| Mason Mechanical Services | Robert Peter Mason | — | (415) 350 1371 | HVAC | Magalia · Butte County | — | — |
| Master Woodworks | Master Woodworks | — | (530) 613 5149 | GC, remodel, ADU | Magalia · Butte County | — | — |
| Matt Hoblin Construction | Steven Matthew Hoblin | — | (530) 521 5240 | GC, remodel, ADU | Chico · Butte County | — | — |
| Matt Webb Construction | Mathew Alex Webb | — | (530) 891 3351 | GC, remodel, ADU | Chico · Butte County | — | — |
| Matthew H Phillips Construction | Matthew Heinz Phillips | — | (530) 228 1902 | GC, remodel, ADU | Paradise · Butte County | — | — |
| Matthew Kevin Coppens | Matthew Kevin Coppens | — | (530) 965 1126 | Other | Chico · Butte County | — | — |
| Matthew Plourd DBA Premier Builders & Excavating | Premier Builders & Excavating | — | (530) 680 6822 | GC, remodel, ADU | Paradise · Butte County | — | — |
| Matthew Whittington | Matthew Whittington | — | (626) 377 7448 | GC, remodel, ADU | Chico · Butte County | — | — |
| Matthew's Roofing | Matthew Curtis Palade | — | (530) 876 8096 | Other roofers | Paradise · Butte County | — | — |
| Maximum Security Systems | Maximum Security Systems | — | (530) 589 5660 | Alarm and generators | Oroville · Butte County | — | — |
| Mc Clelland Air Conditioning INC | Barbara Anne Gilmore | — | (530) 891 6202 | HVAC | Chico · Butte County | — | — |
| Mc Coy's Tree Service | Alfred Joe Jr Mc Coy | info@mccoystreeservice.com | (530) 345 8811 | Tree | Oroville · Butte County | — | — |
| Mc Dowell Backhoe Tracking | Mc Dowell Backhoe Tracking | — | (510) 719 9382 | Other | Paradise · Butte County | — | — |
| Mc Mahon Pump Shop | Mc Mahon Pump Shop | — | (530) 520 1081 | Electricians | Chico · Butte County | — | — |
| Mc Manus Construction | Daniel Todd Mc Manus | — | (530) 277 0268 | GC, remodel, ADU | Oroville · Butte County | — | — |
| Mc Millan Tree Service | Scott Eric Mc Millan | — | (530) 894 7128 | Tree | Chico · Butte County | — | — |
| Mc Neill Construction | Matthew Clinton Mc Neill | — | (530) 521 2057 | GC, remodel, ADU | Chico · Butte County | — | — |
| Mcculloch Pool Construction | Derrick James Mcculloch | mccullochpoolconstruction@gmail.com | (707) 954 5280 | Pool | Chico · Butte County | — | — |
| Mccutcheon Remodeling | Mccutcheon Remodeling | — | (502) 758 4257 | GC, remodel, ADU | Chico · Butte County | — | — |
| Mchatton Flooring | Mchatton Flooring | — | (530) 321 8229 | Other | Chico · Butte County | — | — |
| Mcintosh Steel INC | Louis Iii Mcintosh | — | (530) 809 4544 | Other | Oroville · Butte County | — | — |
| Mclaughlin Construction And Consulting | Branden Chandler Mclaughlin | — | (530) 433 3030 | GC, remodel, ADU | Chico · Butte County | — | — |
| Mcs Electrical INC | Matthew Corey Smith | info@mcs-electrical.com | (530) 801 1478 | Electricians | Chico · Butte County | — | — |
| Medina's Electric | Medina Tomas | — | (530) 891 9200 | Electricians | Durham · Butte County | — | — |
| Medrano General Contracting | Manuel Rodriguez Medrano | — | (530) 534 7670 | GC, remodel, ADU | Oroville · Butte County | — | — |
| Medrano Land Development | Manuel Rodriguez Medrano | — | (530) 693 0514 | GC, remodel, ADU | Oroville · Butte County | — | — |
| Meier Construction | James Bingham Meier | — | (530) 228 5694 | GC, remodel, ADU | Chico · Butte County | — | — |
| Melinda Patterson | Melinda Patterson | — | (530) 321 1441 | Windows, patio, painters | Paradise · Butte County | — | — |
| Men Builders INC | Jordan Eduardo Mendiola Mercado | — | (530) 517 9801 | GC, remodel, ADU | Chico · Butte County | — | — |
| Meriwether Air Conditioning | Meriwether Air Conditioning | — | (530) 518 7724 | HVAC | Chico · Butte County | — | — |
| Metal Works | Kevin Michael Potes | support@metalworks.com | (530) 534 6266 | Other | Oroville · Butte County | — | — |
| Meticulous Quality Painting | Meticulous Quality Painting | meticulousqualitypainting@gmail.com | (530) 680 6388 | Windows, patio, painters | Chico · Butte County | — | — |
| Michael Marsey Construction | Michael Eugene Marsey | — | (530) 873 3806 | GC, remodel, ADU | Paradise · Butte County | — | — |
| Michael Mazzocco | Michael Mazzocco | — | (530) 342 4228 | Windows, patio, painters | Durham · Butte County | — | — |
| Michael Mulcahy | Michael Mulcahy | — | (530) 228 4949 | GC, remodel, ADU | Chico · Butte County | — | — |
| Michael Pickering Construction Incorporated | Michael Joseph Pickering | — | (530) 521 0710 | GC, remodel, ADU | Chico · Butte County | — | — |
| Michael T Shaw | Michael T Shaw | — | (530) 228 7117 | GC, remodel, ADU | Gridley · Butte County | — | — |
| Michael's Mechanical Heating & Air Conditioning | Rosendo Jason Torres | — | (530) 403 6300 | HVAC | Oroville · Butte County | — | — |
| Mid Valley Lath And Plaster | Mid Valley Lath And Plaster | — | (530) 680 0491 | Other | Chico · Butte County | — | — |
| Midway Plumbing INC | David Charles Cunningham | — | (530) 519 9172 | GC, remodel, ADU | Durham · Butte County | — | — |