| Miramar Marble & Granite INC | Inocencio Cienega | — | (510) 429 8065 | Other | Union City · Alameda County | — | — |
| Miramontes Electric | Miramontes Eduardo | — | (510) 846 2102 | Electricians | Oakland · Alameda County | — | — |
| Miranda's General Construction | Miranda Huerta Joel | — | (510) 709 8647 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Miranda's Paint Works INC | Paulino Mirando Salgado | — | (408) 515 6179 | Windows, patio, painters | Fremont · Alameda County | — | — |
| Mireles Construction INC | Jose Luis Mireles Cervantes | construmireles@gmail.com | (415) 301 8347 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Misco | David Daniel Misco | — | (510) 205 8107 | Other | Castro Valley · Alameda County | — | — |
| Mission City Rebar INC | Cathy Jean Parshall | — | (925) 449 6999 | Other | Livermore · Alameda County | — | — |
| Mission Electric Company | Jeffrey Allen Kositch | — | (510) 657 4460 | Electricians | Fremont · Alameda County | — | — |
| Mission Peak Construction INC | John Shao-chung Wong | — | (510) 894 3828 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Mission Valley Construction | Philip Stanley Jr Velles | — | (510) 661 0311 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Mister Sparky | Christopher Eric Zanetta | — | (510) 581 7705 | Electricians | Fremont · Alameda County | — | — |
| Mj Alfaro Painting INC | Marvin Jose Alfaro Amaya | — | (559) 293 0427 | Windows, patio, painters | Hayward · Alameda County | — | — |
| Mj Home Builders LLC | Michael James Birbeck | info@mjhomebuilders.com | (510) 918 2344 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Mj Repairs & Installations LLC | Michael Thomas Pugh | — | (279) 444 2632 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Mj12 Corp | Jessica Kim | — | (408) 510 2500 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Ml Construction | Linda Min Ling Lau | hello@mlconstruction.com | (925) 667 6368 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Mmt Electric | Sailosi Faone Taunaholo | administracion@mmtelectric.com | (510) 825 2513 | Electricians | Union City · Alameda County | — | — |
| Mmw Construction INC | Kam Kuen Wong | — | (510) 915 3072 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Mnm Builders INC | Shaun Michael Morrison | — | (510) 567 3980 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| Mnm Construction | Noel Adriano Rocero | — | (650) 580 8874 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Mo Paving | Mo Paving | — | (510) 914 9557 | Other | Oakland · Alameda County | — | — |
| Mobility 4U | Mobility 4U | — | (510) 581 6759 | Other | Castro Valley · Alameda County | — | — |
| Moda Elevator LLC | Andrew James Baird | info@modaelevator.com | (510) 777 9050 | Other | Alameda · Alameda County | — | — |
| Model Plumbing | Model Plumbing | cdo59@sbcglobal.net | (925) 487 9361 | Other | Pleasanton · Alameda County | — | — |
| Modelo Design Build Co | Andy Kin Ho | — | (510) 812 1889 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Modern Build Construction LLC | Bahadur Amiri | — | (510) 359 8434 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Modern Creations | Modern Creations | info@modern-creations.com | (510) 414 7335 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Modern Electric | Jose Jd Duran | — | (510) 509 5309 | Electricians | San Leandro · Alameda County | — | — |
| Modern Green Constructions INC | Vaknin Sagy | — | (415) 900 8069 | Electricians | San Leandro · Alameda County | — | — |
| Modern Heating And Air Conditioning | Modern Heating And Air Conditioning | — | (707) 552 5166 | HVAC | Oakland · Alameda County | — | — |
| Modern Hydronics | Modern Hydronics | — | (510) 239 8844 | HVAC | Oakland · Alameda County | — | — |
| Modern Railway Systems | George Joseph Furnanz | — | (510) 748 1870 | Electricians | Alameda · Alameda County | — | — |
| Modern Railway Systems Herzog Technologies INC A Joint Venture | Technologies INC Herzog | — | (510) 748 1870 | Electricians | Alameda · Alameda County | — | — |
| Modern Tile | Modern Tile | — | (510) 869 9205 | Other | Castro Valley · Alameda County | — | — |
| Modern View Electric | Juan Jose Munguia | — | (510) 367 8516 | Electricians | Oakland · Alameda County | — | — |
| Modhome Construction Corp | Alan Suilin Lee | — | (510) 379 8979 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Modl Construction | Denisson Nascimento Barreto | — | (818) 932 4256 | GC, remodel, ADU | Emeryville · Alameda County | — | — |
| Modutecture INC | Robert Joe Simmons | — | (650) 444 4440 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Mohajer Construction | Keyvan Karimi Mohajer | — | (650) 716 7576 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Mohn Construction | Kevin Jonathon Mohn | — | (408) 209 8251 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |