| Chris Long General Contractor | Chris Long General Contractor | — | (408) 590 7616 | GC, remodel, ADU | Redwood City · San Mateo County | — | — |
| Chris Rohlfes Construction INC DBA C P R Construction | Suzanne Barbara Rohlfes | — | (650) 743 7024 | GC, remodel, ADU | Redwood City · San Mateo County | — | — |
| Chris' Marble Granite Countertops | Chris' Marble Granite Countertops | — | (650) 474 1066 | Other | South San Francisco · San Mateo County | — | — |
| Chriselia | Christian Giovanni Vasquez | — | (201) 647 5584 | Electricians | San Carlos · San Mateo County | — | — |
| Christian Olazar | Christian Olazar | — | (650) 619 3247 | GC, remodel, ADU | Belmont · San Mateo County | — | — |
| Christopher & Sons Belmont Roof Repair | Christopher & Sons Belmont Roof Repair | — | (650) 668-5677 | Other roofers | Belmont · San Mateo County | — | — |
| Christopher Alan Polizzi | Christopher Alan Polizzi | — | (650) 455 9148 | Electricians | Burlingame · San Mateo County | — | — |
| Christopher Arana | Christopher Arana | — | (415) 656 0129 | GC, remodel, ADU | Daly City · San Mateo County | — | — |
| Christopher Conner Construction | Christopher David Conner | — | (650) 879 1838 | GC, remodel, ADU | Loma Mar · San Mateo County | — | — |
| Christopher Goodwin | Christopher Goodwin | — | (650) 821 5975 | Other | San Bruno · San Mateo County | — | — |
| Christopher Homeworks | Christopher Homeworks | — | (650) 366 4205 | GC, remodel, ADU | Redwood City · San Mateo County | — | — |
| Christopher J Fenech General Contractor | Christopher J Fenech General Contractor | — | (650) 356 0321 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| Christopher Wells Construction INC | Christopher Jay Wells | — | (415) 656 1220 | GC, remodel, ADU | Brisbane · San Mateo County | — | — |
| Cht Electric LLC | Seong Chi Lo | — | (650) 784 5317 | Electricians | South San Francisco · San Mateo County | — | — |
| Chuck P Carmona | Chuck P Carmona | — | (650) 743 6699 | GC, remodel, ADU | Redwood City · San Mateo County | — | — |
| Churape Samano Construction INC | Samano William Churape | — | (650) 863 1334 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| Ciaran Crossan | Ciaran Crossan | — | (415) 559 0607 | Other | South San Francisco · San Mateo County | — | — |
| Ciaran Horgan Construction | Ciaran Patrick Horgan | — | (660) 222 4471 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| Cielo Legacy Corporation DBA Miracle Method Of San Francisco | Jaime Daniel Munoz | — | (415) 673 4211 | Other | Brisbane · San Mateo County | — | — |
| Cienega General Contractor INC | Sanchez Lucio Flores | cienegageneralcontractor@gmail.com | (650) 346 8373 | GC, remodel, ADU | Redwood City · San Mateo County | — | — |
| Cindy's Excavation | Cynthia Jenny Giovannoni | — | (650) 726 3588 | Other | Half Moon Bay · San Mateo County | — | — |
| Circlefoot | Diego J Torrelio | info@circlefoot.com | (650) 740 4778 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| Cisneros & Sons Plumbing INC | Mena Octavio Cisneros | — | (650) 400 3872 | Other | Redwood City · San Mateo County | — | — |
| Cisneros Garden Services INC | Vera Bernardino Cisneros | — | (650) 465 0535 | Windows, patio, painters | Redwood City · San Mateo County | — | — |
| Cisneros Landscaping LLC | Luis Antonio Cisneros | — | (650) 222 1908 | Windows, patio, painters | Redwood City · San Mateo County | — | — |
| Citadel Systems INC | Michael Edward Palafox | — | (650) 814 1109 | Electricians | Millbrae · San Mateo County | — | — |
| City 21 Construction | Oleg Kononenko | — | (786) 236 8666 | GC, remodel, ADU | Daly City · San Mateo County | — | — |
| City Arborist | City Arborist | — | (650) 321 2795 | Windows, patio, painters | Menlo Park · San Mateo County | — | — |
| City Building INC | Matthew Wallace Baldwin | info@citybuilding.com | (415) 495 6000 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| City Dweller LLC | David Brian Gohn | — | (650) 532 5858 | GC, remodel, ADU | Pacifica · San Mateo County | — | — |
| City Hardwood INC | Jonathan Vuong Le | — | (415) 656 1000 | Other | Daly City · San Mateo County | — | — |
| City Pro Painter | City Pro Painter | — | (415) 815 9106 | Windows, patio, painters | Daly City · San Mateo County | — | — |
| City Scaffold Company | Vassiliev Igor | — | (650) 343 0333 | Other | Burlingame · San Mateo County | — | — |
| Citywide Plumbing | Johnny Jamal Tawasha | — | (415) 716 1519 | Other | Daly City · San Mateo County | — | — |
| Civil Custom Cabinets INC | Joaquin Estuardo Civil | — | (650) 465 6772 | Other | Redwood City · San Mateo County | — | — |
| Ck Construction | Yu Chengkang | vathanak451@gmail.com | (408) 824 8471 | GC, remodel, ADU | South San Francisco · San Mateo County | — | — |
| Ckg Construction & Roofing Corp | He Chac Kon Ng | — | (415) 926 9500 | Other roofers | Millbrae · San Mateo County | — | — |
| Clarity Glass & Glazing | Andrew Lawton Demotte | — | (650) 376 5300 | Windows, patio, painters | Burlingame · San Mateo County | — | — |
| Clark Pest Control | Clark Pest Control | — | (650) 204-5000 | Pest, tile roofs | Belmont · San Mateo County | — | — |
| Classic Fire Protection INC | David Michael Blackman | — | (415) 307 5403 | Other | Pacifica · San Mateo County | — | — |