| M J Gilbert Construction Co INC | Michael Jay Gilbert | — | (925) 294 8210 | Other | Ripon · San Joaquin County | — | — |
| M K Construction | Du Hyon D Pek | — | (510) 731 7217 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| M K T Tile | M K T Tile | — | (209) 747 2768 | Other | Lockeford · San Joaquin County | — | — |
| M P A Construction | Matthew Phillip Arnold | — | (510) 299 2158 | GC, remodel, ADU | Lathrop · San Joaquin County | — | — |
| M T Trim Co | Mikal Ronald Takahashi | — | (209) 810 0733 | Other | Lodi · San Joaquin County | — | — |
| M W Plumbing INC | Denise Marie Moulton | denny@mwplumbing.com | (209) 992 0461 | Other | Manteca · San Joaquin County | — | — |
| M3 Fire Protection Services | Ricky David Miller | — | (209) 331 3683 | Other | Lodi · San Joaquin County | — | — |
| M5 Construction | Adrian Scott Moreno | — | (209) 627 6930 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Machado Electric | Machado Daniel | — | (209) 404 8472 | Electricians | Tracy · San Joaquin County | — | — |
| Mack Builders INC | Richard Patrick Mac Dermott | — | (209) 830 9343 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Macochin Tile INC | Guadalupe Omar Zazueta Solis | — | (209) 740 7748 | Other | Lathrop · San Joaquin County | — | — |
| Made It Construction INC | Victor Manuel Melchor Mercado | — | (650) 814 4219 | Electricians | Tracy · San Joaquin County | — | — |
| Madera Flooring LLC | Alejandro Ortiz Madera | — | (209) 627 9843 | Other | Tracy · San Joaquin County | — | — |
| Mag Construction | Marcus Anthony Jr Gonzalez | — | (209) 275 8208 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Magallon Finished Carpentry | Magallon Finished Carpentry | — | (209) 898 9704 | Other | Stockton · San Joaquin County | — | — |
| Magana Plumbing | Magana Plumbing | — | (209) 484 7563 | Other | Tracy · San Joaquin County | — | — |
| Magcer Construction | Angel Gerardo Magana Hernandez | — | (209) 701 6329 | GC, remodel, ADU | Lathrop · San Joaquin County | — | — |
| Magma Chokos Concrete INC | Martin Ubaldo Juarez Diaz | — | (209) 818 5362 | Other | Manteca · San Joaquin County | — | — |
| Mags Construction | Miguel Angel Garcia Soria | — | (510) 376 9296 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Mahal Construction Service | Deepinder Singh Mahal | — | (408) 963 7702 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Mahlow Electric | Darin Lee Mahlow | — | (707) 494 0590 | Electricians | Lodi · San Joaquin County | — | — |
| Mainline Plumbing INC | Michael Avalos Gutierrez | — | (209) 838 1000 | Other | Escalon · San Joaquin County | — | — |
| Majorline Scaffold INC | Christian Eustace D'andrade | majorlinescaffold@gmail.com | (925) 915 5232 | Other | Lathrop · San Joaquin County | — | — |
| Malagon Painting | Malagon Painting | — | (209) 406 8418 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Malone Family Construction | Thomas R Malone | — | (925) 980 4545 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Mancuso Air Services | Ernest Gordon Jr Mancuso | — | (209) 598 3173 | HVAC | Stockton · San Joaquin County | — | — |
| Manny's Heating And Air INC | Manuel Rodolfo Diaz | — | (408) 661 1765 | HVAC | Tracy · San Joaquin County | — | — |
| Manny's Landscaping | Manny's Landscaping | — | (510) 593 5931 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Manny's Roofing INC | Juan Manuel Hernandez | — | (209) 986 7749 | Other roofers | Stockton · San Joaquin County | — | — |
| Mansoor Haidari | Mansoor Haidari | — | (510) 862 0154 | GC, remodel, ADU | Mountain House · San Joaquin County | — | — |
| Manteca Roofing Contractor & Roof Repair | Manteca Roofing Contractor & Roof Repair | info@mantecaroofing.com | (510) 254-9640 | Other roofers | Manteca · San Joaquin County | — | — |
| Manteca Roofing INC | Andrew Ramos | — | (209) 858 2424 | Other roofers | Stockton · San Joaquin County | — | — |
| Mantra Builders | Gikky Sharma | deepak@mantra-builders.com | (209) 880 9808 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Manufactured | Rascon Javier Vasquez | — | (209) 263 5753 | Other | Lodi · San Joaquin County | — | — |
| Manzanita Ventures INC | Suzanne Marie Candini | — | (209) 825 0825 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Manzo Brothers | Jose Alberto Manzo | jose@manzo-inc.com | (209) 645 9933 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Marble & Tile Master INC | Ismael Castro | — | (408) 436 0322 | Other | Tracy · San Joaquin County | — | — |
| Marcel Foucher | Marcel Foucher | — | (209) 601 2414 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Marchetti Services LLC DBA Marchetti Brush Services | Nick Marchetti | — | (209) 649 2342 | Other | Lodi · San Joaquin County | — | — |
| Marco Espinoza Masonry | Marco Espinoza Masonry | — | (209) 271 6291 | Other | Manteca · San Joaquin County | — | — |