| M R W And Associates | Jerry M Martinez | — | (323) 253 4272 | GC, remodel, ADU | Monterey · Monterey County | — | — |
| M Rizzo Landscaping And Maintenance INC | Mark Anthony Rizzo | — | (408) 593 7644 | Windows, patio, painters | Salinas · Monterey County | — | — |
| M S Electrical Services | Michael Robert Scholler | — | (831) 210 4547 | Electricians | Salinas · Monterey County | — | — |
| M V B Electric | Michael Vincent Bruno | — | (831) 402 1221 | Electricians | Salinas · Monterey County | — | — |
| M V Plumbing | M V Plumbing | — | (831) 240 2143 | Other | Salinas · Monterey County | — | — |
| M W Painting | M W Painting | — | (831) 277 5678 | GC, remodel, ADU | Monterey · Monterey County | — | — |
| M X Golf Renovations INC | Verdeja Manuel Perez | — | (310) 948 9614 | Windows, patio, painters | Monterey · Monterey County | — | — |
| M. Hale Construction | Matthew Alexander Hale | — | (805) 441 7689 | GC, remodel, ADU | Carmel · Monterey County | — | — |
| M.g. Drywall Inc. | Miguel Angel Guzman | — | (831) 235 0322 | Other | Salinas · Monterey County | — | — |
| M2 Construction | Andrew David Cahill | — | (209) 216 6979 | GC, remodel, ADU | Seaside · Monterey County | — | — |
| M3b INC | Michael Kane Miller | — | (831) 324 5532 | GC, remodel, ADU | Pacific Grove · Monterey County | — | — |
| Mac Builder Construction LLC | Milton Alexander Cruz Molina | — | (831) 277 5142 | GC, remodel, ADU | Marina · Monterey County | — | — |
| Mac Donald Construction | Michael Kent Mac Donald | — | (831) 594 2447 | GC, remodel, ADU | Del Rey Oaks · Monterey County | — | — |
| Macaluso Electric INC DBA Vertex Media Systems | George Michael Macaluso | — | (831) 392 1402 | Electricians | Seaside · Monterey County | — | — |
| Macias Landscaping INC | Mario Macias-Villarreal | — | (831) 905 3247 | Windows, patio, painters | Seaside · Monterey County | — | — |
| Maclean Construction | Robert Ian Maclean | — | (831) 236 2322 | GC, remodel, ADU | Salinas · Monterey County | — | — |
| Madrid Handyman | Madrid Handyman | — | (831) 710 2266 | GC, remodel, ADU | Salinas · Monterey County | — | — |
| Madrone Construction | Ryan William Bulich | scott@madroneconstruction.com | (541) 788-8737 | GC, remodel, ADU | Del Rey Oaks · Monterey County | — | — |
| Madsen Electric | Ryen Jade Brook Madsen | — | (831) 320 2440 | Electricians | Carmel Valley · Monterey County | — | — |
| Magallon Building Construction | Magallon Joel | — | (831) 229 3661 | GC, remodel, ADU | Pacific Grove · Monterey County | — | — |
| Mahoney Masonry INC | Michael Scott Mahoney | — | (831) 659 0363 | Other | Carmel Valley · Monterey County | — | — |
| Mahoney's Painting | Mahoney's Painting | — | (831) 402 1789 | Windows, patio, painters | Marina · Monterey County | — | — |
| Mainline Construction | Samuel Antone Duckworth | — | (831) 277 4110 | Other | Marina · Monterey County | — | — |
| Make It Drain Specialist LLC | Cameron Austin Maye | — | (209) 568 9550 | Other | Carmel · Monterey County | — | — |
| Malachi Boyce Construction INC | Malachi Clinton Boyce | — | (831) 620 9617 | GC, remodel, ADU | Carmel · Monterey County | — | — |
| Mammoth Construction | Muson Jesse | — | (831) 917 4803 | GC, remodel, ADU | Seaside · Monterey County | — | — |
| Mangiapane Electric | Gino Ben Mangiapane | — | (831) 595 5854 | Electricians | Monterey · Monterey County | — | — |
| Mangold Property Management- Dre Lic.#01226102 | Mangold Property Management- Dre Lic.#01226102 | info@mangoldproperties.com | (831) 372-1338 | Property managers | Monterey · Monterey County | — | — |
| Manzanarez Landscapes LLC | Mariah Nicole Manzanarez | — | (831) 236 4084 | Windows, patio, painters | Marina · Monterey County | — | — |
| Maplewood Landscaping INC | Rafael Mojica-Manriquez | — | (408) 348 3507 | Windows, patio, painters | Castroville · Monterey County | — | — |
| Marc Bordonaro Construction INC | Bordonaro Marc | — | (831) 596 1042 | GC, remodel, ADU | Carmel · Monterey County | — | — |
| Marc Erickson Plastering INC | Marc Thomas Erickson | marcericksonplastering@comcast.net | (831) 521 0464 | Other | Salinas · Monterey County | — | — |
| Marc Fanning Construction | Marc Timothy Jr Fanning | — | (831) 206 3182 | GC, remodel, ADU | Soledad · Monterey County | — | — |
| Marc Johnson Welding | Marc Johnson Welding | — | (831) 214 3266 | Other | King City · Monterey County | — | — |
| Marco Flores Electric | Marco Antonio Flores | mfelectric10@gmail.com | (831) 241 2198 | Electricians | Monterey · Monterey County | — | — |
| Marina Auto Stereo & Window Tinting | Marina Auto Stereo & Window Tinting | — | (831) 384-9600 | Alarm and generators | Seaside · Monterey County | — | — |
| Marina Express Plumbing | Marina Express Plumbing | — | (831) 883 8001 | Other | Marina · Monterey County | — | — |
| Marina Plumbing & Hardware INC DBA Marina Plumbing & Heating | Lanette Marie Smith | — | (831) 384 8206 | HVAC | Marina · Monterey County | — | — |
| Mario Bros Plumbing INC | Salgado Mario Garcia | — | (831) 345 7751 | Other | Royal Oaks · Monterey County | — | — |
| Mark Cristofalo & Company | Mark Thomas Cristofalo | office@markcristofalohomes.com | (831) 241 4214 | GC, remodel, ADU | Sand City · Monterey County | — | — |