| Cal-sierra Electric | Suzanne Marie De Coite | — | (530) 249 3976 | Electricians | Beckwourth · Plumas County | — | — |
| Caldeira Woodworks | Caldeira Woodworks | — | (707) 671 3249 | Other | Quincy · Plumas County | — | — |
| Caley Electric | Richard Anthony Caley | — | (530) 836 1777 | Electricians | Cromberg · Plumas County | — | — |
| Capstone Services Group | Brian Scott Hayes | — | (530) 616 0455 | GC, remodel, ADU | Portola · Plumas County | — | — |
| Carl's Home Repair | Carl's Home Repair | — | (530) 592 6838 | GC, remodel, ADU | Graeagle · Plumas County | — | — |
| Carmichael & Hovland A Partnership | Randy Alan Hovland | — | (530) 375 0914 | Other | Greenville · Plumas County | — | — |
| Carson Construction | Jack Owen Carson | — | (530) 680 3078 | GC, remodel, ADU | Greenville · Plumas County | — | — |
| Cedar Canyon Electric INC | Scott Foriest Cunningham | scott@cedarcanyonelectric.com | (415) 272 5049 | Electricians | Blairsden · Plumas County | — | — |
| Challenge Electric | William Xavier Iv Norton | — | (530) 394 4646 | Electricians | Clio · Plumas County | — | — |
| Chance Construction | Kenneth Leroi Chance | — | (530) 263 6814 | GC, remodel, ADU | Quincy · Plumas County | — | — |
| Charter Building Company | Paul Andrew Alkire | — | (408) 898 8328 | GC, remodel, ADU | Portola · Plumas County | — | — |
| Chillergy | Chesley Don Jr Pence | — | (530) 283 2653 | HVAC | Quincy · Plumas County | — | — |
| Chris Taylor Builder INC | Christopher Charles Taylor | — | (775) 354 7310 | GC, remodel, ADU | Chilcoot · Plumas County | — | — |
| Christopher Collins Painting | Christopher Collins Painting | — | (530) 917 5479 | Windows, patio, painters | Portola · Plumas County | — | — |
| Clint's Tree Service INC | Clinton Stephen Tissot | — | (530) 816 0994 | Tree | Chester · Plumas County | — | — |
| Clinton Eugene Fuller Plumbing | Clinton Eugene Fuller Plumbing | — | (530) 258 6830 | Other | Chester · Plumas County | — | — |
| Collins Pine Company | Collins Pine Company | caprivacyrightsrequests@collinsco.com | (503) 826-5306 | Restoration | Chester · Plumas County | — | — |
| Comet Coatings | Comet Coatings | — | (530) 249 7565 | Windows, patio, painters | Crescent Mills · Plumas County | — | — |
| Compton Construction | Matthew Boyd Compton | — | (530) 251 7356 | GC, remodel, ADU | Portola · Plumas County | — | — |
| Coronado Welding Services INC | Jose Cristino Coronado | — | (530) 563 8035 | Other | Portola · Plumas County | — | — |
| Crescent Underwater General Engineering Contractors | Ronald Eugene Jr Null | — | (530) 816 0019 | Other | Crescent Mills · Plumas County | — | — |
| Cretecraft Concrete Construction | Dixie Lee Higgins | — | (530) 832 4226 | Other | Portola · Plumas County | — | — |
| Crosby Paving | Crosby Paving | — | (530) 284 1474 | Other | Canyon Dam · Plumas County | — | — |
| Crystal Springs Plumbing Co | Gary Robert Lachine | info@crystalspringsplumbing.com | (650) 207 0902 | Other | Clio · Plumas County | — | — |
| Current Electric & Alarm INC | Alan Walter Vaughan | — | (530) 249 1937 | Electricians | Portola · Plumas County | — | — |
| D N A Concrete | Aaron Edward Marro | — | (530) 258 6503 | Other | Chester · Plumas County | — | — |
| D P Technical | D P Technical | — | (530) 277 2827 | Electricians | Quincy · Plumas County | — | — |
| Dalby Construction | Deron Robert Dalby | — | (530) 258 2614 | GC, remodel, ADU | Chester · Plumas County | — | — |
| Dan Smith Construction | Danniel Scott Smith | — | (530) 258 9203 | GC, remodel, ADU | Chester · Plumas County | — | — |
| Daniel Dailey Construction | Daniel James Dailey | — | (530) 521 3961 | GC, remodel, ADU | Chester · Plumas County | — | — |
| David L Hansell Jr DBA G T O Painting | G T O Painting | — | (415) 407 8504 | Windows, patio, painters | Clio · Plumas County | — | — |
| Davis Roofing | Kenneth Martin Davis | — | (530) 258 1607 | Other roofers | Quincy · Plumas County | — | — |
| Dawson Construction | Malcolm Mac Gregor Dawson | — | (530) 258 6993 | GC, remodel, ADU | Blairsden · Plumas County | — | — |
| Diamond Stone Masonry | Diamond Stone Masonry | — | (916) 296 7115 | Other | Portola · Plumas County | — | — |
| Dickens Drilling | Benjamin Samuel Grant | — | (530) 283 4844 | Other | Quincy · Plumas County | — | — |
| Dig It Construction INC | Caleb Edward Holland | — | (530) 258 3306 | Other | Chester · Plumas County | — | — |
| Dirt Works | Dirt Works | — | (530) 927 7855 | Other | Greenville · Plumas County | — | — |
| Diversified Construction Services | David Allen Adcock | interested@domainmarket.com | (530) 260 3815 | GC, remodel, ADU | Crescent Mills · Plumas County | — | — |
| Diversified Resources INC | Traci Lynn Holt | — | (530) 375 7716 | Tree | Chester · Plumas County | — | — |
| Diversified Wood Designs | Diversified Wood Designs | — | (530) 559 2425 | GC, remodel, ADU | Clio · Plumas County | — | — |