| Mountain Construction | Robert Clive Cooper | glenng@mountain-construction.com | (913) 207-5937 | GC, remodel, ADU | El Dorado Hills · El Dorado County | — | — |
| Mountain Drywall INC | James Patrick Lee | — | (530) 621 3406 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| Mountain Electric | Weston John Frailey | — | (530) 306 3442 | Electricians | Camino · El Dorado County | — | — |
| Mountain High Painting | Mountain High Painting | — | (530) 644 5232 | Windows, patio, painters | Pollock Pines · El Dorado County | — | — |
| Mountain Oak Development Corporation | Christopher Wade Davy | — | (916) 500 3551 | GC, remodel, ADU | Rescue · El Dorado County | — | — |
| Mountain Roofing Systems | Donnie Marshall O'neal | — | (530) 647 0653 | Other roofers | Diamond Springs · El Dorado County | — | — |
| Mountain Top Electric | Ethan Kenneth Rocheleau | mtelectric.info@gmail.com | (530) 813 4344 | Electricians | Placerville · El Dorado County | — | — |
| Moxie Mechanical INC | Vernon Royal Morrison | — | (916) 370 1236 | HVAC | Cameron Park · El Dorado County | — | — |
| Mr Sign | Noah Allen Schwartzman | — | (530) 389 2643 | Other | Shingle Springs · El Dorado County | — | — |
| Msk Construction | Mike Scott Keck | matt@mskconstruction.com | (530) 416 1855 | GC, remodel, ADU | South Lake Tahoe · El Dorado County | — | — |
| Mst Construction | Mart Stephen Thurmond | — | (916) 890 6548 | GC, remodel, ADU | Shingle Springs · El Dorado County | — | — |
| Mt View Lawn & Garden | Mt View Lawn & Garden | — | (818) 730 3097 | Windows, patio, painters | South Lake Tahoe · El Dorado County | — | — |
| Mtj Construction Innovation | Joshua Richard Kelley | — | (916) 740 5506 | GC, remodel, ADU | Cameron Park · El Dorado County | — | — |
| Mud Brothers INC | Cole Elliott Mc Gowan | mudbrothersfl@gmail.com | (916) 220 6833 | Other | Rescue · El Dorado County | — | — |
| Munn Construction Co Incorporated | David Victor Munn | — | (530) 417 0898 | GC, remodel, ADU | Garden Valley · El Dorado County | — | — |
| Muratori Construction | Joseph Guido Muratori | — | (916) 607 8428 | GC, remodel, ADU | El Dorado Hills · El Dorado County | — | — |
| Murphy's Touch INC | Daniel Maurice Murphy | paul@murphystouchla.com | (530) 626 6789 | Other | Camino · El Dorado County | — | — |
| Murray Excavating INC | Marc Harold Murray | — | (916) 798 0108 | Other | Latrobe · El Dorado County | — | — |
| Murray Plumbing | Murray Plumbing | service@murrayplumbing.com | (530) 499 2223 | Other | Placerville · El Dorado County | — | — |
| Murray Sheds INC | Mark Lee Murray | — | (530) 622 7433 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| Muscle Up Roofing | Joshua Darrell Smith | — | (530) 333 7643 | Other roofers | Garden Valley · El Dorado County | — | — |
| Mw Construction LLC | Michael Nathaneal| Worth Mike Nathanel Worth | — | (530) 453 0100 | GC, remodel, ADU | Shingle Springs · El Dorado County | — | — |
| Myers And Sons Drywall INC | Jeffrey Russell Myers | — | (530) 626 9400 | Other | Placerville · El Dorado County | — | — |
| Myers Landscape | Myers Landscape | — | (916) 939 5023 | Windows, patio, painters | El Dorado Hills · El Dorado County | — | — |
| N A R Construction | Nicholas Anthony Roach | — | (916) 847 7406 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| N H Construction | Richard Terry Powell | — | (209) 642 0237 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| N R S Construction Building And Management | Noel Adam Seccombe | — | (530) 391 4621 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| N S Construction | Neil William Swanton | — | (775) 291 3156 | GC, remodel, ADU | Somerset · El Dorado County | — | — |
| N-hance | Thomas Slingsby Mann | — | (530) 333 3273 | GC, remodel, ADU | Cameron Park · El Dorado County | — | — |
| Nadler Construction | Ronald Allen Nadler | — | (650) 222 9668 | GC, remodel, ADU | Cameron Park · El Dorado County | — | — |
| Nail It Roofing INC | Aaron Daniel Meyer | office@nail-it-roofing.com | (530) 677 5032 | Other roofers | Diamond Springs · El Dorado County | — | — |
| Nalevia Wallcovering | Nalevia Wallcovering | — | (916) 939 9156 | Other | El Dorado Hills · El Dorado County | — | — |
| Nate's Asphalt Seal Coating | Nate's Asphalt Seal Coating | — | (530) 644 0410 | Other | Placerville · El Dorado County | — | — |
| Nathan Knox Carpentry | Nathan Knox Carpentry | — | (530) 417 3151 | Other | Somerset · El Dorado County | — | — |
| National Food Equipment | National Food Equipment | gkazan@nationalfoodequipment.com | (530) 391 5240 | HVAC | Placerville · El Dorado County | — | — |
| Nationwide Lifts | Alexander John Joseph Martin | — | (916) 933 3550 | Other | El Dorado Hills · El Dorado County | — | — |
| Nature's Palette | Nature's Palette | — | (916) 599 5147 | Other | El Dorado Hills · El Dorado County | — | — |
| Navajo Building Specialties | Navajo Building Specialties | — | (530) 672 1180 | GC, remodel, ADU | Shingle Springs · El Dorado County | — | — |
| Ncge | Terry Allen Noble | — | (916) 917 2772 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| Nec Corporation | Ricky Stewart Nelson | — | (888) 956 6226 | Electricians | Placerville · El Dorado County | — | — |