| Clarks Hardwood Floors INC | Joseph Paul Mardesich | — | (408) 866 5485 | Other | Campbell · Santa Clara County | — | — |
| Claros Construction | Mario Remes Claros | — | (408) 386 0917 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Clary's Painting | Clary's Painting | — | (408) 205 4904 | Windows, patio, painters | Mt Hamilton · Santa Clara County | — | — |
| Classic Acoustics | Classic Acoustics | classicacoustics@hotmail.com | (408) 857 3514 | Other | Santa Clara · Santa Clara County | — | — |
| Classic Carpets & Hardwood INC | Bruce Lawton Deremer | — | (408) 497 4397 | Other | San Jose · Santa Clara County | — | — |
| Classic Floor Installations | Classic Floor Installations | — | (408) 813 3820 | Other | San Jose · Santa Clara County | — | — |
| Classic Glass INC | Thomas Richard Jr Formosa | — | (408) 293 7606 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Classic Kitchens Of Almaden INC | Linda Carol Wood | — | (408) 267 3365 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Classic Oak Designs | Classic Oak Designs | — | (408) 371 1370 | Other | Morgan Hill · Santa Clara County | — | — |
| Clausen Electric INC | Mark Christian Clausen | — | (408) 927 7332 | Electricians | San Jose · Santa Clara County | — | — |
| Clayton Tapia Construction | Clayton Edward Tapia | — | (650) 271 8757 | GC, remodel, ADU | Morgan Hill · Santa Clara County | — | — |
| Clean Air Company INC | George Henry Jr Anderson | — | (415) 604 2005 | HVAC | San Jose · Santa Clara County | — | — |
| Clean Cut Concrete INC | William Elwood Brown | hello@cleancutconcrete.com | (855) 544 7654 | Other | San Jose · Santa Clara County | — | — |
| Clean Roofing | Micah David Johnson | info@cleanroofing.com | (888) 336 2115 | Other roofers | San Jose · Santa Clara County | — | — |
| Clean Room Builders INC | Shaun Thomas Olson | eben@eyebytes.com | (408) 371 3400 | GC, remodel, ADU | Campbell · Santa Clara County | — | — |
| Clean Spaces Painting INC | Gildardo Sr Rodriguez Velazquez | — | (408) 375 6598 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Clear Design & Build INC | Timothy Foong Y Ho | info@cleardesignbuild.com | (310) 634 4109 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Clear Drain Plumbing | Jason Devargas Bayard | contactus@cleardrainplumbing.com | (408) 358 3242 | Other | Los Gatos · Santa Clara County | — | — |
| Clearsky Builders INC | Trevar Michael Shyshka | — | (408) 628 4125 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Clearway Restoration | Clearway Restoration | — | (408) 457-0826 | Restoration | Santa Clara · Santa Clara County | — | — |
| Cleo Painting INC | Oscar Osvaldo Gomez | contact@cleopainting.com | (408) 348 2081 | Windows, patio, painters | Gilroy · Santa Clara County | — | — |
| Clever Design And Remodeling INC | Levi Roey | — | (669) 309 5454 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Clever Electric | My Q Ngo | service@cleverelectric.com | (408) 674 4260 | Electricians | San Jose · Santa Clara County | — | — |
| Clg Home Construction LLC | Lee Ghee Chng | — | (408) 888 7431 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Clickaway Corporation | Salvador Farias | — | (408) 626 9050 | Other | Campbell · Santa Clara County | — | — |
| Clicker Cable | Clicker Cable | robert@clickercable.com | (408) 375 4140 | Other | San Jose · Santa Clara County | — | — |
| Clifton Company | Christopher Taylor Clifton | — | (408) 782 7662 | GC, remodel, ADU | Morgan Hill · Santa Clara County | — | — |
| Climate Control | Brian Eric Garlow | contact@climatecontrol.com | (408) 691 3000 | HVAC | Cupertino · Santa Clara County | — | — |
| Climate Matters Heating And Air Conditioning INC | Frank David Catanzaro | — | (408) 861 0786 | HVAC | Santa Clara · Santa Clara County | — | — |
| Cline Construction | Jason Boe Cline | mariela.barrera@alphacomarketing.com | (408) 410 0581 | GC, remodel, ADU | Morgan Hill · Santa Clara County | — | — |
| Cline-ashford Contractors INC | William Richard Cline | — | (408) 314 0007 | GC, remodel, ADU | Gilroy · Santa Clara County | — | — |
| Clk Building INC | Daniel Le Roy Jr Snyder | clkbuilding@gmail.com | (408) 833 8896 | GC, remodel, ADU | Cupertino · Santa Clara County | — | — |
| Clove Plumbing LLC | Juan Manuel Ortiz | — | (408) 337 1680 | Other | Gilroy · Santa Clara County | — | — |
| Clover Construction | Cortez-martinez Alejandra | — | (650) 444 1324 | GC, remodel, ADU | East Palo Alto · Santa Clara County | — | — |
| Clp Tile & Countertops INC DBA Clp Tile Countertops | Jose Luis Barragan | — | (408) 717 0442 | Other | San Jose · Santa Clara County | — | — |
| Clyde Collishaw Sprinklers INC | Dani Diane Brode | — | (408) 988 5316 | Windows, patio, painters | Santa Clara · Santa Clara County | — | — |
| Cm Builders General Construction INC | Johnnatan Chavez-Ramirez | — | (669) 327 5000 | GC, remodel, ADU | San Martin · Santa Clara County | — | — |
| Cm Electrical Services | Luis Carlos Medina | — | (408) 646 7825 | Electricians | Gilroy · Santa Clara County | — | — |
| Cmb Construction INC | Huy Vu | — | (408) 680 9161 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Cn Carpenters LLC | Aguilar Marcos Pinon | cnc@cncarpenters.com | (669) 286 5712 | GC, remodel, ADU | Campbell · Santa Clara County | — | — |