| Mcvay Heritage Construction LLC | Aaron Ray Mcvay | — | (707) 322 4903 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Md Builder | Md Builder | — | (707) 396 3485 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Md Homes And Design | Michael William Donnelly | — | (805) 377 0852 | GC, remodel, ADU | Santa Rosa Valley · Sonoma County | — | — |
| Mechanical Pool Repair | Richard Brian Gustin | mechanicalpoolrepair@gmail.com | (415) 259 8643 | Pool | Petaluma · Sonoma County | — | — |
| Medel Painting | Medel Painting | — | (760) 499 8020 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Medina's Drywall | Medina's Drywall | — | (707) 828 6083 | Other | Santa Rosa · Sonoma County | — | — |
| Medrano Home Services | Edgar R Medrano | — | (707) 304 3286 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| Meirik Design Landscaping | Meirik Design Landscaping | — | (707) 536 6048 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Mello Construction | Gerald Ernest Mello | — | (707) 695 5464 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Melo Willard Tabudlo DBA Dreamt Design And Build | Dreamt Design And Build | — | (415) 812 0356 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Mendenhall Electric | Carroll Mark Mendenhall | joe@mendenhallelectric.com | (636) 293-7222 | Electricians | Forestville · Sonoma County | — | — |
| Mendoza Construction | Miguel Barajas Mendoza | — | (707) 859 3646 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Mendoza Painting And Pressure Washing | Mendoza Painting And Pressure Washing | — | (707) 318 0621 | Windows, patio, painters | Rohnert Park · Sonoma County | — | — |
| Menero Landscaping | Menero Landscaping | — | (707) 694 1439 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Menghini Floor Covering | Menghini Floor Covering | — | (707) 433 7614 | Other | Healdsburg · Sonoma County | — | — |
| Mentch Finish Carpentry | Mentch Finish Carpentry | — | (707) 236 2229 | Other | Santa Rosa · Sonoma County | — | — |
| Merciari Construction Design | Anthony Davis Merciari | — | (707) 477 6174 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Mertens Drilling | Steven Paul Jr Mertens | samantha@mertensdrilling.com | (751) 570 6692 | Other | Petaluma · Sonoma County | — | — |
| Meserve Botanical | Meserve Botanical | — | (707) 935 3911 | Windows, patio, painters | Glen Ellen · Sonoma County | — | — |
| Metal Roof Systems INC | Jaan Edward Schoon | — | (707) 529 1847 | Other roofers | Santa Rosa · Sonoma County | — | — |
| Metela Woodworking | Metela Woodworking | — | (707) 579 9303 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Method Pro Painting | Method Pro Painting | — | (707) 889 5809 | Windows, patio, painters | Rohnert Park · Sonoma County | — | — |
| Mg Construction | Mario Rafael Gutierrez | info@mgconstruction.com | (707) 293 5323 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Mg Electric | Magana Govea David | — | (707) 343 5611 | Electricians | Santa Rosa · Sonoma County | — | — |
| Mg Masonry INC | Granados Margarito Perez | — | (707) 495 1094 | Other | Santa Rosa · Sonoma County | — | — |
| Mg Prime General Construction | Marco Antonio Garcia Leon | — | (707) 772 9053 | GC, remodel, ADU | Boyes Hot Springs · Sonoma County | — | — |
| Mg Remodeling Contractor | Ramos Mauro Gongora | — | (707) 775 9440 | GC, remodel, ADU | Cotati · Sonoma County | — | — |
| Mgr Plumbing INC | Miguel Angel Galvan | — | (707) 694 4859 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Mh Plus INC | Mark William Hutter | — | (805) 680 0800 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Micah Bonacorso Plumbing | Micah Bonacorso Plumbing | — | (707) 217 0527 | Other | Santa Rosa · Sonoma County | — | — |
| Michael A Martin | Michael A Martin | — | (415) 225 8690 | GC, remodel, ADU | Petaluma · Sonoma County | — | — |
| Michael A Romeo Construction | Michael Anthony Romeo | — | (707) 536 3803 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Michael A Swaney General Contractor | Michael A Swaney General Contractor | — | (707) 328 8108 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Michael Bicheler | Michael Bicheler | — | (707) 480 1998 | Electricians | Petaluma · Sonoma County | — | — |
| Michael Burdette Painting | Michael Burdette Painting | — | (707) 481 0949 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Michael Christy Painting | Michael Christy Painting | — | (707) 246 0409 | Windows, patio, painters | Rohnert Park · Sonoma County | — | — |
| Michael Coggins | Michael Coggins | — | (707) 769 1270 | Pool | Petaluma · Sonoma County | — | — |
| Michael D Haworth | Michael D Haworth | — | (707) 292 8166 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Michael Edmunson | Michael Edmunson | — | (707) 486 9611 | Electricians | Sebastopol · Sonoma County | — | — |
| Michael Gleeson Contractor | Michael Gleeson Contractor | — | (707) 483 0086 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |