| Construction Dreams INC | Mykhailo Pavlyk | — | (916) 217 2582 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Construction Performance Services | Todd Patrick Thatcher | — | (916) 606 1519 | GC, remodel, ADU | Loomis · Placer County | — | — |
| Containurspace LLC | Paul Vance Lancaster | info@containurspace.com | (916) 295 2120 | GC, remodel, ADU | Rocklin · Placer County | — | — |
| Continental Concrete | Continental Concrete | — | (530) 906 0012 | Other | Colfax · Placer County | — | — |
| Contract Property Maintenance | Alexander Zebadiah Chaney | achaney@contractpropertymaintenance.com | (916) 581 0206 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Control Solutions INC | Michael Alen Steiner | — | (916) 847 1326 | Electricians | Loomis · Placer County | — | — |
| Controltech Solutions | Richard Bill Chowdry | controls@controltechsolutions.com | (916) 797 4900 | HVAC | Roseville · Placer County | — | — |
| Cook's Custom Painting | Cook's Custom Painting | — | (916) 543 4386 | Windows, patio, painters | Lincoln · Placer County | — | — |
| Cool Erectors | Cool Erectors | impallari@gmail.com | (916) 825 3614 | Other | Loomis · Placer County | — | — |
| Cool Pools Service & Repair | Jack Patrick Jr Bishop | — | (916) 781 7665 | Pool | Rocklin · Placer County | — | — |
| Copper Automation Low Voltage | Brett Michael Henry | — | (530) 269 9641 | Other | Auburn · Placer County | — | — |
| Copper Mill Metals | Copper Mill Metals | — | (916) 202 1925 | Other | Auburn · Placer County | — | — |
| Cordes General Contractor | Cordes General Contractor | — | (916) 223 3565 | GC, remodel, ADU | Lincoln · Placer County | — | — |
| Core Plumbing | Marco Antonio Gutierrez | — | (916) 890 7449 | Other | Loomis · Placer County | — | — |
| Core West INC | Timothy William Roley | — | (972) 668 9340 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Corley Contemporary Painting INC | Matthew Dale Corley | — | (916) 382 6261 | Windows, patio, painters | Rocklin · Placer County | — | — |
| Cornel Tile & Bath | Cornel Tile & Bath | — | (916) 770 5661 | Other | Roseville · Placer County | — | — |
| Corneliu's Painting | Corneliu's Painting | — | (916) 521 0318 | Windows, patio, painters | Newcastle · Placer County | — | — |
| Cornerstone Construction & Realty | Mandeep Kang | — | (916) 240 2747 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Cornerstone Construction J C INC | Alin Emanuel Brazovan | — | (916) 825 0101 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Cornerstone Integrity Builders | Cornerstone Integrity Builders | — | (530) 889 9511 | GC, remodel, ADU | Auburn · Placer County | — | — |
| Cornett Construction | Richard Edward Cornett | — | (916) 534 4368 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Cornice Construction | Michael Allen Roland | mike@cornice-construction.com | (775) 343 6900 | GC, remodel, ADU | Homewood · Placer County | — | — |
| Coronado's Painting | Lizarraga Ramon Coronado | — | (916) 301 8533 | Windows, patio, painters | Roseville · Placer County | — | — |
| Corporate Design Group INC | Carol Elaine Parra | cdginfo@corporatedesigngroup.com | (916) 781 6543 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Cortech | Charles Henry Iii Bona | — | (415) 602 4221 | GC, remodel, ADU | Granite Bay · Placer County | — | — |
| Cory Light Construction INC | Cory Benjamin Light | — | (916) 765 5968 | GC, remodel, ADU | Newcastle · Placer County | — | — |
| Cosgrove Custom Pools INC | Mason Lynn Cosgrove | info@cosgrovecustompools.com | (530) 305 2608 | Pool | Loomis · Placer County | — | — |
| Coss General Building Contractor | Coss General Building Contractor | — | (805) 234 5106 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Cost - U - Less Construction | Craig Brian Scoggin | — | (916) 751 9292 | GC, remodel, ADU | Meadow Vista · Placer County | — | — |
| Costa Painting | Costa Painting | — | (916) 628 9943 | Windows, patio, painters | Roseville · Placer County | — | — |
| Cota Painting | Cota Painting | — | (916) 782 2050 | Windows, patio, painters | Roseville · Placer County | — | — |
| Counter Tops | Emil Maghiar | — | (916) 870 8900 | Other | Newcastle · Placer County | — | — |
| Country Air Conditioning INC | Daniel Roy Nelson | — | (530) 889 2332 | HVAC | Applegate · Placer County | — | — |
| Courage Pools INC | James Eugene Courage | — | (916) 797 3000 | Pool | Newcastle · Placer County | — | — |
| Craddock Plumbing | Craddock Plumbing | — | (916) 532 7639 | Other | Applegate · Placer County | — | — |
| Craft Construction | John Eric Craycraft | — | (916) 213 3173 | GC, remodel, ADU | Auburn · Placer County | — | — |
| Craft Remodelers | Chama Misrrael Vargas | — | (650) 575 7484 | GC, remodel, ADU | Rocklin · Placer County | — | — |
| Craig A Lynch | Craig A Lynch | — | (530) 613 3894 | Windows, patio, painters | Auburn · Placer County | — | — |
| Craig A Neubauer | Craig A Neubauer | — | (916) 807 4358 | GC, remodel, ADU | Foresthill · Placer County | — | — |