| Mchale Sign Co INC | Patrick Edward Corey | — | (530) 223 2030 | Other | Redding · Shasta County | — | — |
| Mcnames Framing INC | Troy Steven Mc Names | — | (530) 227 7667 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Md Spangler | Md Spangler | — | (707) 888 8232 | Other | Redding · Shasta County | — | — |
| Mdcbr INC | Matthew David Carpentier | — | (530) 209 4793 | GC, remodel, ADU | Shingletown · Shasta County | — | — |
| Mel's General Construction | Melquiades Tinoco Villasenor | — | (530) 339 2787 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Mend A Bath | Gregory Neil Timms | — | (530) 215 9908 | Other | Redding · Shasta County | — | — |
| Menini Heating & Air Conditioning INC | Timothy Lee Menini | — | (530) 547 3306 | HVAC | Oak Run · Shasta County | — | — |
| Merles Painting | Merles Painting | — | (530) 357 2742 | Windows, patio, painters | Anderson · Shasta County | — | — |
| Merrills Construction | Dwayne Anthony Merrill | info@merrillsconstruction.com | (530) 356 0200 | GC, remodel, ADU | Cottonwood · Shasta County | — | — |
| Metolius Concrete Construction | Thomas Archie Carlson | — | (530) 604 0747 | Other | Redding · Shasta County | — | — |
| Meyers Earthwork INC | Jacob Carl Meyers | — | (530) 365 8858 | Other | Redding · Shasta County | — | — |
| Mga Construction Services INC | Micah Covert | — | (530) 355 5266 | GC, remodel, ADU | Cottonwood · Shasta County | — | — |
| Mge Concrete INC | Norris Daniel Aleman | — | (916) 513 8372 | Other | Anderson · Shasta County | — | — |
| Michael A Roberts DBA Michael A Roberts Construction | Michael Arthur Roberts | — | (530) 921 3746 | Other roofers | Redding · Shasta County | — | — |
| Michael Daniel Montanez | Michael Daniel Montanez | — | (831) 601 8571 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Michael Krueger Construction | Michael Lee Krueger | — | (530) 355 4454 | GC, remodel, ADU | Palo Cedro · Shasta County | — | — |
| Michael Patrick Mc Guire | Michael Patrick Mc Guire | — | (530) 210 6501 | Windows, patio, painters | Shasta Lake · Shasta County | — | — |
| Michael Petraitis Grading | Michael Petraitis Grading | — | (530) 949 1619 | Other | Redding · Shasta County | — | — |
| Michael Robert Smith | Michael Robert Smith | — | (530) 776 8193 | Other | Anderson · Shasta County | — | — |
| Michael Trathen Construction INC | Michael Wallis Trathen | — | (530) 223 0200 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Michael Woodward | Michael Woodward | — | (530) 953 8358 | Windows, patio, painters | Redding · Shasta County | — | — |
| Michael's Office Furnishings | Justin Michael Sherwood | — | (530) 221 3310 | Other | Anderson · Shasta County | — | — |
| Middleton Homes Corporation | Robert Franklin Iii Middleton | — | (949) 337 2536 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Mijangos Professional Landscape Services LLC | Yunior Alexander Mijangos | — | (530) 782 2507 | Windows, patio, painters | Redding · Shasta County | — | — |
| Mikala Corp DBA A-1 Forestry Group | Michael Joseph Bertell | — | (530) 221 9427 | Tree | Redding · Shasta County | — | — |
| Mikala Corp DBA A-1 Tree Service & Stump Removal | Michael Joseph Bertell | — | (530) 221 9427 | Tree | Redding · Shasta County | — | — |
| Mike Beyer | Mike Beyer | — | (530) 383 3906 | Electricians | Redding · Shasta County | — | — |
| Mike Boban Construction INC | Michael John Boban | — | (530) 223 4271 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Mike Brown Plumbing | Mike Brown Plumbing | — | (530) 604 1582 | Other | Palo Cedro · Shasta County | — | — |
| Mike Dahle General Contracting | Michael Earl Jr Dahle | — | (530) 472 0015 | GC, remodel, ADU | Whitmore · Shasta County | — | — |
| Mike Haven | Mike Haven | mike@mphcycles.com | (530) 949 8849 | Electricians | Anderson · Shasta County | — | — |
| Mike Mueck Construction | Michael Edmond Mueck | — | (530) 383 4999 | GC, remodel, ADU | Anderson · Shasta County | — | — |
| Mike Theodosis General Const | Mike Theodosis General Const | — | (530) 586 0523 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Mike's Carpet | Mike's Carpet | — | (530) 949 1761 | Other | Anderson · Shasta County | — | — |
| Mike's Heating & Air INC | Benjamin Hays Read | — | (530) 365 2060 | HVAC | Anderson · Shasta County | — | — |
| Miller Painting | Miller Painting | — | (550) 355 3153 | Windows, patio, painters | Redding · Shasta County | — | — |
| Miller Painting | Larry Edward Miller | — | (530) 945 0343 | Windows, patio, painters | Redding · Shasta County | — | — |
| Miracle Construction | Michael Anthony Maricle | — | (530) 360 0016 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Mission Construction | John Robert De Mers | — | (408) 469 7750 | GC, remodel, ADU | Shasta Lake · Shasta County | — | — |
| Mitchell Cox Construction | Todd Mitchell Cox | — | (530) 776 4062 | GC, remodel, ADU | Cottonwood · Shasta County | — | — |