| Matthew Tai Ping Wong | Matthew Tai Ping Wong | — | (650) 533 5202 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Matthew Valle Construction | Matthew Edward Valle | — | (510) 860 8829 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Matthies Construction | Karl-johan Louis Matthies | — | (510) 259 8499 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Mauck Sheet Metal | Grant David Culpan | — | (510) 638 3607 | HVAC | Oakland · Alameda County | — | — |
| Maven Homes LLC | Srivasu Kakarla | — | (925) 621 9830 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Max's HVAC | Jeffrey Scott Bailon | — | (818) 571 6078 | HVAC | Newark · Alameda County | — | — |
| Maxx Window Works | Ernest Fernandez Jr Valdez | — | (559) 392 3560 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Mayco Commercial Construction | Jonathan Scott May | — | (925) 451 5295 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Mayfair Builder INC DBA Mayfair Carpentry | Chung Pui Li | — | (510) 396 8388 | Electricians | Fremont · Alameda County | — | — |
| Mayfair Construction DBA Center Court Sports | Alister Chia Ming Sun | — | (510) 988 1456 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Mayo Asphalt Milling | Gonzalez Ismael | — | (510) 648 0402 | Other | Fremont · Alameda County | — | — |
| Mazingira Gardening Services | Hamad Juma Hamad | — | (510) 282 3374 | Windows, patio, painters | Berkeley · Alameda County | — | — |
| Mazzoni Construction | Michael Chun Liu | — | (925) 236 0818 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Mazzoni Construction INC | Michael Chun Liu | — | (925) 236 0818 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Mb Builders & Developers INC | Cristian Oseguera Mendoza | — | (415) 579 7093 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Mb Complete Tree Care INC | Matthew James Bowman | — | (650) 334 4675 | Other | Berkeley · Alameda County | — | — |
| Mb Painting And Coatings | Mb Painting And Coatings | — | (510) 682 1777 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Mc Caffrey Brothers INC | Kevin Scott Mc Caffrey | — | (510) 455 0725 | GC, remodel, ADU | Albany · Alameda County | — | — |
| Mc Caffrey Custom Construction INC | John Paul Francis Mc Caffrey | — | (510) 872 2903 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Mc Carthy Electric Company | Kevin Michael Mc Carthy | — | (510) 526 6365 | Electricians | Berkeley · Alameda County | — | — |
| Mc Construction Builders LLC | Marco Antonio Jr Zuno | — | (510) 280 4406 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Mc Daniels Landscaping | Mc Daniels Landscaping | — | (510) 521 2634 | Windows, patio, painters | Alameda · Alameda County | — | — |
| Mc Dowell Construction | Michael Peirce Mc Dowell | — | (510) 703 1101 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Mc Fresh Painting INC | Miguel Antonio Castellanos Ulloa | — | (415) 577 1117 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Mc Gehee Construction | William Mitchell Mcgehee | — | (415) 254 9368 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Mc Guire And Hester | Bruce William Daseking | — | (510) 632 7676 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Mc Kay Irrigation Systems | Mc Kay Irrigation Systems | mckayirrigation@gmail.com | (510) 502 4825 | Windows, patio, painters | Berkeley · Alameda County | — | — |
| Mc Kenna Plastering | Mc Kenna Plastering | mckennaplasteringsf@gmail.com | (650) 450 2899 | Other | San Leandro · Alameda County | — | — |
| Mc Naney Plumbing | Mc Naney Plumbing | — | (925) 606 9372 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Mc Nely Construction Company | Douglas Martin Chastain | — | (510) 562 6300 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Mc Painting | Solis Mario Contreras | — | (925) 580 8566 | Windows, patio, painters | Pleasanton · Alameda County | — | — |
| Mc Plumbing INC | Jose Miguel Cervantes Lopez | — | (650) 678 4718 | Other | Newark · Alameda County | — | — |
| Mc Roofing | Cisneros Moises | — | (650) 576 5113 | Other roofers | Castro Valley · Alameda County | — | — |
| Mca Remodeling INC | Mitchell Christopher Alves | — | (408) 476 8773 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Mcbride Construction | John Andrew Mcbride | — | (510) 329 0954 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Mccall Works | Mccall Works | — | (510) 681 6356 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Mccormack Construction | Stephen Patrick Mccormack | — | (415) 724 8346 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Mccoy Insulation | Mccoy Insulation | — | (510) 332 2538 | Other | Oakland · Alameda County | — | — |
| Mcdunn Construction INC | Daniel Joseph Mc Dunn | — | (510) 710 1907 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Mcgee Legacy Electric | Mark Alvin Mcgee | — | (510) 677 1072 | Electricians | Oakland · Alameda County | — | — |