| Carat Construction | Tong Edmond | — | (415) 823 5389 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Carleton R D Plumbing | Carleton R D Plumbing | — | (415) 596 6283 | Other | San Francisco · San Francisco County | — | — |
| Carlos Lima | Carlos Lima | kontakt@carlos-lima.com | (415) 516 2525 | Other | San Francisco · San Francisco County | — | — |
| Carmel Construction West LLC | Duane William Carlson | — | (415) 273 2900 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Carney's Plastering | Carney's Plastering | — | (415) 240 9402 | Other | San Francisco · San Francisco County | — | — |
| Carnhill Construction | Brian Gerard Divin | — | (415) 683 9635 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Carolina Construction Company | Thomas Alexander Nowell | — | (415) 302 4197 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Carpet Contractors INC | Demetri Nicholas Botaitis | — | (415) 933 9999 | Other | San Francisco · San Francisco County | — | — |
| Carson Construction | Carson Vi Hua | — | (415) 412 0978 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Casartelli Construction | Mark James Casartelli | — | (415) 250 6314 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Casement Construction INC | Francis Hugh Casement | — | (415) 819 7938 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Castle Company | Marco Tulio Castillo Guardado | — | (415) 812 1018 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Castle Construction | Ka Fu Fan | — | (415) 368 5782 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Castle One Corp DBA Castle Floors | Velasco Carlos Duran | — | (415) 401 8031 | Other | San Francisco · San Francisco County | — | — |
| Caymen Construction Corp | Wilson Ruo Bai Wu | — | (415) 244 1433 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Cazadoro Construction | Bryan Dean Holm | — | (415) 466 6093 | Other | San Francisco · San Francisco County | — | — |
| Cbf INC | John Matthew Jr Walsh | — | (415) 495 3085 | Electricians | San Francisco · San Francisco County | — | — |
| Cbs Smart Construction INC | Ken Gee | — | (415) 282 1888 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Cc Tree Design LLC | Christopher Alan Campbell | — | (415) 239 6100 | Other | San Francisco · San Francisco County | — | — |
| Ccesf | Derrick L Cooper | — | (510) 415 3654 | Other | San Francisco · San Francisco County | — | — |
| Ccf Construction LLC | Charles Chan Flader | — | (415) 740 6123 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Ccm Finish Carpentry & Construction | Russell Peterson Valby | — | (415) 948 4039 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Ccsf Design Build | Ccsf Design Build | — | (415) 793 8181 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Cd Remodeling INC | Chaz Ari Kussoy | — | (415) 275 1193 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Cdim Engineering INC | Scott Alastair Bourne | — | (415) 498 0535 | Other | San Francisco · San Francisco County | — | — |
| Cdr Construction Group INC | Dougherty Colm | — | (415) 261 2093 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Ce Hower Painting INC | Cris Eric Hower | — | (415) 205 4783 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| Celso's Plumbing | Celso's Plumbing | — | (415) 240 2024 | Other | San Francisco · San Francisco County | — | — |
| Celso's Plumbing A Partnership | Angel Marino Moran | — | (415) 240 2024 | Other | San Francisco · San Francisco County | — | — |
| Celtic Glass INC | John Casimer Mitchell | info@celtic-glass.com | (415) 468 0980 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| Celtic Painting & Restoration | Celtic Painting & Restoration | — | (415) 756 9423 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| Celtic Scaffolding INC | Noel Boggins | — | (415) 412 5964 | Other | San Francisco · San Francisco County | — | — |
| Centoni Restoration And Development INC | Gina Maria Centoni | — | (415) 606 6176 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Central City Glass INC | Rastehgar Mansour | info@centralcityglass.com | (415) 543 6441 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| Central Convalescent Homes INC | Irene Mary Lieberman | — | (415) 929 3197 | Electricians | San Francisco · San Francisco County | — | — |
| Central Mechanical Co | Jerry Ying-chau Cheng | — | (415) 290 0502 | HVAC | San Francisco · San Francisco County | — | — |
| Century Electric Const Co | Christopher Michael Buhler | — | (415) 861 6522 | Electricians | San Francisco · San Francisco County | — | — |
| Cervantes Fine Painting | Cervantes Fine Painting | — | (415) 368 2852 | Windows, patio, painters | San Francisco · San Francisco County | — | — |
| Cfy Construction Inc. | Cfy Construction Inc. | — | (650) 488-0221 | Other roofers | Daly City · San Francisco County | — | — |
| Cgl Engineering Builders LLC | Tapiwa Lionnel Chirairo | — | (415) 624 7470 | Other | San Francisco · San Francisco County | — | — |