| N E C Building Services INC | Jorge Luis Morales | — | (909) 236 7791 | GC, remodel, ADU | Wildomar · Riverside County | — | — |
| N G B INC | Alvaro Alejandro Ojeda | — | (909) 562 7995 | GC, remodel, ADU | San Jacinto · Riverside County | — | — |
| N H Pool Solutions | N H Pool Solutions | — | (760) 898 4109 | Electricians | Cathedral City · Riverside County | — | — |
| N Line Electric INC | Melanie Autumn Dockett | — | (951) 963 4257 | Electricians | Riverside · Riverside County | — | — |
| N P Mechanical INC | Cecil Joseph Hallinan | — | (951) 667 4220 | HVAC | Corona · Riverside County | — | — |
| N S Paving | Nick John Stanley | — | (209) 410 0584 | Other | Perris · Riverside County | — | — |
| N X P Construction Services | Philip Jackson Park | — | (951) 530 1687 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| N2ec Aircon And Heating Corporation | Lourdes Salazar Capinpin | — | (951) 496 7050 | HVAC | Corona · Riverside County | — | — |
| N8 - Design Build | N8 - Design Build | — | (619) 210 9465 | GC, remodel, ADU | Lake Elsinore · Riverside County | — | — |
| Nabil R Zeidan | Nabil R Zeidan | — | (818) 836 7624 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Nadav Joshua | Nadav Joshua | — | (951) 440 9960 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Nadeau Tile | Nadeau Tile | — | (909) 628 2049 | Other | Menifee · Riverside County | — | — |
| Nailed It Construction | Stacy Dion Jr Morrison | — | (951) 252 3622 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Najar Patios INC | Eddy Ari Najar | — | (951) 349 6341 | Other | Perris · Riverside County | — | — |
| Najera General Contracting | Miguel Angel Jr Najera | — | (951) 500 4043 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Nakai Painting Co | Gerard August Grandi | — | (957) 285 4109 | Windows, patio, painters | Temecula · Riverside County | — | — |
| Nalu Construction INC | Scott Michael Hardy | — | (951) 551 8963 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Nandor Kasa Construction Co | Kasa Nandor | — | (760) 612 2071 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Nangies Construction LLC | Jose Manuel Vargas | info@nangiesconstruction.com | (714) 631 3014 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Narksuwan Electrical And Refrigeration | Narksuwan Preecha | — | (714) 865 7663 | HVAC | Riverside · Riverside County | — | — |
| Narr's Electrical And Handyman Service | Rogers Joseph Decoud | — | (951) 204 3875 | Electricians | Riverside · Riverside County | — | — |
| Narrow Path Engineering Incorporated | Forrest Daniel Greek | — | (951) 543 5903 | Other | Beaumont · Riverside County | — | — |
| Nas Acoustics INC | Ronald Charles Jr Mckenzie | — | (714) 300 5199 | Other | Riverside · Riverside County | — | — |
| Nata Construction INC | Horacio Navarro De La Torre | — | (951) 210 8537 | GC, remodel, ADU | Winchester · Riverside County | — | — |
| Nathan Ashbrook | Nathan Ashbrook | — | (909) 721 2693 | Other | Temecula · Riverside County | — | — |
| Nathan Jones | Nathan Jones | nathan.d.jones@gmail.com | (951) 990 0394 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Nathan Smith DBA Riverside Pool Supply | Riverside Pool Supply | — | (951) 680 1449 | Pool | Riverside · Riverside County | — | — |
| National Commercial Builders INC | William Jack Robison | — | (951) 302 8200 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| National Construction And Development | Dawn Lillian Yager | — | (909) 376 3567 | GC, remodel, ADU | Moreno Valley · Riverside County | — | — |
| National Fire Protection Test And Inspect INC | Betsey Orozco-Mosquera | — | (800) 966 4697 | Other | Temecula · Riverside County | — | — |
| National Garage Door Repair | National Garage Door Repair | — | (909) 485 6558 | Other | Riverside · Riverside County | — | — |
| National General Construction | Maverick Wade Cissell | — | (760) 519 0949 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| National Paving Company INC | Richard James Lindholm | — | (951) 369 1332 | Other | Riverside · Riverside County | — | — |
| National Refrigeration Services LLC | Juan Antonio Santos Ocampo | — | (714) 404 9946 | HVAC | Riverside · Riverside County | — | — |
| National Renovation INC | Paul Antwan De | — | (866) 661 6034 | HVAC | Corona · Riverside County | — | — |
| Nations Best Construction | Kevin Thomas Wilson | — | (951) 254 1570 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Nationwide Cabinetry | Nationwide Cabinetry | — | (626) 672 6703 | Other | La Quinta · Riverside County | — | — |
| Nationwide Painting Is Painting The Town | Robert Edward Robles | — | (951) 378 1614 | Windows, patio, painters | Riverside · Riverside County | — | — |
| Nationwide Surveying INC | Francisco Javier Sandoval | — | (213) 507 3613 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Nativa Construction | Osborne Brian Edwards | — | (760) 408 5365 | GC, remodel, ADU | Desert Hot Springs · Riverside County | — | — |