| Mode Renovation LLC | Ryan Patrick Keene | — | (714) 701 6372 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Model Like Painting | Model Like Painting | — | (909) 322 4022 | Windows, patio, painters | Mira Loma · Riverside County | — | — |
| Modern 20 Construction | Andres Luis Garcia | — | (760) 698 2348 | GC, remodel, ADU | Indio · Riverside County | — | — |
| Modern Awnings INC | Palacios Luis Hernandez | — | (951) 217 2648 | Other | Corona · Riverside County | — | — |
| Modern Cabinetry | Modern Cabinetry | — | (760) 641 5777 | Other | Thousand Palms · Riverside County | — | — |
| Modern Coast | Uriel Mario Huerta | — | (951) 440 1267 | Other | Murrieta · Riverside County | — | — |
| Modern Comfort And Air INC | Nava Armando Ramirez | %20info@moderncomfortair.com | (909) 489 4018 | HVAC | Riverside · Riverside County | — | — |
| Modern Construction & Design | Lavenant Shaun | — | (951) 269 9345 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Modern Edge Tile & Stone | Antonio Alberto Lopez | — | (951) 956 3163 | Other | Perris · Riverside County | — | — |
| Modern Glazing Solutions | Modern Glazing Solutions | — | (760) 265 5024 | Windows, patio, painters | Cathedral City · Riverside County | — | — |
| Modern Heat And Air INC DBA Modern Construction Services | John Alexander Gorrell | — | (951) 369 1234 | HVAC | Riverside · Riverside County | — | — |
| Modern Homes Ps LLC | Travis James Pearson | — | (760) 238 3470 | GC, remodel, ADU | Palm Springs · Riverside County | — | — |
| Modern Instinct Construction | Jorge Arturo Jr Martinez | moderninstinctconstruction@gmail.com | (951) 623 1954 | GC, remodel, ADU | Winchester · Riverside County | — | — |
| Modern Landscaping Services | Reynaldo Medina | — | (951) 515 5401 | Windows, patio, painters | Riverside · Riverside County | — | — |
| Modern Misting Systems INC | Ryan Michael Risk | — | (760) 345 9429 | Other | Palm Desert · Riverside County | — | — |
| Modern Tile And Marble | Modern Tile And Marble | — | (760) 880 5872 | Other | Indio · Riverside County | — | — |
| Modern Tile Surface Installations | Modern Tile Surface Installations | — | (760) 641 5494 | Other | Cathedral City · Riverside County | — | — |
| Modern Tile Works By Jose | Modern Tile Works By Jose | — | (951) 662 8612 | Other | Corona · Riverside County | — | — |
| Modern Touch Construction | Israel Aaron Chavez | — | (760) 835 2777 | GC, remodel, ADU | Desert Hot Springs · Riverside County | — | — |
| Modern Valley Construction | Jaime Nadir Espinoza | — | (760) 844 6758 | GC, remodel, ADU | Thousand Palms · Riverside County | — | — |
| Modern View Construction | Marco Antonio Pulido | — | (442) 342 3468 | GC, remodel, ADU | Cathedral City · Riverside County | — | — |
| Moderne Builders | Moderne Builders | — | (760) 910 5473 | GC, remodel, ADU | Cathedral City · Riverside County | — | — |
| Moderno INC | Michael Anthony Palma | office@moderno.com | (619) 947 9477 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Modular Furniture Techs INC | Dale Dean Spaulding | — | (951) 218 4918 | Other | Moreno Valley · Riverside County | — | — |
| Modupe Adedeji Kosoko | Modupe Adedeji Kosoko | — | (858) 922 7783 | HVAC | Winchester · Riverside County | — | — |
| Moe's Pool Service INC | Eric Benjamin Gomez | — | (909) 827 2322 | Pool | Riverside · Riverside County | — | — |
| Mohamed Shaaban | Mohamed Shaaban | — | (951) 231 7106 | Electricians | Riverside · Riverside County | — | — |
| Mohr Electric | Alex Ray Tapia | — | (760) 770 8866 | Electricians | Palm Desert · Riverside County | — | — |
| Mohr Electric | Donald Louis Mohr | — | (760) 770 8866 | Electricians | Palm Desert · Riverside County | — | — |
| Moises Corona | Moises Corona | — | (760) 969 8903 | Windows, patio, painters | Thousand Palms · Riverside County | — | — |
| Moisin Group INC | Ernie Marin Ferarita | — | (951) 235 0248 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Mojave Pacific Electric | Michael Anthony Martinez | — | (909) 637 1886 | Electricians | Desert Hot Springs · Riverside County | — | — |
| Mojica Painting | Vicente Jr Mojica | — | (951) 425 7608 | Windows, patio, painters | Perris · Riverside County | — | — |
| Mojica Royal Construction INC | Gambino Aguirre Mojica | mojica_construction@yahoo.com | (714) 943 4850 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Molgon Construction | Bency Nmn Molina | — | (714) 795 4775 | Other | Homeland · Riverside County | — | — |
| Molina Electric | Gregory Dakota Molina | — | (909) 297 9105 | Electricians | Jurupa Valley · Riverside County | — | — |
| Molina Ruben Construction | Molina De Jesus Ruben | — | (951) 213 1914 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Monaco Concepts | Monaco Concepts | — | (760) 772 0280 | Pool | Palm Desert · Riverside County | — | — |
| Monarch Construction Group INC | Angel Quiroz-Hernandez | — | (760) 848 3613 | GC, remodel, ADU | Indio · Riverside County | — | — |
| Monarch Homes Desert Division INC DBA David Jacobsen Building Co | David Peter Jacobsen | — | (760) 413 8863 | GC, remodel, ADU | Indio · Riverside County | — | — |