| Coastline Flooring INC | Jose Raul Michimani | — | (760) 458 2707 | Other | Oceanside · San Diego County | — | — |
| Coastline General Construction INC | Victor Hugo Ojeda | — | (619) 922 1040 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Coastline Hauling & Clean Up | Coastline Hauling & Clean Up | — | (858) 265 8680 | Other | El Cajon · San Diego County | — | — |
| Coastline HVAC | Coastline HVAC | coastlineheat.ac@gmail.com | (949) 533 8954 | HVAC | Carlsbad · San Diego County | — | — |
| Coastline Painting & Decorating | Coastline Painting & Decorating | — | (619) 577 8556 | Windows, patio, painters | San Diego · San Diego County | — | — |
| Coastline Steel | Tyler Moller Poppert | — | (619) 473 8626 | Other | Alpine · San Diego County | — | — |
| Coastpro Builders INC | Eric Iglesias | guy@infinitydesignbuild.com | (760) 525 4575 | GC, remodel, ADU | Vista · San Diego County | — | — |
| Coastwood Construction INC | Jeffrey Ronald Piva | — | (310) 595 6799 | GC, remodel, ADU | Bonsall · San Diego County | — | — |
| Coat Design Remodel | Amber Leigh Arendsen | — | (760) 750 1956 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| Coatbycoat Lath & Plastering | Jose Martin Sanchez-Guerrero | — | (619) 788 3953 | Other | La Mesa · San Diego County | — | — |
| Coatings Unlimited | Martha Juarez | — | (619) 322 5182 | Windows, patio, painters | Spring Valley · San Diego County | — | — |
| Cobalt Construction S D INC | Ivan Dale Berry | — | (760) 480 7525 | Electricians | Escondido · San Diego County | — | — |
| Cobb Cooling Heating And Air | Cobb Cooling Heating And Air | mn@tritonair.net | (760) 405 4926 | HVAC | Escondido · San Diego County | — | — |
| Cobech Traffic | Colleen Annette Bechtel | — | (619) 239 4900 | Other | San Diego · San Diego County | — | — |
| Coble Enterprises | Michael Wayne Jr Coble | — | (760) 604 2669 | GC, remodel, ADU | Ramona · San Diego County | — | — |
| Coble Homes | Coble Homes | — | (619) 227 9858 | GC, remodel, ADU | Ramona · San Diego County | — | — |
| Coble Homes INC | Matthew Ryan Coble | — | (619) 993 7910 | GC, remodel, ADU | Ramona · San Diego County | — | — |
| Cobrda Construction INC | Michael Cobrda | — | (858) 756 4312 | GC, remodel, ADU | Rancho Santa Fe · San Diego County | — | — |
| Coburn Construction | Richard Ingalls Coburn | — | (858) 382 0593 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Coco Paving | Coco Paving | office@coco-paving.com | (619) 944 8718 | Other | San Diego · San Diego County | — | — |
| Coco's Brush | Coco's Brush | — | (760) 525 2599 | Windows, patio, painters | Oceanside · San Diego County | — | — |
| Cocreators INC DBA Cocreation Prefabricated Playgrounds | David Paul Christensen | — | (805) 846 8122 | Other | Vista · San Diego County | — | — |
| Coddington Lock And Security Corporation | Matthew Ernest Coddington | — | (619) 499 5571 | Alarm and generators | El Cajon · San Diego County | — | — |
| Code 3 Contracting | Michael Patrick Murphy | — | (619) 672 0145 | Electricians | Lakeside · San Diego County | — | — |
| Coder Construction | Matthew Jonathan Coder | nikala@coderconstruction.com | (619) 770 9408 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Codiamat Hardwood Floors | Codiamat Hardwood Floors | — | (619) 654 4708 | Other | La Mesa · San Diego County | — | — |
| Cody Musick | Cody Musick | — | (619) 805 5003 | GC, remodel, ADU | Julian · San Diego County | — | — |
| Coe Crew Pools LLC | Joseph Patrick Coe | coecrewpools@gmail.com | (760) 500 3844 | Pool | Oceanside · San Diego County | — | — |
| Coelho INC DBA Coelho Contracting | Michael Eugene Jr Powers | info@coelhocontracting.com | (443) 624 4187 | GC, remodel, ADU | Santee · San Diego County | — | — |
| Coffey Construction LLC | Luke Joseph Coffey | info@coffeygroup.com | (805) 448 5413 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Coffman Specialties INC | Colleen Theresa Coffman | — | (858) 536 3100 | Electricians | San Diego · San Diego County | — | — |
| Cogent Builders | David Samuel Mandel | david@cogentbuilders.com | (760) 492 2822 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Cohen Security | Matthew Ross Johnson | — | (858) 522 9622 | Alarm and generators | La Jolla · San Diego County | — | — |
| Coii Electric | Charles Robert Ii Ortiz | — | (909) 831 7452 | Electricians | Spring Valley · San Diego County | — | — |
| Colbear Contracting Group LLC | Trevor Daniel Colbert | — | (858) 736 1770 | GC, remodel, ADU | Solana Beach · San Diego County | — | — |
| Cold Rock Refrigeration INC | Gallo Jesse | coldrockservices@gmail.com | (619) 635 1600 | HVAC | Lakeside · San Diego County | — | — |
| Coldwell Floors INC | Benjamin David Leyva | — | (619) 632 3551 | Other | Chula Vista · San Diego County | — | — |
| Coleman Construction | Willie Lee Coleman | linuxlamp@ocmail.com | (619) 655 6030 | GC, remodel, ADU | El Cajon · San Diego County | — | — |
| Coleman Construction Co | Robert William Coleman | linuxlamp@ocmail.com | (619) 855 6365 | GC, remodel, ADU | Escondido · San Diego County | — | — |
| Coleman Construction Company | Coleman Carlos | ccolemansd@gmail.com | (619) 218 9825 | GC, remodel, ADU | San Diego · San Diego County | — | — |