| Local Craft Construction | Jacob Allen Pruitt | — | (530) 616 1221 | GC, remodel, ADU | Portola · Plumas County | — | — |
| Long Valley Electric LLC | Charles Russell Coughlin | — | (530) 616 5293 | Electricians | Cromberg · Plumas County | — | — |
| Longhorn Electric | Lane Paul Labbe | — | (530) 777 1962 | Electricians | Quincy · Plumas County | — | — |
| Loranger Construction INC | Thomas Shane Loranger | — | (530) 258 6310 | GC, remodel, ADU | Chester · Plumas County | — | — |
| Lost Sierra Electric | Jeffrey Charles Train | lostsierraelectric@gmail.com | (530) 830 8149 | Electricians | Blairsden · Plumas County | — | — |
| Lost Sierra Log Works LLC | Bryan Richard Plocki | bryan@lostsierralogworks.com | (530) 927 7937 | GC, remodel, ADU | Quincy · Plumas County | — | — |
| Lost Sierra Ventures LLC | Thomas Lyn Shores | info@lostsierraventures.com | (530) 214 0619 | GC, remodel, ADU | Blairsden · Plumas County | — | — |
| Mancino Door & Window Inc. | Mancino Door & Window Inc. | — | (626) 334-2525 | Windows, patio, painters | Glendora · Plumas County | — | — |
| Mark Nelson | Mark Nelson | — | (530) 816 2471 | Other | Chester · Plumas County | — | — |
| Marquette Construction | Michael Stuart Marquette | — | (530) 258 7960 | GC, remodel, ADU | Portola · Plumas County | — | — |
| Maverick Electric Heating & Air | Maverick Electric Heating & Air | — | (916) 655-7744 | HVAC | Plumas Lake · Plumas County | — | — |
| Mc Elwain Construction | Frank John Mc Elwain | — | (530) 836 2486 | Electricians | Graeagle · Plumas County | — | — |
| Mccoy Construction LLC | Michael Richard Hodge | — | (530) 412 2830 | GC, remodel, ADU | Portola · Plumas County | — | — |
| Mcgarr Excavation INC | Ronald Philip Mc Garr | — | (530) 832 5959 | Other | Portola · Plumas County | — | — |
| Michael White Construction | Michael Paul White | — | (530) 260 5656 | GC, remodel, ADU | Chester · Plumas County | — | — |
| Midnight Sun Septic Plus | Midnight Sun Septic Plus | — | (530) 927 8718 | Other | Clio · Plumas County | — | — |
| Mike Hauso Eng | Mike Hauso Eng | — | (530) 927 9827 | Other | Portola · Plumas County | — | — |
| Mike's Custom Concrete LLC | Michael Edward Reed | — | (530) 375 7411 | Other | Taylorsville · Plumas County | — | — |
| Miles Huggins | Miles Huggins | — | (530) 832 0128 | Windows, patio, painters | Portola · Plumas County | — | — |
| Miravalle Construction | Robert C Jr Miravalle | — | (530) 283 2788 | GC, remodel, ADU | Quincy · Plumas County | — | — |
| Mohawk Valley Construction | Ross Thaddeus Compton | — | (530) 249 5994 | GC, remodel, ADU | Blairsden · Plumas County | — | — |
| Mountain Great Builders Construction Corp | Gonzalez Manuel | — | (503) 572 6302 | GC, remodel, ADU | Portola · Plumas County | — | — |
| Mountain Home Maintenance Construction & Management | John O'leary Roach | — | (530) 836 1280 | GC, remodel, ADU | Blairsden · Plumas County | — | — |
| Mountain Surf Creative Engineering | Kevin Scott Simpson | — | (828) 242 2230 | Other | Quincy · Plumas County | — | — |
| Mountain Top Remodeling | Mountain Top Remodeling | — | (530) 616 0507 | GC, remodel, ADU | Quincy · Plumas County | — | — |
| Mountain View Plumbing | Mountain View Plumbing | — | (530) 249 9233 | Other | Blairsden · Plumas County | — | — |
| Mouser Brothers Enterprises | Jeremy Luke Mouser | — | (530) 283 9001 | GC, remodel, ADU | Quincy · Plumas County | — | — |
| Mr E Tree Service LLC | Evan Conrad Hasse | — | (530) 616 8219 | Other | Meadow Valley · Plumas County | — | — |
| N Little Electric | Nicholas David Little | — | (775) 432 9333 | Electricians | Portola · Plumas County | — | — |
| Newell Construction | Robert Newell Krinsky | — | (530) 284 6846 | GC, remodel, ADU | Taylorsville · Plumas County | — | — |
| Nick's Heating And Refrigeration INC | Nickolas Matthew Boyd | — | (530) 283 3672 | HVAC | Quincy · Plumas County | — | — |
| Nieman Metal Works LLC | Chase Anton Nieman | nieman3c@yahoo.com | (530) 263 8330 | Other | Quincy · Plumas County | — | — |
| North Bay Heating And Cooling | North Bay Heating And Cooling | — | (707) 235 3259 | HVAC | Cromberg · Plumas County | — | — |
| North Lake Forestry | Patrick Ryan Blount | info@mysite.com | (530) 364 1775 | Tree | Beckwourth · Plumas County | — | — |
| North Sierra Homes | North Sierra Homes | — | (530) 394 0920 | GC, remodel, ADU | Graeagle · Plumas County | — | — |
| Northern River Builders Inc. | Christopher Elwin Ii Isaacson | — | (530) 448 3819 | GC, remodel, ADU | Graeagle · Plumas County | — | — |
| Olah Construction | Gregory Lamar Olah | — | (530) 258 4810 | GC, remodel, ADU | Chester · Plumas County | — | — |
| Oran Morrison | Oran Morrison | — | (530) 524 8660 | GC, remodel, ADU | Quincy · Plumas County | — | — |
| Pacific Design Construction | Jean Marc Nieminen | — | (530) 457 7479 | GC, remodel, ADU | Portola · Plumas County | — | — |
| Paramount Homebuilders INC | Robert Douglas Nally | — | (530) 249 1957 | GC, remodel, ADU | Portola · Plumas County | — | — |