| Mora Builders INC | Jose Manuel Mora Martinez | — | (805) 415 5461 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Morales Landscaping & Tree Service INC | Morales Jesus Aguilar | — | (805) 210 0795 | Windows, patio, painters | Moorpark · Ventura County | — | — |
| Morales Waterproofing Systems | Morales Waterproofing Systems | — | (805) 236 1750 | Other | Oxnard · Ventura County | — | — |
| Moran N Construction | Noel Geffroy Moran | — | (805) 641 3400 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Moreira Contractor | Moreira Contractor | — | (818) 970 5761 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Moreno's Electrical Service | Jose Hector Moreno | — | (805) 415 3274 | Electricians | Oxnard · Ventura County | — | — |
| Morillon INC | Modesto Nicolas Morillon-guido | — | (805) 988 2080 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| Morris Excavating | Morris Excavating | — | (805) 207 5117 | Other | Oak View · Ventura County | — | — |
| Morton Construction | Heath Eric Morton | interested@domainmarket.com | (805) 876 5308 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Morton Construction Services INC | Heath Eric Morton | impallari@gmail.com | (805) 876 5308 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Moss Brothers Landscape | Moss Brothers Landscape | — | (805) 628 3780 | Windows, patio, painters | Ventura · Ventura County | — | — |
| Moss Electric | Mark Christopher Moss | — | (805) 254 6677 | Electricians | Ventura · Ventura County | — | — |
| Most Valuable Painting | Most Valuable Painting | — | (805) 844 0227 | Windows, patio, painters | Fillmore · Ventura County | — | — |
| Mother Tree Construction | John Patrick De Surra | mothertreeconstruction@gmail.com | (805) 798 2309 | GC, remodel, ADU | Ojai · Ventura County | — | — |
| Moti Lal Balyan | Moti Lal Balyan | — | (818) 462 3105 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Mountain Plumbing & Heating | Mountain Plumbing & Heating | interested@domainmarket.com | (805) 390 2540 | HVAC | Ventura · Ventura County | — | — |
| Mountain Time Builders | Andrew Clyde Stocking | — | (530) 933 1440 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| Mountain West Construction Group | Vladimir Ian Kytlica | — | (805) 523 2548 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Mov Electrical | Ofer Pinhas Lifshitz | — | (818) 961 7428 | Electricians | Thousand Oaks · Ventura County | — | — |
| Mpk Solutions | Mpk Solutions | — | (805) 585 0720 | Other | Ventura · Ventura County | — | — |
| Mr Baby Proofer | Mr Baby Proofer | — | (818) 763 3900 | Other | Simi Valley · Ventura County | — | — |
| Mr Cool Heating & Cooling INC | Richard Eugene Diederichs | — | (805) 794 5712 | HVAC | Oak View · Ventura County | — | — |
| Mr Homes | Ravi Ramakrishnan | — | (805) 601 5123 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Mr Macs Painting | Mr Macs Painting | — | (805) 377 2825 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Mr Mister | Jerome Howard Migdol | — | (818) 700 2665 | Other | Thousand Oaks · Ventura County | — | — |
| Mr Mold Inspection | Mr Mold Inspection | mrmoldinspection@gmail.com | (877) 660-0092 | Inspectors | Ventura · Ventura County | — | — |
| Mr Painting INC | Francisco Marco Ramos | — | (805) 240 6938 | Windows, patio, painters | Camarillo · Ventura County | — | — |
| Mr Roofer Co | Adolfo Fabian Tamayo | — | (805) 407 4905 | Other roofers | Oxnard · Ventura County | — | — |
| Mr Rooter Plumbing | Miguel Angie Loreto | — | (805) 801 6718 | Other | Ventura · Ventura County | — | — |
| Mr Tempo Plumbing INC | Melendrez Everardo Camarillo | — | (805) 727 6266 | Other | Fillmore · Ventura County | — | — |
| Mrc Remodeling INC | Jesus Medina Monreal | — | (805) 217 2964 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Mrc Rock & Sand LLC | Mile Grbic | — | (805) 524 5569 | GC, remodel, ADU | Santa Paula · Ventura County | — | — |
| Mrg Concrete Cutting | Guzman Manny Ruvalcaba | — | (661) 607 6839 | Other | Newbury Park · Ventura County | — | — |
| Mrp Construction INC | Mario Rene Posadas | — | (805) 279 6557 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Mse Corporation DBA Martins Rooter & Plumbing | Estrada Martin Solis | — | (805) 276 5516 | Other | Oxnard · Ventura County | — | — |
| Msi Construction | Richard Lee Vasso | — | (805) 901 3924 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Mt Bros General Building INC | Rolando Medina | — | (805) 509 7233 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Mtw Construction INC | Rimon Edwar Hayek | — | (805) 666 5053 | Electricians | Ventura · Ventura County | — | — |
| Mtz & Son Concrete Pumping INC | Arturo Martinez | — | (805) 331 4692 | Other | Ventura · Ventura County | — | — |
| Mulholland Pool And Spa INC | Jeremy Jon Kerns | — | (818) 597 0310 | Pool | Westlake Village · Ventura County | — | — |