| Mike Strunk | Mike Strunk | — | (707) 823 8899 | GC, remodel, ADU | Sebastopol · Sonoma County | — | — |
| Mike Ward Marble World | Mike Ward Marble World | — | (707) 544 3200 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Mike's Home Repair And Maintenance LLC | Michael Angelo Roghi | — | (707) 849 4381 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Mike's Painting | Mike's Painting | — | (707) 291 3834 | Windows, patio, painters | Petaluma · Sonoma County | — | — |
| Mike's Plumbing & Rooter | Michael Charles Ehrlich | — | (707) 953 2371 | Other | Windsor · Sonoma County | — | — |
| Mikes Welding INC | Michael Wayne Tomasek | — | (707) 762 8790 | Other | Penngrove · Sonoma County | — | — |
| Mila Construction INC | Cassidy John Mila | — | (707) 849 1456 | GC, remodel, ADU | Windsor · Sonoma County | — | — |
| Milano Mechanical INC | Daniel Thomas Milano | — | (707) 778 9339 | HVAC | Petaluma · Sonoma County | — | — |
| Miles Burke | Miles Burke | — | (707) 978 2978 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Miles Electric Incorporated | Jose Ernesto Ornelas | — | (707) 953 6998 | Electricians | Santa Rosa · Sonoma County | — | — |
| Miller Construction Company | Scott Brian Miller | — | (707) 337 8563 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Miller Custom Tile INC | Ryan Joseph Miller | — | (707) 548 3619 | Other | Santa Rosa · Sonoma County | — | — |
| Miller Dobbins Family INC DBA Climate Pro | Jeremy Cole Dobbins | — | (707) 569 9098 | Other | Cotati · Sonoma County | — | — |
| Miller Manufacturing Incorporated | Thomas Harold Miller | — | (707) 584 9528 | Other | Rohnert Park · Sonoma County | — | — |
| Millerick Sidewall Co | Ryan Patrick Millerick | — | (707) 318 2741 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Mills Tile | Mills Tile | — | (707) 595 1998 | Other | Rohnert Park · Sonoma County | — | — |
| Miltenberger Construction Co | Klaus Arthur Miltenberger | — | (707) 521 9995 | GC, remodel, ADU | Sonoma · Sonoma County | — | — |
| Minadeo Pool Construction | Joel Michael Minadeo | — | (707) 523 9687 | Pool | Valley Ford · Sonoma County | — | — |
| Mindful Landscapes | Mindful Landscapes | — | (707) 328 3837 | Windows, patio, painters | Forestville · Sonoma County | — | — |
| Miracle Method Of Sonoma & Marin | Brandon William Mccubbin | — | (707) 575 0313 | Other | Santa Rosa · Sonoma County | — | — |
| Miracle Tile Company | Modesto Jacinto Tah Esquivel | — | (415) 497 3193 | Other | Santa Rosa · Sonoma County | — | — |
| Miranda Painting | Miranda Painting | roberto@mirandapainting.com | (707) 623 2184 | Windows, patio, painters | Santa Rosa · Sonoma County | — | — |
| Miranda Woodworks INC | Pablo Miranda Perez | — | (707) 694 5472 | Other | Sonoma · Sonoma County | — | — |
| Mischa Steinbruck | Mischa Steinbruck | — | (707) 757 3923 | GC, remodel, ADU | Graton · Sonoma County | — | — |
| Mistah Seamless Gutters LLC | Luis Alberto Garcia Dominguez | mistahseamless@gmail.com | (707) 486 6247 | Other | Rohnert Park · Sonoma County | — | — |
| Mister Plumber | Mister Plumber | — | (707) 478 0128 | Other | Penngrove · Sonoma County | — | — |
| Mister Sparky | James Irving Kubel | — | (415) 342 0419 | Electricians | Petaluma · Sonoma County | — | — |
| Mitchell L Garcia | Mitchell L Garcia | — | (209) 329 3111 | Other | Rohnert Park · Sonoma County | — | — |
| Mitchell Landscapes Incorporated | Owen Joaquin Mitchell | — | (415) 717 6214 | Windows, patio, painters | Penngrove · Sonoma County | — | — |
| Mito General Construction | Gumecindo Garcia Gonzales | — | (707) 541 8657 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Mix Garden INC | Michael John Kopetsky | — | (707) 396 0716 | Windows, patio, painters | Healdsburg · Sonoma County | — | — |
| Mj Shower Doors | Maurilio Jesus Lopez-Parra | — | (707) 241 6263 | Windows, patio, painters | Petaluma · Sonoma County | — | — |
| Mk Tile & Stone | Mk Tile & Stone | — | (707) 393 0087 | Other | Santa Rosa · Sonoma County | — | — |
| Mkh Construction | Mark Kristian Hoyal | — | (707) 249 0024 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Mkm Group INC | Matthew Kenneth De La Montanya | — | (415) 453 6300 | Other | Petaluma · Sonoma County | — | — |
| Mlk Builders INC | Michael Laurence Klopp | — | (707) 889 1014 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| Mm General Builders INC | Jose Guillermo Martinez Araujo | kdestudio.info@gmail.com | (707) 849 1716 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Moctezuma Construction | Moctezuma Ricardo Olvera | — | (707) 318 3545 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |
| Modern Summit Roofing Contractors INC | Jason Joshua Gay | service@modernsummitroofing.com | (707) 291 8680 | Other roofers | Petaluma · Sonoma County | — | — |
| Moeller Construction | Kenneth Arthur Moeller | — | (707) 508 7785 | GC, remodel, ADU | Santa Rosa · Sonoma County | — | — |