| Crafting Metal Works INC | Antonio Rigoberto Torres Hernandez | info@craftingmetalworks.com | (650) 861 1651 | Other | Redwood City · San Mateo County | — | — |
| Craftsman Landscapes | Craftsman Landscapes | — | (650) 465 8674 | Windows, patio, painters | Redwood City · San Mateo County | — | — |
| Craftworks Holdings INC | Steven Robert Bonbright | — | (650) 312 9196 | Windows, patio, painters | San Mateo · San Mateo County | — | — |
| Craftworks Painters | Craftworks Painters | — | (650) 600-0709 | Windows, patio, painters | San Mateo · San Mateo County | — | — |
| Craftworks Painters Of Southern California | Steven Robert Bonbright | — | (650) 312 9196 | Windows, patio, painters | San Mateo · San Mateo County | — | — |
| Craftworks Painters Of The Bay Area | Steven Robert Bonbright | — | (650) 312 9196 | Windows, patio, painters | San Mateo · San Mateo County | — | — |
| Craig's Painting | Craig's Painting | — | (650) 553 9653 | Windows, patio, painters | So San Francisco · San Mateo County | — | — |
| Crana Plastering + Stucco | Crana Plastering + Stucco | — | (415) 599 9752 | Other | South San Francisco · San Mateo County | — | — |
| Crawford Construction 101 | Walter Deroyce Crawford | — | (510) 695 8074 | GC, remodel, ADU | San Carlos · San Mateo County | — | — |
| Crb Construction | Chase Randall Berend | — | (650) 291 8039 | GC, remodel, ADU | Pacifica · San Mateo County | — | — |
| Creag Construction LLC | Craig William Forbes | impallari@gmail.com | (650) 504 6408 | GC, remodel, ADU | El Granada · San Mateo County | — | — |
| Create Mix And Mingle | Create Mix And Mingle | — | (650) 434-2781 | Windows, patio, painters | San Mateo · San Mateo County | — | — |
| Creative Concrete Sf INC | Fernando Coronado | — | (650) 290 3486 | Other | South San Francisco · San Mateo County | — | — |
| Creative Energy | Creative Energy | info@creativeenergy.com | (650) 574-7600 | Pool | San Mateo · San Mateo County | — | — |
| Creative Garden & Design | Creative Garden & Design | — | (650) 921 2785 | Windows, patio, painters | Burlingame · San Mateo County | — | — |
| Creative Gates INC | Isela Moreno | — | (650) 365 4283 | Other | Redwood City · San Mateo County | — | — |
| Creative Paint | Tim Charles Bennett | — | (650) 862 9694 | Windows, patio, painters | San Carlos · San Mateo County | — | — |
| Creative Plumbing | Creative Plumbing | — | (650) 799 0236 | Other | Menlo Park · San Mateo County | — | — |
| Creggan Construction INC | Kristopher Bradley | cregganconstruction@outlook.com | (415) 670 0456 | GC, remodel, ADU | Pacifica · San Mateo County | — | — |
| Crestview Builders INC | Jose Antonio Gonzalez | — | (650) 454 7589 | GC, remodel, ADU | Menlo Park · San Mateo County | — | — |
| Cristofaro LLC | Justin Michael Cristofaro | — | (514) 880 1236 | Other | Menlo Park · San Mateo County | — | — |
| Cross Construction | Louis Glenn Cross | — | (530) 318 0615 | GC, remodel, ADU | Half Moon Bay · San Mateo County | — | — |
| Crossman Construction | Wallace Daniel Crossman | — | (650) 288 7668 | GC, remodel, ADU | Daly City · San Mateo County | — | — |
| Crown Industrial Engineering | Lois Beverly Morgan | — | (650) 952 5150 | Other | South San Francisco · San Mateo County | — | — |
| Crown Sheet Metal & Skylights INC | Donald Edward Dennehy | — | (650) 490 9140 | GC, remodel, ADU | Burlingame · San Mateo County | — | — |
| Cruz HVAC | Cruz HVAC | — | (408) 757 7551 | HVAC | Redwood City · San Mateo County | — | — |
| Crystal Springs Plumbing LLC | Adam Richard Williams | info@crystalspringsplumbing.com | (650) 285 1862 | Other | South San Francisco · San Mateo County | — | — |
| Crystal Towers Associates | Steven Allan Runchey | — | (650) 572 9392 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| Csc Builders INC | Cesar Sanchez-Contreras | — | (650) 823 1259 | GC, remodel, ADU | El Granada · San Mateo County | — | — |
| Csq INC | Jeff Tszwai Chow | — | (415) 620 8888 | GC, remodel, ADU | South San Francisco · San Mateo County | — | — |
| Csv Builders INC | Contreras Cesar Sanchez | — | (650) 740 4921 | GC, remodel, ADU | Half Moon Bay · San Mateo County | — | — |
| Ctc Construction LLC | George Edward Jr Wilkie | — | (650) 218 5791 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| Cuevas Steel Systems | Cuevas Steel Systems | — | (415) 340 2201 | Other | San Mateo · San Mateo County | — | — |
| Culligan Management Company INC | Thomas Joseph Iii Culligan | — | (650) 573 1500 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| Cullyvore Construction | Robert George Bloomer | — | (650) 703 8630 | GC, remodel, ADU | Montara · San Mateo County | — | — |
| Curated Network Solutions | Kenneth Lee Barnard | — | (650) 460 7555 | Other | Woodside · San Mateo County | — | — |
| Curran Electrical | David Joseph Curran | — | (415) 516 5413 | Electricians | South San Francisco · San Mateo County | — | — |
| Curtis Edward Dennison Landscape INC | Curtis Edward Dennison | — | (650) 731 4668 | Windows, patio, painters | South San Francisco · San Mateo County | — | — |
| Curtis Electrical Co | Curtis Park Leung | — | (415) 308 9987 | Electricians | Millbrae · San Mateo County | — | — |
| Custom Cabinet Refacing | Custom Cabinet Refacing | — | (650) 440 0508 | Other | Half Moon Bay · San Mateo County | — | — |