| Clear Choice Plumbing & Drains | Joseph Michael Virgilio | — | (619) 576-2286 | HVAC | Ramona · San Diego County | — | — |
| Clear Coast | Clear Coast | info@southstar.com | (760) 908 7094 | Windows, patio, painters | Fallbrook · San Diego County | — | — |
| Clear Concepts Windows & Doors | Bryan Joseph King | — | (619) 583 7171 | Windows, patio, painters | San Diego · San Diego County | — | — |
| Clear Expectations INC | Michael O'shea West | — | (760) 290 3415 | Pool | San Marcos · San Diego County | — | — |
| Clear Heating And Air INC | Reuven Politi | info@clearheatingandair.com | (833) 442 5327 | HVAC | El Cajon · San Diego County | — | — |
| Clear Image Glass Services INC | Stephen James Suda | — | (619) 517 1497 | Windows, patio, painters | Spring Valley · San Diego County | — | — |
| Clear Sign & Design INC | Stephen James Weddell | adrienne@clearsigns.com | (760) 736 8111 | Electricians | San Marcos · San Diego County | — | — |
| Clear Vision Plumbing | Ali Fuat Tuncbilek | info@clearvisionplumbing.com | (619) 808 4496 | Other | Chula Vista · San Diego County | — | — |
| Clear Vision Remodelling INC | Tal Regev | tal@clearvisionremodeling.com | (858) 276 1353 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Clear Water Landscapes | Clear Water Landscapes | — | (760) 547 6713 | Windows, patio, painters | Solana Beach · San Diego County | — | — |
| Clear Wave Pool Solution | Clear Wave Pool Solution | — | (760) 828 5903 | Pool | San Marcos · San Diego County | — | — |
| Clearmax Windows & Doors INC | David Noriani | contact@clearmaxwindows.com | (858) 220 1179 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Clearview Pool Services | Leonardo Demian Gomez Hurtado | — | (619) 771 7097 | Pool | Spring Valley · San Diego County | — | — |
| Clearwater Drain Service | Seth Julian Flanery | — | (619) 248 6484 | Other | Spring Valley · San Diego County | — | — |
| Clearwater Plumbing And Drains INC | Michael Joseph Serros | — | (760) 420 6281 | Other | Oceanside · San Diego County | — | — |
| Cleavenger Masonry | Cleavenger Masonry | — | (619) 322 8187 | Other | Lakeside · San Diego County | — | — |
| Cleavenger Masonry INC | Kyle Dean Cleavenger | — | (619) 390 7997 | Other | Alpine · San Diego County | — | — |
| Clegg Con Co | Robin Gayle Clegg | — | (619) 729 9474 | GC, remodel, ADU | El Cajon · San Diego County | — | — |
| Clemens Mission Restoration | Sean Mathew Clemens | — | (619) 709 0203 | Electricians | El Cajon · San Diego County | — | — |
| Clemente Aron | Clemente Aron | — | (619) 730 9941 | Other | National City · San Diego County | — | — |
| Clements Painting | Clements Painting | — | (619) 354 5080 | Windows, patio, painters | Carlsbad · San Diego County | — | — |
| Clemlowe Services INC | Darran Joseph Clemo | — | (858) 386 6340 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Clerestory Liturgical LLC | Michael Robert Bonetto | — | (619) 206 2480 | Other | San Diego · San Diego County | — | — |
| Clermont Construction | Mathias Ludovic Clermont | — | (949) 247 9701 | GC, remodel, ADU | Vista · San Diego County | — | — |
| Cletus Technology Solutions LLC | Chapele Amre | — | (760) 801 6333 | Other | Escondido · San Diego County | — | — |
| Clever Concrete | Clever Concrete | — | (619) 634 7926 | Other | Spring Valley · San Diego County | — | — |
| Clg Construction | Christopher Lee Greene | — | (442) 341 3282 | GC, remodel, ADU | Escondido · San Diego County | — | — |
| Click On Floors Installation Services | Eric Don Conner | — | (858) 586 9663 | Other | San Diego · San Diego County | — | — |
| Clicker Garage Door Service & Sales INC | Yitzhak Yehonathan Alon | — | (858) 666 6722 | GC, remodel, ADU | Poway · San Diego County | — | — |
| Cliff Sims Masonry INC | Clifford Harrison Sims | — | (619) 997 3048 | Other | El Cajon · San Diego County | — | — |
| Climate Brothers INC | David Paul Matusiak | — | (619) 448 4822 | HVAC | Santee · San Diego County | — | — |
| Climate Heating And Air Conditioning INC | Castro Octavio | — | (760) 554 3648 | HVAC | San Diego · San Diego County | — | — |
| Climate Paradise | Serhii Smahliuk | — | (442) 236 3670 | HVAC | San Diego · San Diego County | — | — |
| Climax Construction INC | Abdulhakim Sulaiman Alkhalil | info@climax-construction.com | (619) 642 8315 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Clint Electric | Daniel Thomas Clint | — | (619) 255 3249 | Electricians | San Diego · San Diego County | — | — |
| Clique My Home | Clique My Home | — | (760) 450 7502 | Other | Carlsbad · San Diego County | — | — |
| Cln Plumbing INC | Christopher James Nichols | — | (858) 842 7911 | Other | Poway · San Diego County | — | — |
| Cloak Design Construction INC | Vu Quang Pham | — | (858) 630 1555 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Closet Factory | Elaine Rini | — | (858) 564 0560 | Other | San Diego · San Diego County | — | — |
| Clotfelter Construction INC | Kurt Owen Clotfelter | — | (858) 525 1059 | GC, remodel, ADU | Rancho Santa Fe · San Diego County | — | — |