| Lydick Company | Douglas Paul Lydick | — | (775) 771 5906 | GC, remodel, ADU | Ojai · Ventura County | — | — |
| Lyle Lavietes Landscape Contractor INC | Lyle Scott Lavietes | — | (805) 584 6444 | Windows, patio, painters | Simi Valley · Ventura County | — | — |
| Lynch Custom Concrete INC | Ryan Thomas Lynch | — | (805) 732 4346 | Other | Somis · Ventura County | — | — |
| Lynn Construction INC | Dave Isaac Lynn | — | (805) 207 8122 | GC, remodel, ADU | Ojai · Ventura County | — | — |
| Lyons Remodels | Lyons Remodels | — | (805) 797 0273 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| M & A Maintenance INC | Martin Avalos Magana | — | (805) 732 0839 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| M & B Services INC | Martin Jose Alvarez | — | (805) 487 6700 | Other | Oxnard · Ventura County | — | — |
| M & J Painting INC | Juan Christian Peralta Hernadez | — | (213) 531 1296 | Windows, patio, painters | Oxnard · Ventura County | — | — |
| M & M Building Associates | James Bryan Mcdonald | — | (805) 895 2714 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| M & M Stairs | Mark Anthony Michaels | — | (805) 520 5858 | Other | Simi Valley · Ventura County | — | — |
| M & R Landscape Construction INC | Ronald Garcia | — | (805) 529 4779 | Windows, patio, painters | Moorpark · Ventura County | — | — |
| M & S Associates INC | Mark Gregory Appel | — | (805) 498 3371 | Other | Newbury Park · Ventura County | — | — |
| M & T Concrete INC | Patrick Allen Waid | — | (805) 487 3871 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| M - 20 Construction | Shawn Evan Reynolds | — | (805) 340 7007 | Other | Santa Paula · Ventura County | — | — |
| M - Tile INC | Casano Peter | — | (818) 968 9635 | Other | Simi Valley · Ventura County | — | — |
| M 2 Investments INC DBA Pacific Coast Re-bath | Michael James Storms | — | (805) 288 6779 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| M A C General Contractors | Angel Granados | angel@macgeneralcontractors.com | (818) 581 1476 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| M A N Construction | Matthew Alexander Nestor | — | (805) 558 0083 | Electricians | Moorpark · Ventura County | — | — |
| M A P Tree & Landscape Service | Miguel Angel Pineda | — | (805) 443 4115 | Windows, patio, painters | Thousand Oaks · Ventura County | — | — |
| M And J Video Communications INC | Judith Helene Spilka | — | (818) 706 0352 | Other | Westlake Village · Ventura County | — | — |
| M B Construction | Michael Wayne Bunde | — | (805) 389 3114 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| M B Electrical Service | Mitchell Ernest Bussear | — | (805) 377 3442 | Electricians | Camarillo · Ventura County | — | — |
| M B Heating & Air | M B Heating & Air | — | (818) 518 4844 | HVAC | Simi Valley · Ventura County | — | — |
| M B M Construction INC | John H| Khaki Houshang Jonathan Khaki | — | (818) 991 1000 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| M B Remodeling | M B Remodeling | — | (805) 766 6221 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| M C N Construction INC | Mark Christian Nestlerode | — | (805) 376 2079 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| M D & D Pools | Michael Gary Anderson | micah@micahrich.com | (805) 857 0580 | Pool | Newbury Park · Ventura County | — | — |
| M D M Construction | Michael David Maruhnich | — | (805) 559 9764 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| M D Renovation Contractor INC | Michael Lee Rovner | — | (805) 584 1213 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| M D Structural Contractors | Mary Catherine Doran | — | (805) 630 7342 | Other | Thousand Oaks · Ventura County | — | — |
| M Drill | M Drill | — | (805) 649 5067 | Other | Ojai · Ventura County | — | — |
| M G A Drywall Company | Gastelum Miguel | — | (805) 607 9896 | Other | Oxnard · Ventura County | — | — |
| M G A General Construction | Miguel Angel Gonzalez Arellano | — | (805) 612 6800 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| M G C Builder | M G C Builder | — | (805) 680 5778 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| M G M Electric | Matthew Gary Majobian | — | (805) 746 2027 | Electricians | Simi Valley · Ventura County | — | — |
| M G M Landscape | M G M Landscape | — | (805) 844 5628 | Windows, patio, painters | Thousand Oaks · Ventura County | — | — |
| M G Partners INC | Matthew Walter Grode | information@mgpartners.com | (805) 383 7500 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| M G Plumbing INC | Matthew David Goetze | — | (805) 657 8464 | Other | Thousand Oaks · Ventura County | — | — |
| M G Taylor Equipment INC | Meredith Gregory Taylor | — | (805) 524 3229 | Other | Fillmore · Ventura County | — | — |
| M G Tree Service | Gonzalez Mario | — | (805) 844 8998 | Tree | Somis · Ventura County | — | — |