| Mox Electric | Richard Lee Mox | — | (760) 567 3661 | Electricians | La Quinta · Riverside County | — | — |
| Moxie Pest Control | Moxie Pest Control | — | (951) 444-9307 | Pest, tile roofs | Riverside · Riverside County | — | — |
| Moya Builder | Moya Builder | — | (760) 522 9843 | GC, remodel, ADU | Moreno Valley · Riverside County | — | — |
| Moya's Construction | Moya Alejandro | — | (951) 623 6082 | GC, remodel, ADU | Hemet · Riverside County | — | — |
| Moyao Swimming Pools | Jairo Saul Moyao Mendoza | — | (951) 283 8749 | Pool | Corona · Riverside County | — | — |
| Mp Demolition INC | Santana Moises Pineda | — | (323) 316 4988 | Other | Moreno Valley · Riverside County | — | — |
| Mp Glass INC | Armando Peter Penunuri | — | (858) 391-3344 | Windows, patio, painters | Riverside · Riverside County | — | — |
| Mp Glass Services | Becerril Moises Perez | — | (951) 545 5380 | Windows, patio, painters | Riverside · Riverside County | — | — |
| Mp Painting INC | Armando Servin | — | (760) 726 1570 | Windows, patio, painters | Temecula · Riverside County | — | — |
| Mp Quality Floors & Installations INC | Nelson Martinez | — | (909) 900 0432 | Other | Moreno Valley · Riverside County | — | — |
| Mp Renovation & Remodeling LLC | Mario Portillo | — | (323) 470 3496 | GC, remodel, ADU | Beaumont · Riverside County | — | — |
| Mp Total Construction | Mauricio Jesus Santana Sesmas | — | (951) 396 0175 | GC, remodel, ADU | Winchester · Riverside County | — | — |
| Mp Wall Systems | Marco Antonio Peralta | — | (714) 886 0195 | Other | Riverside · Riverside County | — | — |
| Mpb Restorations | Joseph Anthony Charletta | — | (530) 551 6907 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Mph Systems | Mph Systems | — | (951) 317 6960 | Electricians | Corona · Riverside County | — | — |
| Mpm Builders INC DBA Mpm Patio Covers | Moises Baltazar | — | (951) 746 4058 | Other | Menifee · Riverside County | — | — |
| Mpr Construction | Martinez Omar Tenorio | — | (714) 325 4816 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Mpr Painting INC | Maturano Pedro Rayo | — | (951) 707 5439 | Windows, patio, painters | Perris · Riverside County | — | — |
| Mps | Molina Christopher | — | (909) 556 9823 | Other | Desert Hot Springs · Riverside County | — | — |
| Mr A Concrete LLC | Manfredo Aldilio Marroquin Orellana | — | (951) 840 5184 | Other | Riverside · Riverside County | — | — |
| Mr Ajr Pool Services | Ramos Rodriguez Rigoberto | — | (760) 683 4343 | Pool | White Water · Riverside County | — | — |
| Mr B's Plumbing & Drain Cleaning | Christopher Robert Ballard | — | (951) 204 4533 | Other | Eastvale · Riverside County | — | — |
| Mr Bill Construction Solutions | William Christian Iii Grube | — | (951) 238 5155 | GC, remodel, ADU | San Jacinto · Riverside County | — | — |
| Mr Brent's Construction Corp | Brent Michael Allen | — | (951) 973 4547 | GC, remodel, ADU | Menifee · Riverside County | — | — |
| Mr Concrete Construction INC | Ernesto Guadalupe Rodriguez | — | (951) 545 6573 | Other | Jurupa Valley · Riverside County | — | — |
| Mr Cool Guy | Joshua Thomas Brinkman | — | (951) 234 9065 | HVAC | Temecula · Riverside County | — | — |
| Mr Doctor Painting INC | Rodriguez Denis | — | (760) 218 8196 | Windows, patio, painters | Desert Hot Springs · Riverside County | — | — |
| Mr Electric | Jose Eleazar Martinez | — | (760) 578 1213 | Electricians | Palm Desert · Riverside County | — | — |
| Mr Electric Of Murrieta | Patrick Brian Tarbet | — | (951) 834 5323 | Electricians | Murrieta · Riverside County | — | — |
| Mr Fix All | Lucio Moises Pena | — | (951) 570 4379 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Mr G Contractor INC | Gonzalez Josue Gaxiola | — | (951) 665 9041 | GC, remodel, ADU | Perris · Riverside County | — | — |
| Mr G's Plumbing | Mr G's Plumbing | — | (951) 259 1602 | Other | Perris · Riverside County | — | — |
| Mr Jose Pools And Spa | Mr Jose Pools And Spa | — | (909) 670 4767 | Pool | Jurupa Valley · Riverside County | — | — |
| Mr Mikes Home Heating And Air Conditioning | Michael Darren Biggs | — | (858) 361 8356 | HVAC | Hemet · Riverside County | — | — |
| Mr Shotcrete Corp | Jose Joel Ruiz Gonzalez | — | (714) 389 8756 | Other | Perris · Riverside County | — | — |
| Mr Stone Air Conditioning | Vargas Federico Gonzalez | — | (760) 578 9640 | HVAC | Indio · Riverside County | — | — |
| Mr Sunday Plumbing | Mr Sunday Plumbing | — | (760) 790 8634 | Other | Desert Hot Springs · Riverside County | — | — |
| Mr Tint Window Tinting | Mr Tint Window Tinting | — | (951) 737 7007 | Other | Norco · Riverside County | — | — |
| Mr Tub Fixer | Mr Tub Fixer | — | (760) 404 8593 | Other | La Quinta · Riverside County | — | — |
| Mr Watts Electric | Ryan Kevin Cleary | — | (714) 619 1575 | Electricians | Menifee · Riverside County | — | — |