| More Landscape | More Landscape | morelandscape1@gmail.com | (760) 844 3512 | Windows, patio, painters | Cathedral City · Riverside County | — | — |
| More Roofing INC | Rafael Morales | — | (951) 392 5981 | Other roofers | San Jacinto · Riverside County | — | — |
| Morefield Floor Coverings | Morefield Floor Coverings | — | (909) 991 2363 | Other | Riverside · Riverside County | — | — |
| Morelias Best Custom Cabinet INC | Oscar Valladolid | — | (951) 220 4820 | Other | Riverside · Riverside County | — | — |
| Moreno & Company INC | Jose Manuel Moreno | — | (951) 741 1851 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Moreno And Sons Painting INC | Richard Nunez Moreno | — | (760) 343 3141 | GC, remodel, ADU | Thousand Palms · Riverside County | — | — |
| Moreno Building & Development LLC | Marco Alejandro Moreno | — | (760) 333 6543 | GC, remodel, ADU | Desert Hot Springs · Riverside County | — | — |
| Moreno Construction & Building | Heriberto Moreno Jr Aguilar | — | (760) 702 9028 | GC, remodel, ADU | Blythe · Riverside County | — | — |
| Moreno Engineering INC | David James Moreno | — | (951) 785 1230 | Other | Corona · Riverside County | — | — |
| Moreno Fire Protection Co INC | Moreno Israel | — | (951) 261 2069 | Other | Riverside · Riverside County | — | — |
| Moreno General Services INC | Richard Todd Moreno | mgsacct@morenogeneralservices.com | (951) 656 5515 | Electricians | Moreno Valley · Riverside County | — | — |
| Moreno Heritage Construction LLC | Vidal Moreno | — | (951) 906 5531 | GC, remodel, ADU | Menifee · Riverside County | — | — |
| Moreno Plastering | Moreno Plastering | — | (951) 956 4148 | Other | Moreno Valley · Riverside County | — | — |
| Moreno Taping LLC | Gutierrez Rafael Moreno | — | (714) 313 5787 | Other | Riverside · Riverside County | — | — |
| Moreno Tile Co | Joseph Isaac Moreno | — | (858) 457 4608 | Other | Temecula · Riverside County | — | — |
| Moreno Valley Plumber | David Keith Hamilton | — | (951) 485 0911 | Other | Moreno Valley · Riverside County | — | — |
| Morey Plumbing Heating & Cooling | Morey Plumbing Heating & Cooling | — | (619) 654 0727 | HVAC | Bermuda Dunes · Riverside County | — | — |
| Morez Tile Care | Morez Tile Care | — | (760) 676 6130 | Other | Desert Hot Springs · Riverside County | — | — |
| Morgan Brothers Construction | Alexander Mitchell Morgan | — | (951) 805 8503 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Morgan Construction Company INC | James Hartford Hunter | — | (951) 285 2151 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Morgan Electric | Douglas Lee Morgan | — | (951) 905 7717 | Electricians | Hemet · Riverside County | — | — |
| Morin Construction INC | Edward James Morin | — | (760) 464 6253 | GC, remodel, ADU | Indio · Riverside County | — | — |
| Morland Air Construction INC | Timothy James Garland | — | (909) 322 6494 | HVAC | Perris · Riverside County | — | — |
| Morning Star Concrete Construction INC | Kimberly Marie Flowers | — | (951) 807 9787 | Other | Menifee · Riverside County | — | — |
| Morr-is-tested INC | Jeffrey Clinton Cravens | — | (714) 713 9411 | Other | Wildomar · Riverside County | — | — |
| Morrison Construction | Samuel Lane Morrison | — | (951) 205 3393 | GC, remodel, ADU | Menifee · Riverside County | — | — |
| Morrow Build INC | Johnny Shen | — | (408) 666 5818 | GC, remodel, ADU | Eastvale · Riverside County | — | — |
| Mortaza Halabian | Mortaza Halabian | — | (909) 717 2813 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Moses Minh Khuu | Moses Minh Khuu | — | (626) 758 8089 | HVAC | La Quinta · Riverside County | — | — |
| Mosier Family Enterprise | Jennie A Meckna | — | (562) 204 0729 | Windows, patio, painters | Wildomar · Riverside County | — | — |
| Mosqueda Roofing | Mosqueda Eddy | mosquedaroofingco@gmail.com | (714) 650 3556 | Other roofers | Corona · Riverside County | — | — |
| Mota's Floorcovering INC | Juan Carlos Mota | — | (951) 687 6682 | Other | Riverside · Riverside County | — | — |
| Motive Energy Telecommunications Group LLC | Lynn Kay Leavitt | — | (951) 284 0189 | Electricians | Corona · Riverside County | — | — |
| Mount Sinai Roofing INC | Guerra Garcia Rogelio | — | (760) 884 1859 | Other roofers | Temecula · Riverside County | — | — |
| Mountain Air Construction | Dora Jean Nordquist | — | (951) 849 7953 | GC, remodel, ADU | Banning · Riverside County | — | — |
| Mountain Mechanical Services LLC | Timothy Jay Olivier | — | (951) 692 0877 | HVAC | Mountain Center · Riverside County | — | — |
| Mountainside Construction Group | Hector Emmanuel Yerden | — | (714) 914 4523 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Mourhess Construction | Ryan Christopher Mourhess | — | (951) 314 2006 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Moval Home Services | Willyam Jaime Hernandez | — | (951) 322 2061 | Other | Moreno Valley · Riverside County | — | — |
| Mow It Down | Michael Thomas Utterback | — | (951) 782 8648 | Windows, patio, painters | Riverside · Riverside County | — | — |