| Mayan Renovation Group INC | Marcos Gil Pedraza | — | (949) 351 2173 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Mayans Construction | Jacob Ismael Mayans | — | (714) 673 4817 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Mayfair Concrete Restoration INC | Edward John May | — | (949) 322 8131 | Restoration | Wildomar · Riverside County | — | — |
| Mayito's Concrete INC | Zepeda Adan Morales | — | (951) 534 2134 | Other | Moreno Valley · Riverside County | — | — |
| Mayo's General Construction | Charles Norman Pulliam | — | (951) 205 2532 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Mayorga's Home Painting Service INC | Anayeli Santiago-Garcia | — | (760) 282 9870 | Windows, patio, painters | Hemet · Riverside County | — | — |
| Maz Tile & Stone | Maz Tile & Stone | — | (951) 830 8116 | Other | Corona · Riverside County | — | — |
| Mazari Rough Carpentry And Framing | Christian Alexis Mazari | — | (909) 254 3087 | Other | Calimesa · Riverside County | — | — |
| Mazaya Garage Door Services | Ibrahim Mohammad Mahamda | — | (714) 610 6610 | Other | Corona · Riverside County | — | — |
| Mb Roofing | Miguel Angel Belmonte | — | (951) 452 9406 | Other roofers | San Jacinto · Riverside County | — | — |
| Mbc Construction INC | Marcos Tulio Bolanos | — | (951) 265 7678 | GC, remodel, ADU | Menifee · Riverside County | — | — |
| Mbl Landscape & Design INC | Mario Orozco | — | (714) 862 3787 | Windows, patio, painters | Riverside · Riverside County | — | — |
| Mc Air | Mc Air | — | (760) 501 1168 | HVAC | Indio · Riverside County | — | — |
| Mc Andrew Construction | Michael Timothy Mc Andrew | — | (310) 503 0080 | GC, remodel, ADU | Blythe · Riverside County | — | — |
| Mc Bride Construction | Christopher Allan Mc Bride | — | (951) 750 0206 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Mc Bride Painting & Decorating | Mc Bride Painting & Decorating | — | (909) 289 5262 | Windows, patio, painters | Calimesa · Riverside County | — | — |
| Mc Builders INC | Cesar Hinojosa | — | (909) 868 8853 | GC, remodel, ADU | Menifee · Riverside County | — | — |
| Mc Cabes Concrete | Mc Cabes Concrete | — | (714) 309 0202 | Other | Riverside · Riverside County | — | — |
| Mc California Construction | Jose Alfredo Sr Rosales | mccaliforniaconstruction93@gmail.com | (909) 657 3187 | GC, remodel, ADU | Moreno Valley · Riverside County | — | — |
| Mc Call's Meters INC | Douglas Richard Duguid | — | (951) 654 3799 | Other | Hemet · Riverside County | — | — |
| Mc Callum Pools | Mc Callum Pools | — | (760) 275 6403 | Pool | Indio · Riverside County | — | — |
| Mc Cleaning Solutions INC | Armando Bojorquez Jr Echeverria | — | (951) 536 3211 | Other | Riverside · Riverside County | — | — |
| Mc Clure Construction | Jay Lawrence Mcclure | — | (951) 202 0565 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Mc Comas INC | Michael Ray Mccomas | firstname@mccomas.com | (951) 654 4350 | GC, remodel, ADU | San Jacinto · Riverside County | — | — |
| Mc Coy Construction | James Douglas Mc Coy | — | (951) 296 8967 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Mc Donald Electric INC | Beverly Lynn Mc Donald | impallari@gmail.com | (951) 684 1663 | Electricians | Riverside · Riverside County | — | — |
| Mc Faddin's Painting | Mc Faddin's Painting | mcfaddinspainting@gmail.com | (760) 807 1645 | Windows, patio, painters | Murrieta · Riverside County | — | — |
| Mc Green Field Co | Manuel Sandoval Montes De Oca | abner@mcgreenfield.com | (714) 386-0270 | Windows, patio, painters | Menifee · Riverside County | — | — |
| Mc Installations | Luis Alfonso Camou | — | (951) 244 3222 | GC, remodel, ADU | Sun City · Riverside County | — | — |
| Mc Intyre J L | Mc Intyre J L | — | (951) 403 1751 | GC, remodel, ADU | Blythe · Riverside County | — | — |
| Mc Intyre Pools & Spas INC | Marvin Michael Mc Intyre | — | (760) 342 3612 | Pool | Indio · Riverside County | — | — |
| Mc Kay Roofing & Home Services LLC | Michael Victor Jr Mc Kay | — | (714) 932 4285 | Other roofers | Corona · Riverside County | — | — |
| Mc Keever Water Well & Pump Service INC | Jesse Matthew Mc Keever | — | (760) 399 4237 | Other | Thermal · Riverside County | — | — |
| Mc Kinney Construction Company INC | Corey Edward Watt | — | (951) 332 0752 | Other | Riverside · Riverside County | — | — |
| Mc Kinzie Electrical Contractors INC | Raymond Arthur Iii Mc Kinzie | — | (760) 360 0728 | Electricians | Palm Desert · Riverside County | — | — |
| Mc Leod's Air Conditioning & Heating | John Herbert Mc Leod | — | (760) 409 7298 | HVAC | Indio · Riverside County | — | — |
| Mc Pro Builds INC | Olguin Santiago Candia | — | (714) 926 1049 | GC, remodel, ADU | Moreno Valley · Riverside County | — | — |
| Mc Walk-ins INC | Stephen Chaney Rodriguez | — | (909) 622 1615 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Mcalmond Construction | Christopher Paul Mcalmond | — | (626) 826 5978 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Mccabe's Landscape Construction | John Thomas Mc Cabe | — | (951) 694 5384 | Windows, patio, painters | Murrieta · Riverside County | — | — |