| Colombara's Cabinet And Millwork | Colombara's Cabinet And Millwork | — | (530) 662 2665 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| Colombara's INC | Eileen Sylvia Colombara | — | (530) 662 2665 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| Compass Refrigeration INC | Kyle James Hannah | — | (530) 383 6974 | HVAC | Woodland · Yolo County | — | — |
| Complete Tree Service A Partnership | Greg Scott Law | — | (916) 375 0132 | Tree | West Sacramento · Yolo County | — | — |
| Construction | Sammual Thomas Coughenour | — | (279) 200 5838 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| Continental Development & Construction INC | Sukhjit P Singh | — | (702) 287 0347 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| Cooper Well Services | Benjamin Grant Cooper | — | (530) 701 6339 | Other | Esparto · Yolo County | — | — |
| Cornell Painting | Cornell Painting | kcornell@cornell-painting.com | (415) 404 5108 | Windows, patio, painters | Winters · Yolo County | — | — |
| Corona Tile INC | Noe Sr Corona | amendez@corona-tile.com | (916) 837 3333 | Other | Esparto · Yolo County | — | — |
| Corral Custom Concrete INC | Felipe Corral | — | (916) 470 9138 | Other | West Sacramento · Yolo County | — | — |
| County Line Construction | Lucien Wade Farmer | steve@countylineconstruction.com | (530) 902 8458 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| Craft Design Build | Craft Design Build | — | (310) 962 3551 | GC, remodel, ADU | Davis · Yolo County | — | — |
| Cranston Steel Structures INC | Walter Alan Edwards | — | (530) 662 0966 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| Creative Painting | Creative Painting | sales@safetynet.co.uk | (530) 863 9425 | Windows, patio, painters | Woodland · Yolo County | — | — |
| Creek Line Construction LLC | Pablo H Mendoza | — | (530) 631 5774 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| Creekside Signs | Creekside Signs | — | (530) 400 3955 | Other | Winters · Yolo County | — | — |
| Crowned Legacy Synthetic Products | Crowned Legacy Synthetic Products | — | (916) 955 5827 | Other | West Sacramento · Yolo County | — | — |
| Curtis Tripp Construction | Curtis Eric Tripp | — | (530) 845 0508 | Other | Woodland · Yolo County | — | — |
| Custom Agronomic Solutions INC | Nick Steven Aboosh | — | (916) 277 8090 | Windows, patio, painters | West Sacramento · Yolo County | — | — |
| Custom Barn Builder | Custom Barn Builder | — | (530) 681 0796 | GC, remodel, ADU | Davis · Yolo County | — | — |
| Custom Coatings | Custom Coatings | — | (916) 718 9498 | Windows, patio, painters | Davis · Yolo County | — | — |
| Custom Gate & Access INC | David Paul Hagelthorn | — | (916) 374 8460 | Other | West Sacramento · Yolo County | — | — |
| D & L Construction | Dennis Lawrence Harry | — | (530) 383 2220 | GC, remodel, ADU | Davis · Yolo County | — | — |
| D & L Heating And Air | Kapelkin Dmitriy | — | (916) 997 2345 | HVAC | West Sacramento · Yolo County | — | — |
| D A Morris | D A Morris | — | (916) 254 8370 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| D A S Homes | David Andrew Snow | — | (530) 666 0506 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| D J B & E General Engineering | Donald Joseph Sambucetti | — | (530) 681 0804 | Other | Woodland · Yolo County | — | — |
| D K B Unlimited | D K B Unlimited | — | (916) 761 3978 | Other roofers | Davis · Yolo County | — | — |
| D Loesch Construction INC | Daniel Arthur Loesch | — | (916) 208 3406 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| D M Harris Construction | Dakota Mckinley Harris | — | (707) 365 4965 | GC, remodel, ADU | Winters · Yolo County | — | — |
| D N A Electric | David James Balmain | — | (530) 662 7774 | Electricians | Woodland · Yolo County | — | — |
| D N P Maintenance Service And Handyman | Dennis Neal Peart | — | (530) 219 2005 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| D S Powell Construction Co | Daniel Stephen Powell | — | (530) 758 5194 | GC, remodel, ADU | Davis · Yolo County | — | — |
| D&i Pipelines | D&i Pipelines | — | (530) 746 1674 | Other | Winters · Yolo County | — | — |
| D'amico Ceramic Tile | D'amico Ceramic Tile | — | (530) 979 6666 | Other | Woodland · Yolo County | — | — |
| D's Carpentry | Sorochan Dmytro | — | (916) 858 9673 | Other | West Sacramento · Yolo County | — | — |
| Dalton Byard Construction | Dalton Kirby Byard | — | (530) 867 7214 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| Dan Neff Electric | Daniel Cecil Neff | — | (530) 219 8176 | Electricians | Davis · Yolo County | — | — |
| Dana Construction | Dana Lance Sucevich | — | (530) 559 1847 | GC, remodel, ADU | Esparto · Yolo County | — | — |
| Daniel Feoktistov General Contractor Services | Feoktistov Daniel | — | (916) 505 3938 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |