| Merced Pmt LLC | Aaron Russell Whitaker | aaron@mercedpmt.com | (209) 777 1367 | GC, remodel, ADU | Winton · Merced County | — | — |
| Merced Pools INC | Mark Edward Torrence | mercedpoolsoffice@yahoo.com | (209) 564-0763 | Pool | Merced · Merced County | — | — |
| Merced Roofing | Luna Ruben | info@mercedroofingpro.com | (209) 722 7148 | Other roofers | Merced · Merced County | — | — |
| Merced Signs | Barrios Junelle Alvarez | mercedsigns@gmail.com | (209) 626 7199 | Other | Merced · Merced County | — | — |
| Merced Yosemite Realty | Terry Rae Ruscoe | — | (209) 722 5400 | Electricians | Merced · Merced County | — | — |
| Metcalf Builders | Metcalf Builders | — | (209) 628 3196 | GC, remodel, ADU | Merced · Merced County | — | — |
| Meza Concrete | Meza Concrete | — | (408) 892 6962 | Other | Gustine · Merced County | — | — |
| Meza Landscaping | Meza Landscaping | — | (209) 737 1097 | Windows, patio, painters | Los Banos · Merced County | — | — |
| Mg Construction | Luis A Martinez | info@mgconstruction.com | (831) 229 8945 | GC, remodel, ADU | Los Banos · Merced County | — | — |
| Michael A Jerzykowski | Michael A Jerzykowski | — | (760) 265 4753 | Other | Merced · Merced County | — | — |
| Michael Scott Ioane DBA We Are Renovation | We Are Renovation | — | (415) 484 9781 | GC, remodel, ADU | Atwater · Merced County | — | — |
| Mid Cal Mechanical Heating & Air Conditioning | Joseph A Cunha | — | (209) 587 0631 | HVAC | Los Banos · Merced County | — | — |
| Mid Cal Pipeline & Utilities INC | Tammy Lee Fausone | — | (209) 383 7473 | Other | Merced · Merced County | — | — |
| Mid Valley Patio Covers | Mid Valley Patio Covers | eben@eyebytes.com | (209) 230 3602 | Other | Atwater · Merced County | — | — |
| Mid Valley Tile | Mid Valley Tile | — | (209) 386 3894 | Other | Winton · Merced County | — | — |
| Mid-valley Shower Door | Mid-valley Shower Door | — | (209) 676 0380 | Windows, patio, painters | Merced · Merced County | — | — |
| Mig-l Construction INC | Steven Jerome Miguel | — | (209) 667 7443 | GC, remodel, ADU | Hilmar · Merced County | — | — |
| Miguel's Painting | Miguel's Painting | — | (209) 354 6581 | GC, remodel, ADU | Atwater · Merced County | — | — |
| Mike Gibbons Painting | Mike Gibbons Painting | — | (209) 658 5023 | Windows, patio, painters | Merced · Merced County | — | — |
| Mike Mc Cormick Drywall | Mike Mc Cormick Drywall | — | (209) 752 9547 | Other | Los Banos · Merced County | — | — |
| Mike Powell Drywall | Mike Powell Drywall | — | (209) 564 6098 | Other | Atwater · Merced County | — | — |
| Mike Stevens Construction | Michael Robert Stevens | — | (209) 756 1136 | GC, remodel, ADU | Merced · Merced County | — | — |
| Mill-tech General Engineering | Mill-tech General Engineering | — | (209) 675 3616 | Other | Merced · Merced County | — | — |
| Millan's Renovations | Millan's Renovations | — | (209) 628 9761 | GC, remodel, ADU | Winton · Merced County | — | — |
| Miracle Glass | Miracle Glass | — | (209) 628 4503 | Windows, patio, painters | Merced · Merced County | — | — |
| Miramontes Painting | Miramontes Painting | — | (209) 658 7156 | Windows, patio, painters | Merced · Merced County | — | — |
| Mirelez Construction | Daniel Stephan Mirelez | mirelezconstruction@gmail.com | (209) 631 1892 | GC, remodel, ADU | Atwater · Merced County | — | — |
| Mj Plumbing & Re-pipe INC | Jorge Luis Alayon Vasquez | — | (408) 614 5427 | Other | Los Banos · Merced County | — | — |
| Ml Concrete | Michael Ryan Linares | — | (209) 250 6502 | Other | Hilmar · Merced County | — | — |
| Mlt Construction INC | Martin Lee Tolleson | — | (209) 489 0057 | GC, remodel, ADU | Atwater · Merced County | — | — |
| Mnz Concrete | Mnz Concrete | — | (209) 354 1559 | Other | Atwater · Merced County | — | — |
| Modern Air Mechanical | Mark Alan Cauwels | — | (209) 722 1815 | HVAC | Merced · Merced County | — | — |
| Modular Solutions INC | Neftali Aguilar | — | (209) 862 2005 | GC, remodel, ADU | Atwater · Merced County | — | — |
| Mokha Real Estate | Mokha Real Estate | — | (209) 600-7353 | Property managers | Merced · Merced County | — | — |
| Molina Painting | Molina Painting | — | (408) 209 3372 | Windows, patio, painters | Los Banos · Merced County | — | — |
| Montes Concrete INC | Jose Angel Montes | — | (408) 886 1304 | Other | Los Banos · Merced County | — | — |
| Montes Contractors INC | Sealtiel Asai Montes Barragan | — | (209) 312 2957 | GC, remodel, ADU | Delhi · Merced County | — | — |
| Moore's Cleaning & Restoration | Moore's Cleaning & Restoration | — | (209) 777-2053 | Restoration | Merced · Merced County | — | — |
| Morfin Painting & Decorating | Morfin Painting & Decorating | — | (209) 827 4611 | Windows, patio, painters | Los Banos · Merced County | — | — |
| Morgan Construction | Stephen Byron Morgan | — | (209) 383 3060 | GC, remodel, ADU | Merced · Merced County | — | — |