| Norris General Restoration | Norris General Restoration | — | (559) 908 5741 | GC, remodel, ADU | Fresno · Fresno County | — | — |
| North Cal Flooring | North Cal Flooring | — | (408) 893 9700 | Other | Fresno · Fresno County | — | — |
| North Ranch Masonry | North Ranch Masonry | — | (559) 826 8741 | Other | Fresno · Fresno County | — | — |
| Northern Central Distributing INC DBA Central Distributing | Farshid Assemi | — | (559) 276 1500 | Other | Fresno · Fresno County | — | — |
| Northern Construction | Singh Veerpal | — | (559) 301 5656 | GC, remodel, ADU | Fowler · Fresno County | — | — |
| Northgate Construction Services | David Carl Bordwine | dave@contractordave.com | (559) 977 4050 | GC, remodel, ADU | Clovis · Fresno County | — | — |
| Northstar Framing INC | Patrick Francis Roberts | — | (559) 307 0819 | Other | Clovis · Fresno County | — | — |
| Northstar General INC | Timothy Lewis Simons | — | (559) 222 7903 | GC, remodel, ADU | Fresno · Fresno County | — | — |
| Northwest Exteriors | Northwest Exteriors | — | (916) 727-6717 | Windows, patio, painters | Fresno · Fresno County | — | — |
| Northwest Landscaping INC | Cortez Hernan | — | (559) 217 9338 | Windows, patio, painters | Fresno · Fresno County | — | — |
| Norwood Construction | Norwood Lon | — | (559) 325 1455 | GC, remodel, ADU | Clovis · Fresno County | — | — |
| Nova Service INC | Jonathan Daniel Dufer | — | (559) 291 5085 | Other | Fresno · Fresno County | — | — |
| Nova Tree Solutions LLC | Nova Tree Solutions LLC | — | (877) 512-4222 | Tree | Fresno · Fresno County | — | — |
| Nova West Energy Solutions INC | Roldan Andres | — | (559) 291 9900 | Electricians | Fresno · Fresno County | — | — |
| Novielli Painting | Frank Novielli | — | (559) 353 0056 | Windows, patio, painters | Sanger · Fresno County | — | — |
| Nu Flooring INC | Antonio Guzman Olmos | — | (559) 974 8675 | Other | Fresno · Fresno County | — | — |
| Nulick Fencing Company | James Ray Jr Nulick | — | (559) 960 7572 | Other | Clovis · Fresno County | — | — |
| Nuvole Company | David Lavern Gleason | — | (559) 612 3711 | GC, remodel, ADU | Fresno · Fresno County | — | — |
| Nxtgen Home Pool | Nxtgen Home Pool | — | (559) 473 3185 | Pool | Clovis · Fresno County | — | — |
| O P Flooring Services | Pallares-villegas Omar | — | (559) 579 9547 | Other | Fresno · Fresno County | — | — |
| O S O Construction INC | Tomas Avilez | — | (559) 595 4953 | GC, remodel, ADU | Orange Cove · Fresno County | — | — |
| O T General Contracting INC | Omar Orozco | — | (559) 618 6268 | GC, remodel, ADU | Sanger · Fresno County | — | — |
| O'neal Construction | Austin Daniel Oneal | — | (559) 326 8393 | GC, remodel, ADU | Sanger · Fresno County | — | — |
| Oasis Heating And Cooling INC | Christopher Alejandro Martinez | eduardk2007@yahoo.com | (559) 803 4076 | HVAC | Kerman · Fresno County | — | — |
| Oasis Refrigeration And Appliance | Oasis Refrigeration And Appliance | — | (559) 307 5691 | HVAC | Fresno · Fresno County | — | — |
| Obsidian Mosaic And Tile | Obsidian Mosaic And Tile | obsidianmosaic@gmail.com | (559) 417 0555 | Other | Fresno · Fresno County | — | — |
| Ochinero Electric INC | Vincent Mark Ochinero | micah@micahrich.com | (559) 706 7933 | Electricians | Fresno · Fresno County | — | — |
| Ockey Construction | Thomas Theo Ockey | — | (559) 341 7787 | Electricians | Fresno · Fresno County | — | — |
| Oehlschlaeger Plastering | Oehlschlaeger Plastering | — | (559) 696 6033 | Other | Clovis · Fresno County | — | — |
| Off The Wall Painting | Off The Wall Painting | — | (559) 696 8862 | Windows, patio, painters | Clovis · Fresno County | — | — |
| Official Pest Prevention | Official Pest Prevention | — | (559) 354-4947 | Pest, tile roofs | Fresno · Fresno County | — | — |
| Ogaz & Sons Flooring | Rosa Maria Ogaz | — | (559) 477 0942 | Other | Fowler · Fresno County | — | — |
| Ohana Construction Engineering INC | Andrew Anthony Pino | — | (559) 269 2532 | Other | Clovis · Fresno County | — | — |
| Ohanian's Drywall INC | Luke Randolph Ohanian | — | (559) 277 2946 | Other | Fresno · Fresno County | — | — |
| Ohanian's Painting INC | Luke Randolph Ohanian | — | (559) 375 0383 | Windows, patio, painters | Fresno · Fresno County | — | — |
| Ohm - Mega Electric | Mark Anthony Elizondo | — | (559) 994 6764 | Electricians | Auberry · Fresno County | — | — |
| Old Dirty Landscaper | Old Dirty Landscaper | support@webador.com | (559) 519 5569 | Windows, patio, painters | Fresno · Fresno County | — | — |
| Old Town Electric | Larry Dwayne Jr Garner | — | (559) 593 6896 | Electricians | Clovis · Fresno County | — | — |
| Old Town Tile | Old Town Tile | — | (559) 213 9370 | Other | Fresno · Fresno County | — | — |
| Olea Eng | Olea Eng | — | (559) 355 7359 | Other | Fresno · Fresno County | — | — |