| C S Anderson | C S Anderson | — | (916) 801 1265 | Electricians | Auburn · Placer County | — | — |
| C Scott Construction | Scott Christopher | office@cscottconstruction.com | (916) 320 2534 | GC, remodel, ADU | Rocklin · Placer County | — | — |
| C W A Electric | Clifford Wayne Armstrong | — | (916) 796 5056 | Electricians | Roseville · Placer County | — | — |
| C W Haskell Construction | Casey William Haskell | — | (530) 414 5591 | GC, remodel, ADU | Kings Beach · Placer County | — | — |
| C W Jackson Electric INC | Christopher William Jackson | — | (916) 768 4459 | Electricians | Granite Bay · Placer County | — | — |
| C&t Welding INC | Delucci- Charles A Delucci Chuck | — | (916) 663 1290 | Other | Newcastle · Placer County | — | — |
| Ca Asphalt Maintenance | Samuel Matthew Stanley | impallari@gmail.com | (707) 534 0585 | Other | Lincoln · Placer County | — | — |
| Ca Drywall INC | Rangel Cornelio Ambriz | — | (916) 272 6153 | Other | Sheridan · Placer County | — | — |
| Cab Construction | Charles Anthony Jr Brashear | — | (916) 849 0772 | Electricians | Granite Bay · Placer County | — | — |
| Cab-instalex | Kostylev Aleksandr | — | (916) 957 6177 | Other | Roseville · Placer County | — | — |
| Cabana Pool Service | Ricky Dale Foster | — | (916) 206 9062 | Pool | Lincoln · Placer County | — | — |
| Cabinet Mill INC | Dale Robert Solomon | — | (916) 786 6064 | Other | Roseville · Placer County | — | — |
| Cabinet Tree INC | Lopez Richard | — | (916) 300 9407 | GC, remodel, ADU | Rocklin · Placer County | — | — |
| Cadwell Construction | Brendan Gavin Cadwell | — | (650) 346 1033 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Cain Brothers INC | Shawn Scott Cain | — | (530) 503 7394 | Tree | Foresthill · Placer County | — | — |
| Cal Bear Construction | Nikitin Daniil | — | (916) 223 4813 | GC, remodel, ADU | Auburn · Placer County | — | — |
| Cal Flooring | Cal Flooring | ninfo@calflooring.com | (530) 889 8801 | Other | Auburn · Placer County | — | — |
| Cal Floors Hb INC | Henry Zislav Brostovski | — | (916) 872 5545 | Other | Lincoln · Placer County | — | — |
| Cal North Electric LLC | Zachary Alan Frerichs | — | (916) 218 9763 | Electricians | Roseville · Placer County | — | — |
| Cal Pro Builders Company INC | Konstantin Victorvich Zhirkov | info@calprobuilders.com | (916) 628 1245 | HVAC | Roseville · Placer County | — | — |
| Cal State Installers | Cal State Installers | — | (916) 390 4105 | Windows, patio, painters | Roseville · Placer County | — | — |
| Cal Tech Pool Service | Joseph Larry Blumenfeld | — | (916) 247 7665 | Pool | Granite Bay · Placer County | — | — |
| Cal Wild Landscapes LLC | Matthew Benjamin Huffines | info@calwildlandscapes.com | (530) 219 5205 | Windows, patio, painters | Loomis · Placer County | — | — |
| Cal-concrete | Robert Authur Jr Reagh | — | (916) 652 4598 | Other | Loomis · Placer County | — | — |
| Cal-vada Painting & Decorating | Cal-vada Painting & Decorating | — | (530) 823 0861 | Windows, patio, painters | Auburn · Placer County | — | — |
| Caldwell Associates Construction | Troy Randy Caldwell | — | (530) 583 5761 | GC, remodel, ADU | Tahoe City · Placer County | — | — |
| Calgen Electric | Jeff William Elias | — | (408) 560 8013 | Electricians | Roseville · Placer County | — | — |
| Cali Air | Cali Air | — | (916) 622 0907 | HVAC | Lincoln · Placer County | — | — |
| Cali Bathroom Experts | Yevgeniy Yevgenievich Pchelnikov | — | (916) 616 0061 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Cali Siding And Windows | Aleksandr V Shylo | — | (916) 223 1065 | GC, remodel, ADU | Roseville · Placer County | — | — |
| California Air Comfort | California Air Comfort | — | (530) 415 3114 | HVAC | Rocklin · Placer County | — | — |
| California Building Care | California Building Care | — | (925) 765 4519 | HVAC | Rocklin · Placer County | — | — |
| California Carpentry & Construction | Roy Miller Jr Anderson | — | (916) 257 8521 | GC, remodel, ADU | Rocklin · Placer County | — | — |
| California Carpet Center INC | Carlos Raul Lara | — | (916) 626 6800 | Other | Rocklin · Placer County | — | — |
| California Construction Solutions | Ross Cody Johnson | — | (916) 272 4941 | GC, remodel, ADU | Lincoln · Placer County | — | — |
| California Custom Coatings | Jonathan Thomas Celone | — | (916) 612 2399 | Other | Loomis · Placer County | — | — |
| California Custom Gates | Allen Richard Myhre | — | (916) 765 6078 | Other | Sheridan · Placer County | — | — |
| California Customs INC | Eric W Kastell | — | (916) 870 1051 | GC, remodel, ADU | Granite Bay · Placer County | — | — |
| California Environmental And Demolition Corporation | Daniel Erin Rutan | — | (408) 807 8671 | Other | Roseville · Placer County | — | — |
| California Exteriors Incorporated | Darcy A Johnson | — | (916) 601 2603 | GC, remodel, ADU | Roseville · Placer County | — | — |