INC | David Mark Koeberle | — | (619) 733 6792 | Electricians | El Cajon · San Diego County | — | — |
| Ctfd Construction INC | Lorenzo Alfredo Trujillo | — | (858) 357 3197 | GC, remodel, ADU | Alpine · San Diego County | — | — |
| Ctm Tile & Marble INC | Jeffrey Leon Reid | — | (619) 654 0485 | Other | El Cajon · San Diego County | — | — |
| Ctr Water INC DBA Ctr Water Plumbing | Mamadou Aliou Diallo | — | (820) 666 3575 | Other | San Diego · San Diego County | — | — |
| Cuadros Concrete INC | Diego Alejandro Cuadros | — | (619) 451 1005 | Other | Chula Vista · San Diego County | — | — |
| Cuervitos General Construction | Juan Miguel Virgen-martinez | — | (619) 635 1270 | GC, remodel, ADU | El Cajon · San Diego County | — | — |
| Cultivate Construction | Morgan Samantha D'cruz | guy@infinitydesignbuild.com | (619) 820 4462 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Cultura | Randall Lynn Benge | — | (858) 755 1390 | GC, remodel, ADU | San Diego · San Diego County | — | — |