| Circle Home Improvements And Remodels | Craig Alan Hanus | — | (949) 212 0734 | GC, remodel, ADU | Vista · San Diego County | — | — |
| Circuit Line Electric | Charles Lee Gregan | — | (858) 693 0646 | Electricians | San Diego · San Diego County | — | — |
| Ciro's Landscaping INC | Ciro Delgadillo | — | (760) 743 0648 | Windows, patio, painters | Escondido · San Diego County | — | — |
| Cirta Plumbing INC | Asli Salah | — | (727) 485 6192 | Other | Poway · San Diego County | — | — |
| Cis Drywall INC | Cesar Ivan Sahagun Mayoral | estimating@cisdrywall.com | (619) 635 1074 | Other | Tecate · San Diego County | — | — |
| Cisco Painting | Cisco Painting | — | (619) 885 2218 | Windows, patio, painters | Oceanside · San Diego County | — | — |
| Cisko's Landscaping Services | Nunez Francisco | — | (619) 513 0424 | Windows, patio, painters | San Diego · San Diego County | — | — |
| Cisneros Contracting | Miguel Angel Cisneros | — | (619) 742 8693 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Citrine Build Group | Clifford Franso | — | (619) 564 1099 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| City Electric Works Incorporated | Jeffrey Eric Godinho | info@cityelectricworks.com | (619) 269 1680 | Electricians | San Diego · San Diego County | — | — |
| City Painting | City Painting | — | (619) 721 7662 | Windows, patio, painters | San Diego · San Diego County | — | — |
| City Plumber | City Plumber | — | (619) 742 2704 | Other | San Diego · San Diego County | — | — |
| City Signs | Sydney Rosin | — | (858) 547 4600 | Other | San Diego · San Diego County | — | — |
| City View Painting INC | Antonio Gaspar Sanchez | — | (858) 880 5998 | Windows, patio, painters | San Diego · San Diego County | — | — |
| City Wide Facility Solutions Of San Diego | Jeffrey Thomas Taylor | — | (858) 505 0202 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Citymark Construction INC | Richard Vance Gustafson | — | (619) 231 1161 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Cityscapes Construction INC | Jose Jesus Morales | — | (619) 770 8511 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Cityscapes Roofing INC | Keith Stephen Haugen | keith@cityscapesroofing.com | (619) 434 7663 | Other roofers | Spring Valley · San Diego County | — | — |
| Citywide Coatings | Sain Yadala | — | (619) 771 2364 | Windows, patio, painters | Bonita · San Diego County | — | — |
| Civic Enterprises INC | Tausha Lynn Scholl | — | (760) 497 1494 | Other | Valley Center · San Diego County | — | — |
| Cj Construction | Chase Ashton Johnson | buildzoomsupport@blockrenovation.com | (760) 472 3110 | GC, remodel, ADU | Oceanside · San Diego County | — | — |
| Cj Flooring | Cj Flooring | johnsmith@hotmail.com | (951) 252 4809 | Other | Vista · San Diego County | — | — |
| Cjm Drywall INC | Jose Manuel Cervantes | — | (619) 740 1822 | Other | National City · San Diego County | — | — |
| Ck Electric Incorporated DBA Ck Electric | Gary Van Nelson | — | (760) 535 6473 | Electricians | Valley Center · San Diego County | — | — |
| Ck Spaces | Benjamin Jacob Salloum | info@ckspaces.com | (619) 488 6332 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Cl Flooring INC | Cesar J Gonzalez Armenta | — | (619) 307 6764 | Other | San Diego · San Diego County | — | — |
| Cl Mechanical | Cl Mechanical | wang@cl-mechanical.com | (951) 396 6490 | HVAC | San Ysidro · San Diego County | — | — |
| Claddagh Paving Corporation | James Jarlath Dorney | admin@claddaghpaving.com | (760) 731 6713 | Other | Fallbrook · San Diego County | — | — |
| Clairemont Home Improvement | Clairemont Home Improvement | — | (619) 992 9931 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Clairemont Plumbing Service | Marshall Joseph Le Tourneau | — | (858) 270 1397 | Other | San Diego · San Diego County | — | — |
| Clairemont Signs INC | James Brian Hahn | — | (858) 277 5057 | Other | San Diego · San Diego County | — | — |
| Clancy Constructors | Clancy Constructors | — | (619) 457 9483 | GC, remodel, ADU | Boulevard · San Diego County | — | — |
| Clancy Contracting Services INC | Craig Steven Menke | — | (619) 423 1453 | GC, remodel, ADU | Santee · San Diego County | — | — |
| Clarion Clean | Clarion Clean | — | (619) 647 7717 | Windows, patio, painters | La Mesa · San Diego County | — | — |
| Clark Builders L P | Jerry Allen Brandt | — | (858) 320 3900 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Clark Built Co | Drew Alan Clark | — | (760) 979 8028 | GC, remodel, ADU | Oceanside · San Diego County | — | — |
| Clark Pest Control | Clark Pest Control | clarkcares@clarkpest.com | (858) 201-7060 | Pest, tile roofs | San Diego · San Diego County | — | — |
| Clark Realty Builders L P | Glenn Alan Ferguson | — | (858) 320 3900 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Clark's Design Build | Clark's Design Build | — | (619) 852 3526 | GC, remodel, ADU | Escondido · San Diego County | — | — |
| Clarke Constr Co | Richard Allen Jr Clarke | — | (858) 866 6958 | GC, remodel, ADU | Fallbrook · San Diego County | — | — |