| Cst Tree Trimming | Christopher Keith Swanson | — | (530) 277 5211 | Tree | Nevada City · Nevada County | — | — |
| Ctm Fabricators LLC DBA Ctm Welding Fabricators | Christopher Ryan Mcintosh | — | (530) 559 3866 | Other | Grass Valley · Nevada County | — | — |
| Cubillo Construction - Eldercare Remodel INC | Gary Lucero Cubillo | — | (650) 793 1644 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Cullen Lewis Construction | Cullen Matthew Lewis | — | (530) 798 3764 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Curtis Builders | Curtis Builders | — | (530) 432 7755 | GC, remodel, ADU | Penn Valley · Nevada County | — | — |
| Curtis Haidle Construction | Curtis Matthew Haidle | — | (530) 277 4587 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Custom Canvas Awnings | Custom Canvas Awnings | — | (530) 432 7798 | Other | Grass Valley · Nevada County | — | — |
| Custom Concept Builders | Custom Concept Builders | — | (530) 320 9770 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Custom Enterprises | Mark Christopher Burmeister | interested@domainmarket.com | (530) 308 3952 | Electricians | Grass Valley · Nevada County | — | — |
| Custom Graniteworks | Custom Graniteworks | info@customgraniteworks.com | (530) 575 9206 | Other | Grass Valley · Nevada County | — | — |
| Custom Landscapes | Custom Landscapes | — | (530) 559 3135 | Windows, patio, painters | Rough And Ready · Nevada County | — | — |
| Cutting Edge Mechanical | Cutting Edge Mechanical | — | (530) 412 3501 | HVAC | Truckee · Nevada County | — | — |
| Cyrus Tree Service | Kalvin Charles Cyrus | — | (530) 271 2000 | Other | Grass Valley · Nevada County | — | — |
| Czarnowski Marble And Granite Works | Czarnowski Marble And Granite Works | — | (530) 559 3955 | Other | Nevada City · Nevada County | — | — |
| D & D Custom Seamless Rain Gutter | Larry Allan Dittebrand | — | (530) 273 4653 | Other | Cedar Ridge · Nevada County | — | — |
| D B J Construction | Dale Bruce Junker | — | (530) 559 2854 | GC, remodel, ADU | Cedar Ridge · Nevada County | — | — |
| D C Drywall & Construction | Chris Anthony Votino | — | (530) 320 2742 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| D C Electrix | D C Electrix | — | (818) 314 3904 | Electricians | Grass Valley · Nevada County | — | — |
| D D Tile | D D Tile | — | (530) 979 7885 | Other | Truckee · Nevada County | — | — |
| D E Johnson Plumbing Co | Dwight Elliott Johnson | micah@micahrich.com | (530) 277 0977 | Other | Nevada City · Nevada County | — | — |
| D E Landscaping | D E Landscaping | — | (530) 272 7102 | Windows, patio, painters | Cedar Ridge · Nevada County | — | — |
| D G H Construction | Dylan Gabriel Hennings | — | (530) 575 9669 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| D M C E Concrete & Engineering Contractors | David Michael Matson | — | (530) 272 2708 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| D M H Douglas Mower Homes | Douglas Daniel Mower | — | (530) 277 0808 | GC, remodel, ADU | Penn Valley · Nevada County | — | — |
| D S Builders | D S Builders | — | (530) 386 9024 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| D S G Design | D S G Design | — | (530) 386 4222 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| D S Jensen Construction | Dirk Scott Jensen | — | (530) 277 8693 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| D S M Concrete INC | Donald Scott Sr Militano | — | (530) 268 3230 | Other | Grass Valley · Nevada County | — | — |
| D'arata Painting LLC | Christopher Lee Darata | info@ndiscovered.com | (530) 263 6959 | Windows, patio, painters | Grass Valley · Nevada County | — | — |
| D'ville Construction INC | Timothy James Drainville | — | (530) 955 3900 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| D-fence INC | Marco Andres Gajardo | info@dfence.com | (530) 401 4179 | Other | Grass Valley · Nevada County | — | — |
| Damian Contreras | Damian Contreras | — | (530) 277 1916 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Dan Anderson Construction | Daniel James Anderson | — | (775) 544 9793 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Dan Maliszewski Constuction | Dan Maliszewski Constuction | — | (530) 518 2402 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Dan Matthew Vasquez | Dan Matthew Vasquez | — | (510) 517 8301 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Dan Reinhart - Masonry | Dan Reinhart - Masonry | danreinhart@sbcglobal.net | (530) 265 3394 | Other | Nevada City · Nevada County | — | — |
| Dan's Plumbing | Dan's Plumbing | — | (714) 273 8591 | Other | Grass Valley · Nevada County | — | — |
| Danckert Communication Co | Daniel Jonathan Danckert | — | (916) 718 3235 | Other | Grass Valley · Nevada County | — | — |
| Dangler Built Construction INC | Aaron Andrew Dangler | — | (530) 277 0544 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Daniel Flett Poston | Daniel Flett Poston | — | (530) 205 9607 | Windows, patio, painters | Grass Valley · Nevada County | — | — |