| Mulloy Roofing INC | Alex Edward Mulloy | info@mulloyroofing.com | (530) 536 6069 | Other roofers | Truckee · Nevada County | — | — |
| Munoz Development INC | Larry Luis Munoz | — | (530) 277 4993 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Murch Construction | Mason Gray Murch | — | (408) 786 8084 | GC, remodel, ADU | Soda Springs · Nevada County | — | — |
| Murftrician | Murphy James Schrom | — | (530) 615 9363 | Electricians | Nevada City · Nevada County | — | — |
| Murray's Yard Care | Murray's Yard Care | evan.w.murray@gmail.com | (530) 718 0418 | Windows, patio, painters | Grass Valley · Nevada County | — | — |
| N M Electric | Noah Jon Murray | — | (602) 315 5900 | Electricians | Truckee · Nevada County | — | — |
| N Paul Cryer | N Paul Cryer | — | (916) 206 5240 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| N S M Corporation | Mark Adam Neave | — | (530) 582 4138 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Nash Construction INC | Frank Thomas Nash | — | (530) 582 9498 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Native Landscapes | Native Landscapes | — | (530) 263 1704 | Windows, patio, painters | Nevada City · Nevada County | — | — |
| Native Landscapes | Donald Eric Triplat | — | (530) 205 3787 | Windows, patio, painters | Truckee · Nevada County | — | — |
| Natural Edge Saw Works INC | Christopher Alain Nelson | — | (530) 448 1162 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Navo & Sons INC | Randy Lee Navo | — | (530) 273 2964 | Other | Grass Valley · Nevada County | — | — |
| Nc Builders | Derek Christian Dykstra | — | (530) 264 8694 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Nco Development | Soroush Rahimian | — | (530) 606 0257 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Neal Gold-sullivan | Neal Gold-sullivan | — | (530) 478 7756 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Nelson's Flooring | Nelson's Flooring | — | (530) 802 1235 | Other | Cedar Ridge · Nevada County | — | — |
| Nemeth Construction INC | James Michael Nemeth | — | (530) 412 0188 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Neue Drywall | Neue Drywall | — | (530) 559 1590 | Other | Penn Valley · Nevada County | — | — |
| Nevada City Electric | Samuel Emerson Raynor | — | (530) 557 9440 | Electricians | Nevada City · Nevada County | — | — |
| Nevada City Plumbing | Nevada City Plumbing | — | (530) 615 1838 | Other | Nevada City · Nevada County | — | — |
| Nevada County Fence INC | Fred Raymond Dusty Burnett | — | (530) 272 3489 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Nevada County Painting | Nevada County Painting | — | (530) 277 6174 | Windows, patio, painters | Grass Valley · Nevada County | — | — |
| Nevada County Plumbing INC | Jason William Mc Crea | — | (530) 477 1650 | Other | Rough And Ready · Nevada County | — | — |
| Neves Construction | David Michael Neves | — | (530) 559 1502 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| New Life Landscapes | Frank Brandon Lindsen | — | (530) 559 1900 | Windows, patio, painters | Penn Valley · Nevada County | — | — |
| New Look Painting | Michael Shane Manley | — | (530) 210 9655 | Windows, patio, painters | Grass Valley · Nevada County | — | — |
| New World Mosaics | New World Mosaics | — | (505) 920 7636 | Other | North San Juan · Nevada County | — | — |
| Newbry Electric | Philip Rea Newbry | — | (530) 448 1300 | Electricians | Truckee · Nevada County | — | — |
| Newman Built | Newman Built | — | (208) 298 7415 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Nexel INC | Manel Winton Machado | — | (530) 575 5665 | Electricians | Grass Valley · Nevada County | — | — |
| Next Gen Plumbing | Next Gen Plumbing | — | (530) 388 8622 | Other | Grass Valley · Nevada County | — | — |
| Next Level Framing LLC | Gonzalez Nathan Lemus | — | (530) 414 1560 | Other | Truckee · Nevada County | — | — |
| Nick Baron Construction | Nicholas Gregory Baron | — | (518) 488 1309 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Nick Dudman Construction | Dudman Nicholas | — | (530) 412 4218 | GC, remodel, ADU | Truckee · Nevada County | — | — |
| Nick Herman Progressive Builder | Nick Herman Progressive Builder | — | (530) 318 4443 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Nick's Custom Construction | Nicholas Aaron Mansuetti | — | (530) 913 0439 | GC, remodel, ADU | Grass Valley · Nevada County | — | — |
| Nitram INC DBA Everguard Systems | Jeffrey Clay Martin | — | (530) 272 4755 | Electricians | Grass Valley · Nevada County | — | — |
| Noah Thompson Drywall | Noah Thompson Drywall | — | (530) 913 5420 | GC, remodel, ADU | Nevada City · Nevada County | — | — |
| Nor - Cal Construction | John Carl Fisher | — | (530) 432 1683 | Other | Grass Valley · Nevada County | — | — |