| California Low Voltage LLC | Martin Curda Sidor | info@clv.llc | (669) 629 1699 | Electricians | San Jose · Santa Clara County | — | — |
| California Native Garden Foundation | Melissa Tamar Blum | — | (408) 666 1518 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| California Nativescapes LLC | Rebecca Catherine Schoenenberger | — | (408) 243 5663 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| California Painting | California Painting | — | (408) 223 8823 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| California Plumbing David INC | Won Kwon Lee | — | (408) 252 1134 | Other | San Jose · Santa Clara County | — | — |
| California Plus Engineering INC | Seyed Reza Khadivi Fard | — | (408) 821 7168 | Electricians | Campbell · Santa Clara County | — | — |
| California Pools & Spa Service | Jiman Song | — | (818) 825 0480 | Pool | San Jose · Santa Clara County | — | — |
| California Power And Light | California Power And Light | — | (408) 406 5832 | Electricians | Morgan Hill · Santa Clara County | — | — |
| California Quality Builders | Mandana Namiranian | — | (408) 512 0469 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| California Rainguard Incorporated | Gerardo Soliz | — | (408) 279 6116 | Other roofers | San Jose · Santa Clara County | — | — |
| California Ray's Construction | Scott Edward Ray | — | (408) 761 7693 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| California Roof Runners INC | Nicholas Alan Grote | californiaroofrunners@gmail.com | (408) 887-5253 | Other roofers | Campbell · Santa Clara County | — | — |
| California Roof Technicians | California Roof Technicians | — | (408) 663-7170 | Other roofers | Santa Clara · Santa Clara County | — | — |
| California Roofing Co INC | Happer Phelps Campbell | — | (408) 293 7977 | Other roofers | San Jose · Santa Clara County | — | — |
| California Specialty Contractors INC DBA Csci Construction | Steve Jin| Nam Se Jin Nam | — | (408) 845 9010 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| California Stone Care & Waterproofing | California Stone Care & Waterproofing | — | (408) 590 6312 | Other | Gilroy · Santa Clara County | — | — |
| California Superior Contractor INC | Nelson Alberto Koen Cohen | — | (650) 787 8486 | GC, remodel, ADU | Palo Alto · Santa Clara County | — | — |
| California Tile & Stone | Juan Villarreal | — | (408) 590 6312 | Other | Gilroy · Santa Clara County | — | — |
| California Tile Installers | Randall Dee Sundberg | — | (408) 436 0600 | Other | San Jose · Santa Clara County | — | — |
| California Tree Solutions | Paul Elias Sousa | — | (408) 910 5143 | Other | San Jose · Santa Clara County | — | — |
| California Utility Company | Tyrone Dennis Amundson | — | (408) 687 7803 | Other | Los Gatos · Santa Clara County | — | — |
| California Water Service Company | Darin Thomas Duncan | — | (408) 367 8200 | Other | San Jose · Santa Clara County | — | — |
| Californiair Heating And Air Conditioning INC | Erasmo Cristobal Alviar | — | (408) 705 8761 | HVAC | San Jose · Santa Clara County | — | — |
| Calistro's Tree Service | Francisco Javier Calistro Ramirez | — | (408) 794 8700 | Tree | San Jose · Santa Clara County | — | — |
| Calisun Roofing | Michael Hajaj | — | (408) 910 4275 | Other roofers | Palo Alto · Santa Clara County | — | — |
| Call Me | Call Me | — | (408) 615 9547 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Calpo Constructors | Poh Chuang Yee | — | (408) 398 3109 | GC, remodel, ADU | Saratoga · Santa Clara County | — | — |
| Calpower Electrician | Calpower Electrician | — | (669) 203 9498 | Electricians | Santa Clara · Santa Clara County | — | — |
| Calpro Artificial Turf Co | Kevin Dean Cox | kevincox2009@gmail.com | (408) 841 6939 | Other | San Jose · Santa Clara County | — | — |
| Calpro Playground Surfacing INC | Kevin Dean Cox | — | (408) 841 6939 | Other | San Jose · Santa Clara County | — | — |
| Caltia Carpentry And Framing INC | Sanchez Fernando Contreras | — | (669) 832 7223 | Other | San Jose · Santa Clara County | — | — |
| Calva Construction | Hernandez Calva Daniel | — | (408) 797 6021 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Calvac INC | Edward Sanchez Arias | — | (408) 225 7700 | Other | San Jose · Santa Clara County | — | — |
| Calvey Heating & Air | Joseph Edward Calvey | — | (650) 265 2202 | HVAC | San Jose · Santa Clara County | — | — |
| Calvin Construction INC | Xu Yiyuan | — | (408) 582 4988 | Electricians | San Jose · Santa Clara County | — | — |
| Calwaters Plumbing | Calwaters Plumbing | — | (408) 636 6594 | Other | San Jose · Santa Clara County | — | — |
| Calwest Construction | Sudha Rajen Patel | — | (510) 332 7699 | Electricians | Mountain View · Santa Clara County | — | — |
| Calwestern Property Management Painting Dept | Peter Bryan Noonan | — | (408) 554 1818 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Camacho Construction | John Patrick Whitney | — | (669) 206 7397 | GC, remodel, ADU | Mountain View · Santa Clara County | — | — |
| Camacho Painting | Camacho Painting | — | (408) 234 2482 | GC, remodel, ADU | Milpitas · Santa Clara County | — | — |