| Mcgrath Rentcorp | Steven Matthew Hatch | — | (925) 606 9200 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Mcguire And Hester - Power Engineering Construction Company | Guire And Hester Mc | — | (510) 632 7676 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Mching Construction | Marvin Rodriguez Chingcuangco | — | (510) 517 6756 | GC, remodel, ADU | San Lorenzo · Alameda County | — | — |
| Mclean Construction | David Scott Mclean | — | (510) 486 1917 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Mcm Plumbing & Heating Corp DBA Mcm Plumbing | Sean Patrick Mcmullen | — | (415) 589 9278 | HVAC | San Leandro · Alameda County | — | — |
| Mcmahon Chris General Contractor | Mcmahon Chris General Contractor | — | (510) 381 6028 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Mcnulty Mechanical Incorporated | Steven Mark Wirth | — | (209) 571 5775 | HVAC | Livermore · Alameda County | — | — |
| Mcs Awnings | Mcs Awnings | — | (510) 925 7246 | Other | Hayward · Alameda County | — | — |
| Md Gardening And Landscaping Services | Miguel Angel Antonio Diaz | — | (510) 575 6462 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Mda Services LLC DBA H&r Plumbing And Rooter | Rafael M Munoz | — | (510) 760 2231 | Other | San Leandro · Alameda County | — | — |
| Mdesign Remodeling INC | Sion Shabo | info@mdesignremodeling.com | (510) 672 8266 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Mdm Electric | Jose Leon Jr Delgadillo | — | (510) 821 8560 | Other roofers | San Leandro · Alameda County | — | — |
| Mec Custom Builders INC | Marcos Esparza | — | (510) 772 1667 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Medina Marble And Granite | Medina Marble And Granite | — | (510) 682 4469 | Other | Hayward · Alameda County | — | — |
| Medrano Construction Corp | Marcos Tototzintle | info@medranoconstruction.com | (415) 806 6337 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Mega Electric & P V INC | Man Sung Park | — | (510) 504 9696 | Electricians | Alameda · Alameda County | — | — |
| Megaton Electric | Trinidad Jose | jt@megatonelectric.com | (510) 220 3665 | Electricians | Oakland · Alameda County | — | — |
| Mehari General Engineering Contractor | Mehari General Engineering Contractor | — | (510) 355 7766 | Other | Oakland · Alameda County | — | — |
| Meijia Construction LLC | Jingjia Ren | — | (510) 560 6681 | Electricians | Fremont · Alameda County | — | — |
| Meir Hadida | Meir Hadida | — | (510) 809 6584 | Other | Alameda · Alameda County | — | — |
| Meja INC | Manuel Sanchez | — | (510) 785 5140 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Mel's Roofing INC | Cabrales Melquiades Cervantes | — | (510) 228 5247 | Other roofers | Livermore · Alameda County | — | — |
| Melanio Yambao Jr | Melanio Yambao Jr | — | (925) 980 7485 | Other | Livermore · Alameda County | — | — |
| Melchor Anthony Santiago | Melchor Anthony Santiago | — | (510) 359 0028 | Other | Hayward · Alameda County | — | — |
| Melgar & Associates Mechanical INC | Serbio Tulio Melgar | — | (925) 583 5088 | HVAC | Livermore · Alameda County | — | — |
| Melgar's Painting | Melgar's Painting | — | (510) 575 2658 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Melvin Construction | Mark Edmund Melvin | — | (415) 123 4567 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Mena Construction | Jose Alonso Hernandez Torres | — | (510) 303 5615 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Mendez Construction | Mendez Gomez Diego | interested@domainmarket.com | (510) 560 8097 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Mendez Electrical & Building | Erick Dunior Mendez | — | (510) 816 8997 | Electricians | San Leandro · Alameda County | — | — |
| Mendoza Painting Solutions | Mendoza Painting Solutions | mendoza.painting.ca@gmail.com | (510) 228 8765 | Windows, patio, painters | Oakland · Alameda County | — | — |
| Meng Jiao Jin | Meng Jiao Jin | — | (415) 770 8181 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Menlo Technology Services | Joe Silveira Martins | — | (510) 797 7305 | Other | Livermore · Alameda County | — | — |
| Meraki & Aaa Construction INC | Bustillo Reynaldo Vasquez | — | (650) 295 9402 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Merkouris Construction INC | Merkouris Angelo | — | (650) 740 0054 | Electricians | Castro Valley · Alameda County | — | — |
| Merrigan Construction | Padraic Daniel Merrigan | mike@merriganconstruction.com | (925) 484 1506 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Merryman Construction | James Shaw Merryman | — | (925) 846 1460 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Mertens Carpentry | Mertens Carpentry | — | (510) 604 9632 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| Meryl & Miller LLC | Meryl Rose Phillips-Miller | meryl.e.miller@gmail.com | (510) 394 8328 | Electricians | Alameda · Alameda County | — | — |
| Mesr Construction | Mynor Estuardo Sanchez Ralda | — | (510) 812 0365 | GC, remodel, ADU | Oakland · Alameda County | — | — |