| Mk Electric & Design INC | Mark Myron Kirkes | — | (209) 667 1922 | Electricians | Turlock · Stanislaus County | — | — |
| Mmc Construction | Melendez Cardona Marcelino | — | (209) 481 2620 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| Mo - Built INC | Joseph Patrick Disanto | — | (209) 606 5464 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Mo Cal Construction | Virinder Singh Grewal | — | (209) 538 6666 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Mo Construction | Morgan Charles Winslow | — | (760) 855 8253 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| Mo Landscape Contractor INC | Orozco Miguel | — | (408) 205 8417 | Windows, patio, painters | Patterson · Stanislaus County | — | — |
| Mobile Screens | Mobile Screens | — | (209) 523 3528 | Other | Modesto · Stanislaus County | — | — |
| Modern Heating / Air Conditioning Services INC | Paul Kojo Aidoo | — | (209) 613 8672 | HVAC | Modesto · Stanislaus County | — | — |
| Modern Touch Tile | Pena Edgar Lepe | — | (209) 499 5133 | Other | Keyes · Stanislaus County | — | — |
| Modesto Door & Window | Modesto Door & Window | — | (209) 550-0525 | Windows, patio, painters | Modesto · Stanislaus County | — | — |
| Modesto Executive Electric INC | Tori Lynn Simpson | estimates@modexelec.com | (209) 238 9898 | Electricians | Modesto · Stanislaus County | — | — |
| Modesto Kitchen And Bath INC | Steven Marshall Benson | — | (209) 526 4142 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Modesto Overhead Door INC | Gayle Eugene Wolf | — | (209) 577 3821 | Other | Modesto · Stanislaus County | — | — |
| Modesto Refrigeration Incorporated | Kevin Christopher Blair | — | (209) 524 0585 | HVAC | Salida · Stanislaus County | — | — |
| Modesto Sand And Gravel INC | Tracy Lynn Fernandes | — | (209) 545 4425 | Other | Modesto · Stanislaus County | — | — |
| Modesto Tent And Awning INC | Valk Robert | — | (209) 545 6150 | Other | Modesto · Stanislaus County | — | — |
| Moffitt Construction INC | William Henry Moffitt | — | (209) 404 0609 | GC, remodel, ADU | Salida · Stanislaus County | — | — |
| Monschein Industries INC | Karen Louise Monschein | sales@4mii.com | (209) 538 5100 | Other | Riverbank · Stanislaus County | — | — |
| Montanez's Concrete INC | David A Sr Montanez Reyes | — | (209) 652 4195 | Other | Ceres · Stanislaus County | — | — |
| Montano Flooring Services | Padilla Montano Griselda | — | (510) 876 2650 | Other | Salida · Stanislaus County | — | — |
| Monte Bello North Landscape INC | Pedro Antonio Llanos | — | (209) 493 0674 | Windows, patio, painters | Oakdale · Stanislaus County | — | — |
| Montgomery Wallcoverings | Montgomery Wallcoverings | — | (209) 988 1671 | Windows, patio, painters | Oakdale · Stanislaus County | — | — |
| Morales & Son's Framing | Alvarez Saul Morales | — | (209) 241 1207 | Other | Modesto · Stanislaus County | — | — |
| Morales Roofing | Salomon Zamora Morales | — | (510) 565 9630 | Other roofers | Patterson · Stanislaus County | — | — |
| More Than Just Framing | More Than Just Framing | — | (209) 495 7676 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| Moreno Brothers Underground Utility INC | Jorge Moreno Vargas | — | (209) 996 4630 | Other | Modesto · Stanislaus County | — | — |
| Moreno's Heating And Cooling Services INC | David Hurtado Moreno | — | (209) 576 0544 | HVAC | Modesto · Stanislaus County | — | — |
| Morgan Flooring | Morgan Flooring | — | (209) 602 2117 | Other | Oakdale · Stanislaus County | — | — |
| Morris Floors | Morris Floors | — | (209) 496 6561 | Other | Modesto · Stanislaus County | — | — |
| Moser Electrical | Ray Earl Moser | — | (209) 479 3924 | Electricians | Modesto · Stanislaus County | — | — |
| Motown Protection Systems | Amoto Punua Toilolo | — | (408) 771 7100 | Electricians | Modesto · Stanislaus County | — | — |
| Mountain Valley Pumping | Michael Wayne Harris | — | (209) 845 1800 | Other | Oakdale · Stanislaus County | — | — |
| Mozingo Construction INC | Doni Durel Mozingo | — | (209) 848 0160 | GC, remodel, ADU | Oakdale · Stanislaus County | — | — |
| Mr Fix It Handyman And Renovations LLC | Steven Daniel Jimenez | — | (209) 481 7613 | GC, remodel, ADU | Oakdale · Stanislaus County | — | — |
| Mr T'z Painting Co | Nathan Reuel Tanquary | mr.tzpaintingco@gmail.com | (209) 505 1620 | Windows, patio, painters | Modesto · Stanislaus County | — | — |
| Mr Z's Painting Service | Martin William Zuidervaart | — | (209) 668 3533 | Windows, patio, painters | Turlock · Stanislaus County | — | — |
| Mr. Michael Concrete | Mr. Michael Concrete | info@mrmichaelconcrete.com | (209) 408 2030 | Other | Modesto · Stanislaus County | — | — |
| Mtq Construction & Restoration | Montano Abel | — | (209) 735 1773 | GC, remodel, ADU | Crows Landing · Stanislaus County | — | — |
| Mts Process Engineering | Mark Anthony Tovar | — | (916) 995 8030 | Other | Turlock · Stanislaus County | — | — |
| Mungia's Construction | Mungia Sergio | — | (209) 814 3432 | GC, remodel, ADU | Riverbank · Stanislaus County | — | — |