| Cornell Tile And Stone INC DBA Cornell Tile | Cardenas Fernando | — | (619) 520 3016 | Other | San Diego · San Diego County | — | — |
| Cornerstone Communities Corporation | Ure Richard Kretowicz | — | (858) 458 9700 | GC, remodel, ADU | La Jolla · San Diego County | — | — |
| Cornerstone Construction | Joseph Timothy Usher | gwebb@cornerstone-construction.com | (832) 259-2520 | GC, remodel, ADU | Bonita · San Diego County | — | — |
| Cornerstone Construx LLC | Dustin Lyle Merkey | — | (760) 644 3836 | GC, remodel, ADU | Vista · San Diego County | — | — |
| Cornerstone Contracting Services LLC | Charlie Major Snowder | — | (858) 433 9290 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Cornerstone Countertops | Cornerstone Countertops | — | (619) 942 6776 | Other | Spring Valley · San Diego County | — | — |
| Cornerstone Design & Build | Jeffrey Anthony Bender | admin@csbuild.co | (619) 851 7478 | Electricians | National City · San Diego County | — | — |
| Cornerstone Design & Remodel INC | Duane Alan Wilson | — | (619) 838 1687 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Cornerstone Designs And Building | Cornerstone Designs And Building | support@cornerstonedesigns.org | (760) 850 4411 | GC, remodel, ADU | Fallbrook · San Diego County | — | — |
| Cornerstone Fence | Cornerstone Fence | interested@domainmarket.com | (760) 703 6214 | Other | Ramona · San Diego County | — | — |
| Cornerstone Managing Partners | Tom Nolan Brooks | — | (619) 843 2434 | GC, remodel, ADU | Encinitas · San Diego County | — | — |
| Cornerstone Plumbing | Cornerstone Plumbing | — | (760) 802 6764 | Other | Escondido · San Diego County | — | — |
| Cornerstone Remodel DBA Bath Planet San Diego | Bath Planet San Diego | — | (760) 855 7917 | GC, remodel, ADU | Valley Center · San Diego County | — | — |
| Cornerstone Remodels INC | Hernandez Silvestre | — | (619) 384 9034 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Cornwell Construction & Maintenance | Trevor Chandler Cornwell | — | (619) 339 0445 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Corona Custom Tile | Corona Custom Tile | — | (619) 889 6515 | Other | San Diego · San Diego County | — | — |
| Coronado Best Turf | Steven Lynn Fleming | — | (619) 500 8873 | Windows, patio, painters | San Diego · San Diego County | — | — |
| Coronado Carpentry INC | Arthur Kenneth Nobilette | — | (619) 518 8593 | GC, remodel, ADU | Spring Valley · San Diego County | — | — |
| Coronado Concrete Services INC | Ruben Coronado | — | (619) 731 9223 | Other | San Ysidro · San Diego County | — | — |
| Coronado Construction | Sergio Steven Coronado | impallari@gmail.com | (760) 807 2165 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Coronado Construction | Sergio Steven Coronado | impallari@gmail.com | (760) 807 2165 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Coronado Construction | David Jaime Coronado | impallari@gmail.com | (619) 708 6072 | GC, remodel, ADU | Spring Valley · San Diego County | — | — |
| Coronado Doors & Windows INC | Shakeel Saifuddin Hassanali | — | (619) 851 0435 | Windows, patio, painters | Santee · San Diego County | — | — |
| Coronado Electric | Michael Joseph De Leo | — | (213) 479 9681 | Electricians | Jamul · San Diego County | — | — |
| Coronado Plumbing Repair LLC | Jeffrey Alan Frosio | wweeiihhuuaanngg@gmail.com | (619) 435 2190 | Other | Coronado · San Diego County | — | — |
| Corovan Moving & Storage Co | Palomares Ricardo Sanchez | info@corovan.com | (858) 762 8100 | Other | Poway · San Diego County | — | — |
| Corporal Building Services INC | Theresa Guzman | — | (858) 586 0060 | Other | San Diego · San Diego County | — | — |
| Corporal Construction | Robert Carl Ellam | guy@infinitydesignbuild.com | (619) 707 8785 | GC, remodel, ADU | Santee · San Diego County | — | — |
| Corporate Coatings INC | Los Santos Gustavo De | — | (619) 830 8085 | Windows, patio, painters | San Diego · San Diego County | — | — |
| Correa Painting | Correa Painting | — | (760) 594 1118 | Windows, patio, painters | Vista · San Diego County | — | — |
| Correct Carpet And Draperies | James Joseph Spann | — | (760) 741 4047 | Other | Escondido · San Diego County | — | — |
| Correia Electric INC | Jason Matthew Correia | — | (619) 293 0281 | Electricians | San Diego · San Diego County | — | — |
| Correia Lopes Electric | Lopes Christian Correia | — | (619) 451 0050 | Electricians | Oceanside · San Diego County | — | — |
| Cortes Framing Inc. | Horacio Antonio Vasquez Cortes | — | (760) 715 1347 | Other | Escondido · San Diego County | — | — |
| Cortes Masonry Construction | Manuel Alejandro Cortes De Jesus | — | (760) 415 7709 | Other | Vista · San Diego County | — | — |
| Cortes Professional Roofing INC DBA Cpr Roofing | Jorge Cortes-Garibay | buildzoomsupport@blockrenovation.com | (619) 608 8900 | Other roofers | National City · San Diego County | — | — |
| Cortese Enterprises | Mark David Cortese | — | (760) 207 5296 | Windows, patio, painters | San Marcos · San Diego County | — | — |
| Cortez And Associates LLC | Kenneth Michael Sr Cortez | — | (619) 467 7562 | GC, remodel, ADU | La Mesa · San Diego County | — | — |
| Cortez Construction | Cortez-rayo Ernesto | guy@infinitydesignbuild.com | (760) 450 6456 | GC, remodel, ADU | Oceanside · San Diego County | — | — |
| Cortez Tree Care INC | Cortez-cespedes Ernesto | corteztreecare@yahoo.com | (858) 367 0842 | Tree | Vista · San Diego County | — | — |