| Chapman Construction | Stanley Craig Chapman | scott.ccco@gmail.com | (707) 433 0346 | GC, remodel, ADU | Healdsburg · Sonoma County | — | — |
| Character Builders INC | Keith Borrall | — | (707) 584 6339 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Charles Custom Welding | Charles Custom Welding | lucas@charlescustomwelding.com | (707) 570 5050 | Other | Petaluma · Sonoma County | — | — |
| Charles H Watson | Charles H Watson | — | (707) 280 3527 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Charles Hope Construction | Charles Edward Hope | — | (707) 632 5936 | Other | Cazadero · Sonoma County | — | — |
| Charles Keller Construction INC | Charles Austin Keller | — | (707) 762 9000 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Charles Lantz | Charles Lantz | — | (707) 548 8256 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Charles Leon Williams Construction | Charles Leon Williams | — | (707) 529 0377 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Charles Riboli Construction | Charles Thomas Riboli | — | (707) 696 5131 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Charlie Dyche DBA Concrete Floor Polishing By Charlie Dyche | Charles Phillip Dyche | — | (530) 227 0065 | Other | Santa Rosa · Sonoma County | — | — |
| Charlie's Electric Service | Charles Otto Enlow | — | (707) 337 6389 | Electricians | Sonoma · Sonoma County | — | — |
| Chase Construction | Malcolm Neville Chase | — | (415) 717 4856 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Chavez Concrete | Chavez Concrete | — | (707) 540 1328 | Other | Santa Rosa · Sonoma County | — | — |
| Chavez Construction | Juan Enrique Chavez Orozco | — | (415) 747 9326 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Chavez Gc INC | Chavez Chavez Sergio | — | (707) 657 9010 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Chavez Landscaping | Chavez Landscaping | — | (707) 540 1328 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Chavez S Plumbing INC | Chavez Sanchez Apolinar | — | (707) 528 3511 | Other | Santa Rosa · Sonoma County | — | — |
| Chb Electric INC | Chris Brewer | chrisbrewer@chbelectric.com | (707) 755 3922 | Electricians | Santa Rosa · Sonoma County | — | — |
| Checkrite Backflow Services INC | Charles William Schoop | — | (707) 575 5296 | Other | Santa Rosa · Sonoma County | — | — |
| Chenoweth Heavy Equipment | Chenoweth Heavy Equipment | — | (707) 829 3367 | Other | Graton · Sonoma County | — | — |
| Cherry Hill Plumbing Heating And Cooling LLC | Mark Christopher Hilla | — | (707) 664 8815 | HVAC | Santa Rosa · Sonoma County | — | — |
| Cherry Ridge Excavation | Cherry Ridge Excavation | — | (707) 823 0190 | Other | Santa Rosa · Sonoma County | — | — |
| Chgi Concrete Co | Juan Israel Chavarria Garcia | — | (707) 727 5515 | Other | Rohnert Park · Sonoma County | — | — |
| Chivo's Custom Hardwood Floors LLC | Armando Carlos Carreno | — | (707) 478 3331 | Other | Rohnert Park · Sonoma County | — | — |
| Choperena Landscape | Choperena Landscape | — | (707) 480 9100 | Windows, patio, painters | Penngrove · Sonoma County | — | — |
| Chris Beavers | Chris Beavers | — | (707) 722 2858 | Other | Sebastopol · Sonoma County | — | — |
| Chris Gouvea Construction | Christopher Harris Gouvea | — | (707) 486 1902 | GC, remodel, ADU | Graton · Sonoma County | — | — |
| Chris Hofelich | Chris Hofelich | — | (707) 865 9588 | Electricians | Rio Nido · Sonoma County | — | — |
| Chris Mcdermott Construction LLC | Daniel Christopher Mc Dermott | chris@chrismcdermottconstruction.com | (415) 717 9369 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Chris Murphy Painting | Chris Murphy Painting | — | (707) 795 7641 | Windows, patio, painters | Rohnert Park · Sonoma County | — | — |
| Chris Rhodes Construction | Christopher Edward Rhodes | — | (707) 484 4189 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Chris Rodgers Painting | Chris Rodgers Painting | — | (707) 291 3231 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Chris Triggs Construction | Christopher Bernard Triggs | — | (707) 486 1563 | GC, remodel, ADU | Healdsburg · Sonoma County | — | — |
| Chris Wadleigh | Chris Wadleigh | — | (415) 246 6383 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Christians Custom Floors | Christians Custom Floors | — | (415) 525 1760 | Other | Petaluma · Sonoma County | — | — |
| Christopher Hamilton | Christopher Hamilton | — | (707) 318 8642 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Christopher Reamer | Christopher Reamer | — | (415) 298 2442 | Windows, patio, painters | Cotati · Sonoma County | — | — |
| Christopher Robin's Plumbing INC | Christopher Robin Ortega | christopherrobinsplumbing@gmail.com | (707) 363 7056 | Other | Santa Rosa · Sonoma County | — | — |
| Christopher Shepperd Cabinetry | Christopher Shepperd Cabinetry | info@christophershepperdcabinetry.com | (707) 878 2763 | Other | Cotati · Sonoma County | — | — |
| Christopher Simons | Christopher Simons | — | (707) 236 7714 | Other | Sebastopol · Sonoma County | — | — |