| Nest Builders | Bret Thomas Ashworth | — | (415) 879 9660 | GC, remodel, ADU | Mill Valley · Marin County | — | — |
| Nestler Construction INC | Peter Harding Nestler | inquiries@nestlerconstruction.com | (415) 233 3621 | GC, remodel, ADU | Lagunitas · Marin County | — | — |
| New Dimension Builders INC | Akash Dirk Von Rueben | — | (415) 302 1765 | GC, remodel, ADU | Mill Valley · Marin County | — | — |
| New Products And Services INC | James Edward Henderson | — | (415) 883 0477 | GC, remodel, ADU | Novato · Marin County | — | — |
| New Western Landscapes | New Western Landscapes | — | (415) 509 5887 | GC, remodel, ADU | Novato · Marin County | — | — |
| Newbury's Construction Co | John Matthew Newbury | — | (415) 789 0201 | GC, remodel, ADU | Tiburon · Marin County | — | — |
| Newmat Norcal INC | Debra Irene George | info@newmatnorcal.com | (415) 259 8448 | GC, remodel, ADU | Novato · Marin County | — | — |
| Newton Micro | Newton Micro | — | (415) 720 9206 | GC, remodel, ADU | Novato · Marin County | — | — |
| Newtown Construction | John Kieran Hynes | — | (415) 342 7559 | GC, remodel, ADU | Larkspur · Marin County | — | — |
| Ngd Painting | Ngd Painting | — | (415) 827 7397 | Windows, patio, painters | Novato · Marin County | — | — |
| Nica Construction INC | Jorge Antonio Aguilar Rosales | — | (341) 500 9983 | Electricians | San Rafael · Marin County | — | — |
| Nice Touch Painting & Decorating Corporation | Johan Angely Garcia Amezquita | — | (415) 250 3081 | Windows, patio, painters | Novato · Marin County | — | — |
| Nicely Done | Nicely Done | — | (415) 754 5959 | GC, remodel, ADU | Fairfax · Marin County | — | — |
| Nichelini & Sons INC | Gerald Wayne Nichelini | — | (415) 485 6791 | GC, remodel, ADU | San Anselmo · Marin County | — | — |
| Nichelini Construction Company | Alex James Nichelini | — | (415) 640 3053 | GC, remodel, ADU | Novato · Marin County | — | — |
| Nicholas Altamura | Nicholas Altamura | — | (707) 974 7300 | GC, remodel, ADU | Novato · Marin County | — | — |
| Nicholson Builders INC | Robert Jeffery Nicholson | — | (415) 218 0865 | GC, remodel, ADU | Novato · Marin County | — | — |
| Nick's Plumbing Solutions INC | Nicholas Jordan Kopan | — | (707) 775 9980 | Other | Novato · Marin County | — | — |
| Nickels Golf Group Limited | Douglas Ford Nickels | — | (415) 250 0445 | Other | San Rafael · Marin County | — | — |
| Nicolas Saarman | Nicolas Saarman | — | (415) 847 5189 | GC, remodel, ADU | Mill Valley · Marin County | — | — |
| Niko & Friends Construction Co LLC | Nikolaus Jarl Frithiof | — | (415) 606 7014 | GC, remodel, ADU | San Anselmo · Marin County | — | — |
| Nikolay Zilinskiy | Nikolay Zilinskiy | — | (415) 859 0466 | Other | Sausalito · Marin County | — | — |
| Nima Construction Company | Pirzadeh Faramarz | — | (209) 988 5477 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Nimatuj Painting | Nimatuj Painting | — | (415) 342 6790 | Windows, patio, painters | San Rafael · Marin County | — | — |
| No Ark Electric | John Ross Parker | — | (415) 897 1351 | Electricians | Novato · Marin County | — | — |
| Noel Tree & Gardening INC | Gutierrez Noel | — | (415) 663 9048 | Windows, patio, painters | Point Reyes Station · Marin County | — | — |
| Nolan Construction INC | Dwaine Thomas Nolan | — | (509) 863 6281 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Nolana LLC | Christopher Eric Greene | — | (949) 244 7556 | GC, remodel, ADU | Mill Valley · Marin County | — | — |
| Noni Homes INC | Inon Saadia Tzadok | hello@nonihomes.com | (415) 275 1884 | GC, remodel, ADU | Sausalito · Marin County | — | — |
| Norcal Firescaping Building & Home Hardening LLC | Barry F Price | — | (415) 846 5530 | GC, remodel, ADU | San Anselmo · Marin County | — | — |
| Norcal Refinishing | Norcal Refinishing | info@norcalrefinishing.com | (415) 898 4081 | Other | Novato · Marin County | — | — |
| Norfin INC DBA American Leak Detection | Robert Christian Macaulay | — | (415) 898 5325 | Other | San Rafael · Marin County | — | — |
| Norman Charles Construction INC | Norman Bernard Charles | nathan@normancharlesconstruction.com | (415) 456 6045 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| North Bay Builder | North Bay Builder | — | (415) 686 8966 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| North Bay Hardwood Floors | North Bay Hardwood Floors | — | (415) 479 3160 | Other | San Rafael · Marin County | — | — |
| North Bay Painting & Wood Preserving | Phillip Edward Makin | — | (415) 883 6411 | Windows, patio, painters | Novato · Marin County | — | — |
| North Bay Plumbing Co | John Carl Cimino | — | (415) 465 2111 | Other | San Rafael · Marin County | — | — |
| North Bay Property Services | North Bay Property Services | — | (415) 525-1181 | Property managers | Novato · Marin County | — | — |
| North Bay Shower Door INC | Ryan Charles Paulger | — | (415) 479 0626 | Windows, patio, painters | San Rafael · Marin County | — | — |
| North Bay Stump Grinding | Simon Alfredo Contreras | — | (415) 758 8106 | Other | Novato · Marin County | — | — |