| Castlewood Construction Co INC | Rosetta B Cortese | — | (408) 683 7215 | GC, remodel, ADU | San Martin · Santa Clara County | — | — |
| Castlewood Construction Company | Cortese Nick | — | (408) 887 3294 | HVAC | San Martin · Santa Clara County | — | — |
| Castrillo Heating & Air Conditioning Corp | Cabrales Nelson Castrillo | — | (408) 422 5820 | HVAC | San Jose · Santa Clara County | — | — |
| Castro Landscaping Services | Edgar Armando Castro | — | (408) 507 0532 | Windows, patio, painters | Sunnyvale · Santa Clara County | — | — |
| Castro Plumbing | J Edward Castro | — | (408) 295 7126 | Other | San Jose · Santa Clara County | — | — |
| Castro Tile | Castro Tile | — | (408) 314 5836 | Other | San Jose · Santa Clara County | — | — |
| Catmex Roofing INC | Luis Miguel Sandoval-Galindo | — | (408) 726 4042 | Other roofers | San Jose · Santa Clara County | — | — |
| Catra Plumbing | Jose Alfredo Meza Santos | — | (408) 706 1082 | Other | Morgan Hill · Santa Clara County | — | — |
| Cats Tree Service | Jonathan Robert Hartnett | — | (408) 917 0648 | Other | Los Gatos · Santa Clara County | — | — |
| Catton Properties | Catton Properties | — | (650) 773 8000 | GC, remodel, ADU | Los Altos · Santa Clara County | — | — |
| Causor's Construction INC | Causor Naranjo Ricardo Jesus | — | (408) 439 3860 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Cavere Construction INC | Juan Jose Ibarra Torres | juan@cavereconstruction.com | (650) 408-2800 | GC, remodel, ADU | Sunnyvale · Santa Clara County | — | — |
| Caviglia Construction INC | Mario Vincent Caviglia | — | (408) 898 6306 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| Cazafria Air INC | Carlos Andres Uchicua Gonzales | — | (408) 680 6232 | HVAC | San Jose · Santa Clara County | — | — |
| Cazares Construction INC | Lorenzo Lopez | — | (408) 300 8558 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Cb Process Corporation | Andre Christian Barbe | — | (408) 779 6008 | GC, remodel, ADU | Morgan Hill · Santa Clara County | — | — |
| Cb Tint INC | James Matthew Castleman | — | (408) 210 1981 | Other | Campbell · Santa Clara County | — | — |
| Cc Apollo Electric | Chatzis Christofilis | — | (408) 264 1323 | Electricians | San Jose · Santa Clara County | — | — |
| Cc Electric | Corona Cortez Carlos | — | (408) 921 4453 | Electricians | San Jose · Santa Clara County | — | — |
| Cd Builders INC | Charles Shirey Jr Hunt | — | (408) 354 2893 | GC, remodel, ADU | Campbell · Santa Clara County | — | — |
| Cd Landscaping | Cd Landscaping | — | (408) 646 6635 | Windows, patio, painters | Santa Clara · Santa Clara County | — | — |
| Cdl 88 Construction Corp | Mingyan Sun | — | (408) 623 5809 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Ceballos Concrete INC | Jacob Paul Ceballos | — | (408) 966 2603 | Other | San Jose · Santa Clara County | — | — |
| Cedar Woods Const Co | Steven Craig Woodbury | — | (408) 656 3262 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| Ceeb Construction INC | Khoshnoud Mohammad | — | (408) 499 1077 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Ceja Electric | Juan Emigdio Ceja | — | (831) 970 8975 | Electricians | Gilroy · Santa Clara County | — | — |
| Cellarcraft Climate Systems LLC | Oscar Guadalupe Munguia | — | (408) 393 0670 | HVAC | San Jose · Santa Clara County | — | — |
| Celtic Construction LLC | Augustine Paul O'dwyer | info@celtic-construction.com | (408) 973 1224 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Celtic Electric | Andrew Paul O'dwyer | — | (408) 781 7573 | Electricians | San Jose · Santa Clara County | — | — |
| Cemtech Construction | Francisco Javier Quiroz | — | (408) 910 7192 | Other | San Jose · Santa Clara County | — | — |
| Cen - Cal Heating & Air Conditioning | Okanovich Jasmin | — | (408) 896 7241 | HVAC | Los Gatos · Santa Clara County | — | — |
| Cenobio's Painting | Cenobio's Painting | — | (650) 669 0379 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Centerline Construction | Sanchez Serrano Victor | — | (408) 772 3642 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Central Coast Construction | Jeffrey Alan Robbins | — | (408) 858 6417 | Electricians | Morgan Hill · Santa Clara County | — | — |
| Central Pacific Construction | Ricardo Andres Carrasco | — | (408) 893 4810 | Other | San Jose · Santa Clara County | — | — |
| Central Systems | Central Systems | — | (408) 500 9220 | Other | Morgan Hill · Santa Clara County | — | — |
| Centrelink | Brian Timothy Maupin | — | (408) 244 0952 | Other | San Jose · Santa Clara County | — | — |
| Centrum Builders | Centrum Builders | ron@centrumbuilders.com | (408) 621 4589 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Century Bay Builders INC | Ariel Edgar Ben Ghiat | — | (888) 660 8574 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Century Bay Landscaping & Outdoor Design Corp | Richard Held | — | (202) 660 8574 | Windows, patio, painters | San Jose · Santa Clara County | — | — |