| Nemesis Fire | Nemesis Fire | nemesisfire78@gmail.com | (707) 495 5051 | Other | Santa Rosa · Sonoma County | — | — |
| Nereo Woodworking | Nereo Woodworking | — | (707) 838 4424 | Other | Windsor · Sonoma County | — | — |
| Nessco Construction INC | Edward Joseph Nessinger | — | (707) 953 4500 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Nest Builder | Nest Builder | — | (707) 479 7549 | GC, remodel, ADU | Penngrove · Sonoma County | — | — |
| New Century Construction | Matt Yan-ming Ho | — | (707) 217 0183 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| New Creation Builders | New Creation Builders | ss@newcreationbuilders.com | (707) 292 4783 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| New Era Electric | Thrash Donald | info@neweraelectric.wpenginepowered.com | (707) 486 7172 | Electricians | Healdsburg · Sonoma County | — | — |
| New Era Plumbing Company INC | Rueda Paramo Fulgencio | info@neweraplumbing.com | (707) 490 5003 | Other | Santa Rosa · Sonoma County | — | — |
| New Freedom Construction | Juan Manuel Guerrero Sanchez | — | (707) 888 4887 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| New Image Plumbing Incorporated | Michael Lloyd Thomas | — | (707) 292 2523 | Other | Sebastopol · Sonoma County | — | — |
| New Line Fencing | Kurtis Alan Bernd | — | (707) 396 8940 | Other | Sebastopol · Sonoma County | — | — |
| New Line Painting INC | Leonel Nunez Medrano | — | (707) 292 6834 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| New Pro Painting INC | Vargas Audel Sandoval | newpropaintingllc@gmail.com | (707) 703 8550 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| New World Manufacturing INC | Stephanie Nicole Burton | — | (707) 894 5257 | Other | Cloverdale · Sonoma County | — | — |
| Newline Designs & Install | Newline Designs & Install | — | (707) 239 0371 | Electricians | Rohnert Park · Sonoma County | — | — |
| Newline Plumbing LLC | Dennis Earl Debenham | — | (707) 623 2054 | Other | Santa Rosa · Sonoma County | — | — |
| Next Day Air And Heating | Next Day Air And Heating | — | (707) 408 4328 | HVAC | Cotati · Sonoma County | — | — |
| Next Generation Concrete Construction | Erick Matthew Auerbach | — | (707) 758 1021 | Other | Rohnert Park · Sonoma County | — | — |
| Next Generation Electric INC | Cesar Basulto-Brambila | — | (707) 870 1177 | Electricians | Rohnert Park · Sonoma County | — | — |
| Next Level Heating And Air Conditioning INC | Charles Grant Nelson | — | (415) 464 7816 | HVAC | Santa Rosa · Sonoma County | — | — |
| Next Level Quality Painting | Next Level Quality Painting | nextlevelqualitypainting@gmail.com | (707) 852 9391 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Nh Construction | Dylan Neilson Howard | — | (707) 591 6286 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Niall Murray Electric | Niall Gerard Murray | — | (415) 819 8348 | Electricians | Sebastopol · Sonoma County | — | — |
| Nicholas Ceschin DBA N L C Builders | N L C Builders | — | (650) 575 6493 | GC, remodel, ADU | Glen Ellen · Sonoma County | — | — |
| Nicholas Graham Plumbing | Nicholas Graham Plumbing | — | (707) 328 4910 | Other | Rohnert Park · Sonoma County | — | — |
| Nicholas John Klemenok | Nicholas John Klemenok | — | (707) 338 8626 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Nicholas Johnson Innovative Systems INC | Stephen Eastmond Johnson | — | (707) 484 6718 | Other | Forestville · Sonoma County | — | — |
| Nicholas Kardum Painting | Nicholas Kardum Painting | nskardum@gmail.com | (707) 494 8959 | Windows, patio, painters | Sonoma · Sonoma County | — | — |
| Nicholas Rago | Nicholas Rago | — | (909) 544 0038 | Electricians | Rohnert Park · Sonoma County | — | — |
| Nicholas Wayne Deiter | Nicholas Wayne Deiter | — | (707) 349 3360 | Other | Petaluma · Sonoma County | — | — |
| Nichols Construction | Todd Alan Nichols | — | (707) 886 5146 | Other | Annapolis · Sonoma County | — | — |
| Nick A Bursio Construction INC | Nicholas Angelo Bursio | — | (707) 753 1818 | GC, remodel, ADU | Penngrove · Sonoma County | — | — |
| Nick Gough Construction | Gough Nick Constrution | — | (805) 432 8787 | GC, remodel, ADU | Occidental · Sonoma County | — | — |
| Nick Prokopakis | Nick Prokopakis | — | (707) 953 0307 | Other | Santa Rosa · Sonoma County | — | — |
| Nick Ryan Construction | Nicholas Fitzmaurice Ryan | — | (707) 696 3669 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Nicole La Bare | Nicole La Bare | — | (707) 328 5395 | Other | Penngrove · Sonoma County | — | — |
| Nieto Landscaping & Maintenance | Nieto Gerardo | — | (707) 239 0158 | Windows, patio, painters | Healdsburg · Sonoma County | — | — |
| Nigel Sims Painting | Nigel Sims Painting | — | (415) 279 3927 | Windows, patio, painters | Petaluma · Sonoma County | — | — |
| Niko Flooring Company | Niko Corey Flores | — | (707) 293 8370 | GC, remodel, ADU | Graton · Sonoma County | — | — |
| Nilsen Construction | Chris David Nilsen | — | (415) 601 1193 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |