| Madrid Construction | Isac Joaquin Madrid Vargas | madridconstru@gmail.com | (530) 510 8602 | GC, remodel, ADU | Anderson · Shasta County | — | — |
| Mahan Arbor Works | Brandon Michael Mahan | — | (530) 262 2410 | Other | Redding · Shasta County | — | — |
| Maintenance Solutions | Maintenance Solutions | — | (530) 243 8990 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Majestic Builders Of Redding INC | Christine Ann Schwerdt | — | (530) 378 0803 | GC, remodel, ADU | Anderson · Shasta County | — | — |
| Make Works Engineering | Jacob Aaron Krohn | — | (530) 710 8545 | Other | Redding · Shasta County | — | — |
| Makwood Construction | Paul Myron Wood | info@makwoodconstruction.com | (530) 560 5892 | GC, remodel, ADU | Palo Cedro · Shasta County | — | — |
| Mammoth Welding LLC DBA Brett Woolley | Brett Gerald Woolley | — | (530) 515 8801 | Other | Cottonwood · Shasta County | — | — |
| Mandache's Painting | Mandache's Painting | — | (530) 921 2072 | Windows, patio, painters | Redding · Shasta County | — | — |
| Mandinas Cabinets LLC | Scott Vincent Jones | info@mandinascabinets.com | (530) 365 8108 | Other | Anderson · Shasta County | — | — |
| Mann Construction Company | Darrel Robert Mann | debbie@mannconstruction.com | (530) 638 6396 | Other | Redding · Shasta County | — | — |
| Mann Plumbing | Mann Plumbing | — | (530) 547 3489 | Other | Palo Cedro · Shasta County | — | — |
| Manske Construction | Jason James Manske | — | (805) 610 0923 | GC, remodel, ADU | Anderson · Shasta County | — | — |
| Marczak Masonry | Marczak Masonry | — | (408) 355 4058 | Other | Redding · Shasta County | — | — |
| Mark Alan Crumpton | Mark Alan Crumpton | — | (530) 351 3636 | HVAC | Redding · Shasta County | — | — |
| Mark Behnke Construction | Mark Steven Behnke | — | (530) 547 3039 | GC, remodel, ADU | Palo Cedro · Shasta County | — | — |
| Mark Edward Kinsman | Mark Edward Kinsman | — | (530) 276 0043 | Other | Redding · Shasta County | — | — |
| Mark L Coulter Construction INC | Mark Lane Coulter | — | (530) 524 3945 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Mark Mc George Construction INC | Mark Alan Mc George | — | (530) 243 4454 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Martens Electric | John Paul Martens | — | (530) 945 8199 | Electricians | Anderson · Shasta County | — | — |
| Marx Construction | Charles H Marx | — | (530) 223 3425 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Massengale Construction | James Lee Massengale | — | (209) 988 2829 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Mast Construction LLC | Paul Mast | — | (530) 201 2340 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Mast Roofing INC | Samuel Jay Mast | — | (530) 339 0509 | Other roofers | Redding · Shasta County | — | — |
| Master Skill Tree Service INC | Jordan Jessiel Delgado Bonilla | — | (530) 709 6191 | Tree | Redding · Shasta County | — | — |
| Master's Touch Drywall INC | Matthew Jon Whitney | — | (530) 228 6695 | Other | Redding · Shasta County | — | — |
| Matt Legerton Construction | Matthew Curtis Legerton | — | (530) 209 2028 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Matthew Young Construction | Matthew James Young | — | (530) 605 9042 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Maxwell Crest INC | Austin Oneil Nickens | — | (530) 776 3020 | Other | Anderson · Shasta County | — | — |
| May & Lugo Framing | Craig Richard David Lugo | — | (530) 242 3930 | Other | Redding · Shasta County | — | — |
| Mays Construction | David Bruce Mays | — | (530) 949 1137 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Mb Electrical | Matthew Allen Brown | — | (707) 572 8337 | Electricians | Redding · Shasta County | — | — |
| Mc Donald Earthworks | Mc Donald Earthworks | — | (530) 623 7217 | Other | Bella Vista · Shasta County | — | — |
| Mc Entire Landscaping INC | James Lee Mc Entire | debbie@mcentirelandscaping.com | (530) 245 4590 | Windows, patio, painters | Redding · Shasta County | — | — |
| Mc Gee Construction | Bradley Sean Mc Gee | mmcgee@mcgeeconstruction.com | (530) 474 4878 | GC, remodel, ADU | Shingletown · Shasta County | — | — |
| Mc Jasm INC DBA Murray Plumbing & Fire | Micheal Rooger Stanberry | — | (530) 241 6915 | HVAC | Redding · Shasta County | — | — |
| Mc Williams Painting | Mc Williams Painting | — | (530) 604 1176 | Windows, patio, painters | Anderson · Shasta County | — | — |
| Mccanless Excavating And Construction | Mc Canless Kelly | — | (707) 498 5253 | Other | Bella Vista · Shasta County | — | — |
| Mccarley & Son Painting Industrial Coatings INC | Susan Carol Landa | — | (530) 275 6776 | GC, remodel, ADU | Shasta Lake · Shasta County | — | — |
| Mcfall Paint | Mcfall Paint | — | (530) 410 9475 | Windows, patio, painters | Redding · Shasta County | — | — |
| Mchale Electric | Garrett Scott Champney | — | (530) 917 9599 | Electricians | Redding · Shasta County | — | — |