| M Hernandez Home Improvement | M Hernandez Home Improvement | — | (805) 794 7426 | GC, remodel, ADU | Fillmore · Ventura County | — | — |
| M J Construction Co | Jambazian Mardes | — | (818) 363 1558 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| M L Hall Contracting | Matthew L Hall | — | (805) 584 9018 | Electricians | Santa Susana · Ventura County | — | — |
| M L M Plumbing | M L M Plumbing | — | (805) 797 5143 | Other | Ojai · Ventura County | — | — |
| M L S Roofing INC | Jesus Morales Hurtado | jesus@mlsroofing.com | (805) 276 0441 | Other roofers | Thousand Oaks · Ventura County | — | — |
| M Maintenance Construction Clean - Up | Salvador Jr Plascencia | — | (805) 485 1267 | Other | Oxnard · Ventura County | — | — |
| M P Construction | Miguel Angel Parra | — | (805) 840 9979 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| M P M Construction Services | John Robert Mitchell | — | (805) 732 8318 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| M P X Construction INC | Martin Edward Prideaux | — | (805) 535 5385 | GC, remodel, ADU | Oak View · Ventura County | — | — |
| M Q P INC | Padilla Martin | — | (818) 294 1188 | Windows, patio, painters | Camarillo · Ventura County | — | — |
| M R All Landscape Services | Miguel Angel Ramos Linares | — | (805) 290 8534 | Windows, patio, painters | Ventura · Ventura County | — | — |
| M Rosas Electric Control Systems | Rosas-gongora Manuel | — | (805) 320 4627 | Electricians | Ojai · Ventura County | — | — |
| M S M Builder INC | Marc Shay Mirabal | — | (310) 743 6700 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| M T Cline Construction | Mark Terry Cline | — | (805) 431 2013 | GC, remodel, ADU | Ojai · Ventura County | — | — |
| M T H Construction INC | Michael Bernard Sondermann | — | (805) 484 5010 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| M T M Building | M T M Building | — | (805) 825 7534 | GC, remodel, ADU | Oak View · Ventura County | — | — |
| M T Portenstein | M T Portenstein | — | (909) 725 9743 | GC, remodel, ADU | Oak View · Ventura County | — | — |
| M T S Shutter & Blind Installations | Michael Thomas Shepard | — | (805) 482 6677 | Other | Camarillo · Ventura County | — | — |
| M V Cohen Construction | Matityahu Victor Cohen | — | (805) 338 5544 | Electricians | Thousand Oaks · Ventura County | — | — |
| M V Landscape | M V Landscape | joe@mvlandscape.com | (805) 485 4098 | Other roofers | Oxnard · Ventura County | — | — |
| M W B Construction | Matthew Ward Boland | — | (805) 405 2343 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| M W Electric | Mark Allen Walsh | — | (805) 297 6251 | Electricians | Simi Valley · Ventura County | — | — |
| M W Faust General Contractor | M W Faust General Contractor | — | (805) 220 5889 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| M3 Roofing | Martinez Bryan | — | (805) 843 5791 | Other roofers | Oxnard · Ventura County | — | — |
| M4 Builders | Maegan Mary Michie | — | (805) 794 9467 | GC, remodel, ADU | Ojai · Ventura County | — | — |
| Mac Kerron Construction | Thomas Stuart Mac Kerron | — | (805) 207 7469 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Macario Morales Painting | Macario Morales Painting | — | (805) 443 2610 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| Macarthur Construction | Andrew James Macarthur | — | (805) 603 7668 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Macias Roofing INC | Padilla Sergio Macias | info@maciasroofinginc.com | (805) 974-9041 | Other roofers | Oxnard · Ventura County | — | — |
| Mackey Electric | Thomas William Mackey | — | (818) 254 5472 | Electricians | Simi Valley · Ventura County | — | — |
| Mad Era Design + Build INC | Sandra Lizbeth Alvarez | — | (805) 628 6087 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Made In The Shade Construction | Jeffrey Scott Wilson | — | (661) 212 9593 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Madera Floors By Alex Lopez | Madera Floors By Alex Lopez | — | (805) 259 7224 | Other | Ventura · Ventura County | — | — |
| Madison Appliance Heating & Air Conditioning | Madison Wydell | — | (805) 488 2034 | HVAC | Oxnard · Ventura County | — | — |
| Madsen Construction | Paul Jeffrey Madsen | — | (805) 407 3819 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Madsen Landscape Services | Michael Christopher Madsen | — | (805) 216 0522 | Windows, patio, painters | Camarillo · Ventura County | — | — |
| Maestros Concrete INC | Aaron Valencia | — | (805) 844 6376 | Other | Oxnard · Ventura County | — | — |
| Mag Construction | Paul Peter Iii Magallanes | — | (805) 372 1984 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Maganas Plumbing Services INC | Malco Magana | — | (805) 535 8207 | Other | Piru · Ventura County | — | — |
| Magic Builders LLC | Travis Lee Caputo | — | (805) 208 6579 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |