| North Valley Builders S C INC | Christopher David Agresta | — | (530) 691 3994 | GC, remodel, ADU | Redding · Shasta County | — | — |
| North Valley Remodeling LLC | Byron Ross Richter | — | (530) 999 1191 | GC, remodel, ADU | Redding · Shasta County | — | — |
| North Valley Tree Service | Jose David Leal | — | (530) 709 2166 | Other | Redding · Shasta County | — | — |
| Northern Construction | Jason Kelly Maciel | — | (707) 798 1030 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Northern Counties Roofing Systems | Joel Jemenez Magana | joel@ncroofingsystems.com | (530) 356 0686 | Other roofers | Cottonwood · Shasta County | — | — |
| Northern Country Landscapes | Northern Country Landscapes | — | (530) 736 2092 | Windows, patio, painters | Cottonwood · Shasta County | — | — |
| Northern Trees Tree Service INC | Sione Feiloakitau Misi | — | (530) 768 1330 | Tree | Redding · Shasta County | — | — |
| Northern Valley Enterprises INC | Carl Lawrence Nelson | — | (530) 515 7968 | GC, remodel, ADU | Shasta Lake · Shasta County | — | — |
| Northstate Acoustics Plus LLC | Paul James Mucks | — | (530) 941 1077 | Other | Redding · Shasta County | — | — |
| Northstate Earth And Water INC | Michael Henry Fitzgerald | — | (530) 351 3604 | Other | Redding · Shasta County | — | — |
| Northstate Electrical & Controls | David Jeffrey Paolucci | — | (530) 474 1168 | Electricians | Shingletown · Shasta County | — | — |
| Northstate Excavating | Northstate Excavating | — | (530) 604 3638 | Other | Cottonwood · Shasta County | — | — |
| Northstate Floor Installations | Northstate Floor Installations | — | (530) 276 1100 | Other | Redding · Shasta County | — | — |
| Northstate Glass | Northstate Glass | info@northstateglass.com | (530) 926-3516 | Windows, patio, painters | Mt Shasta · Shasta County | — | — |
| Northstate Rebar INC | Kevin Daniel Mehew | — | (530) 339 5313 | Other | Cottonwood · Shasta County | — | — |
| Northwest A D U | Northwest A D U | — | (530) 262 4474 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Northwest Homes | Frederick Raymond Bergstrom | — | (530) 247 0441 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Northwest Pools & Pool Plastering INC | Larry Custer Back | — | (530) 246 1494 | Pool | Redding · Shasta County | — | — |
| Northwest Septic | Gutierrez Francisco Villanueva | — | (707) 695 9578 | Other | Anderson · Shasta County | — | — |
| Northwood Backflow Services | Donald Robert Wood | — | (800) 750 4547 | Other | Redding · Shasta County | — | — |
| Nouvant Homes INC | Mark Aime Jr Gunlogson | — | (530) 244 2468 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Nrm Electric INC | Neil Ryan Moore | — | (530) 241 1123 | Electricians | Millville · Shasta County | — | — |
| Nrs Custom Builder INC | Nathan Robert Sweeney | — | (530) 941 8920 | GC, remodel, ADU | Palo Cedro · Shasta County | — | — |
| Ntk Services-general Building Contractor | Karl Robert Okulove | — | (510) 804 6263 | GC, remodel, ADU | Palo Cedro · Shasta County | — | — |
| O R Tile Innovation INC | Morales Jose Ortiz | — | (530) 351 1354 | Other | Redding · Shasta County | — | — |
| Oasis Heating & Air Corp | Jason Matthew Phipps | — | (916) 276 0141 | HVAC | Redding · Shasta County | — | — |
| Obrien Mountain Home Decking And Siding | Marcus Robert Crans | — | (530) 999 7495 | Windows, patio, painters | Redding · Shasta County | — | — |
| Old School Tile Works | Old School Tile Works | — | (530) 262 4199 | Other | Shingletown · Shasta County | — | — |
| Olson Construction | Kurt Jeffrey Olson | — | (530) 314 0296 | GC, remodel, ADU | Lakehead · Shasta County | — | — |
| Olson's Concrete INC | Jeff Garrett Olson | — | (530) 604 5437 | Other | Shasta Lake · Shasta County | — | — |
| On Point Electric | Cody Brandon Smith | — | (530) 338 6693 | Electricians | Palo Cedro · Shasta County | — | — |
| On The Level Roofing | Alexander George Miller | — | (530) 222 5894 | Other roofers | Redding · Shasta County | — | — |
| One Day Doors And Closets Of Northern California | Amy Lynn Mayer | — | (530) 624 1948 | GC, remodel, ADU | Redding · Shasta County | — | — |
| One Way Development & Construction Company INC | Timothy James Fitzpatrick | — | (530) 365 2450 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Otis Concrete | Otis Concrete | — | (530) 515 4359 | Other | Redding · Shasta County | — | — |
| Ottinger Construction | Matthew David Ottinger | — | (530) 276 8336 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Outdoor Artisans LLC | Kyle Douglas Menefee-dall | — | (530) 605 6983 | Windows, patio, painters | Redding · Shasta County | — | — |
| P F - Electric | Patrick Franklin Bouser | — | (530) 339 6196 | Electricians | Millville · Shasta County | — | — |
| P J Construction INC | Joseph Otto Lilienthal | — | (530) 515 6150 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Pa - Sons INC | Aaron Raymond Latvala | — | (530) 355 7855 | GC, remodel, ADU | Redding · Shasta County | — | — |