| Lou Becker & Sons Construction | Louis Anthony Becker | — | (805) 304 8582 | GC, remodel, ADU | Olivehurst · Yuba County | — | — |
| M & A Commercial Flooring INC | Victoria Miguel Martinez | — | (530) 315 5936 | Other | Olivehurst · Yuba County | — | — |
| M And G's Siding | Rojas Marcelo Mora | — | (530) 434 2509 | Windows, patio, painters | Olivehurst · Yuba County | — | — |
| M G Construction | Michael Edward Graning | info@mgconstruction.com | (530) 788 3874 | GC, remodel, ADU | Smartsville · Yuba County | — | — |
| M3m Construction | Mora Martinez Marcos | — | (530) 216 6293 | GC, remodel, ADU | Marysville · Yuba County | — | — |
| Mac Plumbing | Mac Plumbing | — | (530) 315 6037 | Other | Olivehurst · Yuba County | — | — |
| Madero's Remodeling | Madero's Remodeling | — | (925) 351 3470 | GC, remodel, ADU | Olivehurst · Yuba County | — | — |
| Mallory Electric | Mallory Electric | — | (530) 673-3347 | Electricians | Yuba City · Yuba County | — | — |
| Malone Concrete Construction | Landon Ryan Malone | — | (530) 782 8800 | Other | Marysville · Yuba County | — | — |
| Marcum Drywall | Marcum Drywall | — | (916) 241 5196 | Windows, patio, painters | Plumas Lake · Yuba County | — | — |
| Marcus Air Conditioning | Marcus Air Conditioning | — | (916) 793 0168 | HVAC | Plumas Lake · Yuba County | — | — |
| Mark Rubel Construction | Rubel Mark Consruction | — | (530) 870 7339 | GC, remodel, ADU | Marysville · Yuba County | — | — |
| Mark Watson Drywall | Mark Watson Drywall | — | (530) 870 2583 | Other | Brownsville · Yuba County | — | — |
| Marshall Metal Arts | Marshall Metal Arts | — | (530) 305 3678 | Other | Brownsville · Yuba County | — | — |
| Martin Construction A Partnership | Charles Delbert Sr Wilson | — | (530) 632 0986 | GC, remodel, ADU | Dobbins · Yuba County | — | — |
| Marvelous Electrical & Electronics Co | Gharaee-kermani Rostam | — | (530) 742 7351 | Electricians | Marysville · Yuba County | — | — |
| Mathews Electric | Frederick J Mathews | — | (530) 742 2746 | Electricians | Marysville · Yuba County | — | — |
| Maverick Welding | Maverick Welding | — | (530) 635 5655 | Other | Browns Valley · Yuba County | — | — |
| Mc Power Electric LLC | Miguel Angel Cruz Sandoval | mcpowerelectric@outlook.com | (530) 574 3249 | Electricians | Marysville · Yuba County | — | — |
| Mcclure's Plumbing LLC | Conner Reed Mcclure | connermcclure@mccluresplumbing.com | (530) 913-2458 | Other | Browns Valley · Yuba County | — | — |
| Mccook Customs LLC | Dean Thomas Mc Cook | dean@mccookcustoms.com | (510) 470 2460 | GC, remodel, ADU | Browns Valley · Yuba County | — | — |
| Mcfadyen Construction | Brian Nathan Mc Fadyen | — | (530) 301 5492 | GC, remodel, ADU | Marysville · Yuba County | — | — |
| Mcferon Floor Covering | Mcferon Floor Covering | — | (530) 923 5540 | Other | Marysville · Yuba County | — | — |
| Mcintosh Equipment | Lon Scott Mcintosh | — | (530) 432 6550 | Other | Smartsville · Yuba County | — | — |
| Mcintosh Equipment | Mcintosh Equipment | — | (530) 277 6510 | Other | Smartsville · Yuba County | — | — |
| Mcy Tree INC | Arely Yesenia Pleitez | — | (800) 679 9749 | Tree | Marysville · Yuba County | — | — |
| Mechanical & Irrigation Solutions INC | Jaspreet Singh Thiara | — | (530) 674 7030 | Other | Marysville · Yuba County | — | — |
| Mescher Door Co | Gerald Steven| Mescher Jerry Steven Mescher | — | (530) 743 6085 | Other | Marysville · Yuba County | — | — |
| Meta Siding | Paramo Florentino Valdovinos | — | (530) 713 2665 | Windows, patio, painters | Marysville · Yuba County | — | — |
| Mg Floors | Mg Floors | — | (530) 415 1170 | Other | Marysville · Yuba County | — | — |
| Michael Bullivant | Michael Bullivant | — | (916) 995 2028 | Electricians | Marysville · Yuba County | — | — |
| Michael L Burns | Michael L Burns | — | (530) 870 6530 | GC, remodel, ADU | Olivehurst · Yuba County | — | — |
| Michael Paul Construction | Michael Richard Paul | — | (707) 486 8420 | GC, remodel, ADU | Smartville · Yuba County | — | — |
| Mid Valley Flooring | Mid Valley Flooring | — | (530) 415 4377 | Other | Marysville · Yuba County | — | — |
| Mike Russell Construction INC | Michael Douglas Russell | — | (530) 277 6923 | GC, remodel, ADU | Marysville · Yuba County | — | — |
| Modern Interior Floors | Modern Interior Floors | — | (916) 494 1962 | Other | Marysville · Yuba County | — | — |
| Mooc Electric | Mooc Danny | — | (916) 698 7391 | HVAC | Plumas Lake · Yuba County | — | — |
| Mpc Construction INC | Barajas Guillermo Lopez | — | (775) 253 1121 | GC, remodel, ADU | Olivehurst · Yuba County | — | — |
| Mpv Plastering | Mpv Plastering | — | (530) 434 0739 | Other | Marysville · Yuba County | — | — |
| Mrc Development INC | Michael Douglas Russell | mrc@mrcdevelopment.com | (530) 990 8783 | GC, remodel, ADU | Marysville · Yuba County | — | — |