| Brown Bear INC | Frank Daniel Brown | — | (530) 587 2895 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Bruce E Piner | Bruce E Piner | — | (530) 913 4448 | GC, remodel, ADU | Penn Valley · Nevada County | — | — |
| Bruces Plumbing | Bruces Plumbing | — | (530) 863 5977 | Other | Grass Valley · Nevada County | — | — |
| Brumm Built | David O'connor Brumm | dave.brumm@icloud.com | (530) 320 1802 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Brush Masters Paint Co | Jamison Anthony Hickman | — | (530) 913 3143 | Windows, patio, painters | Grass Valley · Nevada County | — | — |
| Bryan's Heating & Air Conditioning | Bryan's Heating & Air Conditioning | — | (530) 292 3699 | HVAC | Nevada City · Nevada County | — | — |
| Buck Built | Nicholas Robert Buck | — | (530) 464 8834 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Budget Painting | Budget Painting | impallari@gmail.com | (530) 913 6968 | Windows, patio, painters | Chicago Park · Nevada County | — | — |
| Buehler Enterprises | David Edward Buehler | — | (530) 913 7927 | GC, remodel, ADU | Cedar Ridge · Nevada County | — | — |
| Buff Guy Construction | Adam Joseph Voigtlander | — | (920) 946 3863 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Bugle Builders | Bugle Builders | — | (530) 632 3702 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Buildsmith Construction | Lawson Hencz Smith | buildsmithnw@gmail.com | (208) 841-5557 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Bullion Construction | Andrew Paul Bullion | — | (530) 448 3007 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Burgess - Martin INC | Christopher Thomas Burgess | — | (530) 582 1804 | Windows, patio, painters | Truckee · Nevada County | — | — |
| Buster Building | Buster Building | — | (408) 234 2922 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Byers Electrix And Controls | Byers Electrix And Controls | — | (530) 477 8784 | Electricians | Grass Valley · Nevada County | — | — |
| C & D Contractors INC | David Ted Petty | — | (530) 272 6938 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| C A S E Contracting INC | Susan Jane Colbert | — | (530) 277 0917 | Electricians | Grass Valley · Nevada County | — | — |
| C B Tyler Carpenter | C B Tyler Carpenter | — | (510) 506 0902 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| C D Construction | Craig Eugene Daugherty | — | (530) 477 2362 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| C J F Construction | Chris John Fry | — | (530) 913 0649 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| C M B Construction | Chris Michael Bonelli | — | (530) 913 1677 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| C Porter Construction | Christopher Lee Porter | — | (530) 913 6139 | GC, remodel, ADU | Rough And Ready · Nevada County | — | — |
| C R Bert Construction | Carl Richard Bert | — | (925) 382 0027 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| C R M Construction | Christoph Michael Rutz | — | (530) 412 3822 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| C R Trucking And Excavating | C R Trucking And Excavating | — | (530) 263 6821 | Other | Grass Valley · Nevada County | — | — |
| C S M Fire Protection | C S M Fire Protection | — | (530) 559 9619 | Other | Grass Valley · Nevada County | — | — |
| C U Builds Construction | Corbin Wallace Usinger | — | (925) 360 2009 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| C W Construction | Craig Eugene Weaver | — | (530) 802 1132 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| C10 Fire Alarm | Kevin Patrick Mc Elwee | — | (530) 830 6775 | Electricians | Grass Valley · Nevada County | — | — |
| C3x INC DBA Clean Cut Construction | Joshua Steven Grandell | — | (530) 559 8204 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Cahoon Construction | Michle Ladd Cahoon | — | (530) 559 4409 | GC, remodel, ADU | Penn Valley · Nevada County | — | — |
| Calder Construction L L C | Cory Dalton Calder | — | (530) 416 2421 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| California Custom Painting | Michael James Foley | interested@domainmarket.com | (925) 829 3252 | Windows, patio, painters | Penn Valley · Nevada County | — | — |
| California Flooring LLC | Hipolito Hurtado | — | (530) 344 3888 | Other | Grass Valley · Nevada County | — | — |
| California Green Energy Construction | Christopher Casimir Woytus | — | (530) 575 1291 | Electricians | Grass Valley · Nevada County | — | — |
| California Outdoor | California Outdoor | — | (916) 217 2955 | Other | Rough And Ready · Nevada County | — | — |
| Cam Construction | Christian Ananda Malone | — | (530) 559 0347 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Campbell Construction | Jerry Allen Campbell | — | (530) 613 2247 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Cannon's Well Pump Service | Albert Michael Cannon | micah@micahrich.com | (530) 913 7225 | Other | Grass Valley · Nevada County | — | — |