| Campos Fire Protection | Campos Fire Protection | — | (619) 208 0538 | Other | San Diego · San Diego County | — | — |
| Campos Roofing Company INC | Baldemar Ignacio Campos | camposroofingca@yahoo.com | (619) 464 7057 | Other roofers | Spring Valley · San Diego County | — | — |
| Camson Construction LLC | Brandon Matthew Camilli | — | (505) 450 4477 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Can Do Electric INC | Robert Merle Cantrell | — | (619) 401 1920 | Electricians | Santee · San Diego County | — | — |
| Canady Construction | Jacob Donovan Canady | jacob@canadyconstruction.com | (760) 688 6678 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| Canales Concrete | Canales Concrete | dave@lab6.com | (760) 473 2718 | Other | San Marcos · San Diego County | — | — |
| Canales Demo | Joe Gilbert Jr Canales | — | (619) 204 2422 | GC, remodel, ADU | Spring Valley · San Diego County | — | — |
| Candee Customs DBA Candee Electric | Kyle Park Candee | — | (858) 422 6333 | Electricians | San Diego · San Diego County | — | — |
| Canfield Painting | Canfield Painting | — | (858) 278 9812 | Windows, patio, painters | San Diego · San Diego County | — | — |
| Canin Coatings INC | David Stephen Canin | ben@canincoatings.com | (619) 985 4175 | Windows, patio, painters | San Diego · San Diego County | — | — |
| Cannon Coastal Construction | Nathan Andrew Cannon | will@cannoncoastal.com | (760) 421 9801 | GC, remodel, ADU | Vista · San Diego County | — | — |
| Cannon Construction | Michael Sean Cannon | — | (619) 387 6122 | GC, remodel, ADU | El Cajon · San Diego County | — | — |
| Cannonball Pool Service | Francis Xavier Jr Harrington | — | (858) 254 2965 | Pool | Spring Valley · San Diego County | — | — |
| Cannonball Pools | Ronald Ian Beitz | — | (619) 850 7665 | Pool | El Cajon · San Diego County | — | — |
| Cano Air Conditioning & Heating INC | Ignacio Javier Cano | — | (619) 733 0152 | HVAC | El Cajon · San Diego County | — | — |
| Cano Electric | Cano Hector | 7hecano@gmail.com | (619) 203 0685 | Electricians | Chula Vista · San Diego County | — | — |
| Cano Ironworks | Cano Ironworks | — | (619) 203 1559 | Other | Imperial Beach · San Diego County | — | — |
| Canonica Concrete | Canonica Concrete | — | (760) 468 5453 | Other | Fallbrook · San Diego County | — | — |
| Cantamar Construction Of San Diego INC | Richard Edward Iii Nichols | — | (619) 466 4514 | GC, remodel, ADU | La Mesa · San Diego County | — | — |
| Cantarini Tractor INC | Michael Joseph Cantarini | — | (760) 497 3996 | Other | Fallbrook · San Diego County | — | — |
| Cantera Stone And Design | Cantera Stone And Design | — | (760) 583 0774 | Other | Oceanside · San Diego County | — | — |
| Canvas Concepts INC | Robert Adam Mac Kenzie | — | (619) 424 3428 | Other | Chula Vista · San Diego County | — | — |
| Canyon Fence | Canyon Fence | — | (619) 401 2263 | Other | Julian · San Diego County | — | — |
| Canyon Wireless | Canyon Wireless | interested@domainmarket.com | (619) 698 7565 | Other | Ramona · San Diego County | — | — |
| Cap West Electric | Michael Avery Capitani | capwestelectric@yahoo.com | (619) 602 2061 | Electricians | San Diego · San Diego County | — | — |
| Capaci Enterprises INC | Levi Nick Capaci | — | (949) 945 8362 | GC, remodel, ADU | Encinitas · San Diego County | — | — |
| Capacity Construction INC | James Rios | — | (858) 569 0351 | Other | San Diego · San Diego County | — | — |
| Capcon | Reynato Zafra Capistrano | — | (858) 699 9746 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Capella Construction LLC | Bradford Gregory Reller | hello@capella-construction.com | (858) 378 6295 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| Capito Contracting | Michael Glenn Capito | — | (619) 581 9059 | Other | Chula Vista · San Diego County | — | — |
| Capo Building Company | Pete Herrera | guy@infinitydesignbuild.com | (949) 973 6485 | GC, remodel, ADU | Oceanside · San Diego County | — | — |
| Caporale Custom Woodworks | Caporale Custom Woodworks | — | (619) 726 8892 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| Capps Construction | Devin Ross Capps | saltwaterbuilder@gmail.com | (805) 400 9559 | GC, remodel, ADU | Del Mar · San Diego County | — | — |
| Capri Water Damage Remediation | Jesus Ricardo Jr Lozoya | — | (619) 273 4693 | Restoration | Chula Vista · San Diego County | — | — |
| Capstone Builders | Capstone Builders | interested@domainmarket.com | (858) 740 6250 | GC, remodel, ADU | Julian · San Diego County | — | — |
| Capstone Concrete | Timothy Allen Lindberg | info@capstoneconcrete.com | (858) 722 9020 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Capstone Construction Company LLC | Darrell Lee Havins | — | (760) 505 1531 | Other | Escondido · San Diego County | — | — |
| Capstone Pool And Spa Remodeling INC | John Paul Chastang | — | (619) 390 1198 | Pool | Lakeside · San Diego County | — | — |
| Captain Cable | Captain Cable | — | (619) 941 9023 | Other | San Ysidro · San Diego County | — | — |
| Captain Decks | Mor Richter Levinson | — | (619) 629 2442 | Windows, patio, painters | Vista · San Diego County | — | — |