| M D Heating & Air | M D Heating & Air | — | (951) 288 2026 | HVAC | Rocklin · Placer County | — | — |
| M D Painting INC | Marc Allen Doyle | — | (916) 208 4946 | Windows, patio, painters | Roseville · Placer County | — | — |
| M F Miller Coatings INC | Mark Fredrick Miller | — | (530) 888 8356 | Windows, patio, painters | Auburn · Placer County | — | — |
| M G Builders | M G Builders | — | (530) 906 9790 | GC, remodel, ADU | Tahoe City · Placer County | — | — |
| M G Construction | Michael Allen Gee | info@mgconstruction.com | (916) 660 2269 | GC, remodel, ADU | Lincoln · Placer County | — | — |
| M G Hilton INC DBA Quality Cabinets | Michael Guy Hilton | — | (916) 652 6492 | Other | Loomis · Placer County | — | — |
| M J Construction | Chernioglo Valeriy | — | (916) 505 2880 | GC, remodel, ADU | Loomis · Placer County | — | — |
| M J Frank Construction | Michael Joseph Frank | — | (916) 660 6078 | GC, remodel, ADU | Rocklin · Placer County | — | — |
| M K Construction | Kogan Mark | — | (415) 568 1377 | GC, remodel, ADU | Roseville · Placer County | — | — |
| M L G Construction | Michael Lawrence Gross | — | (530) 488 0880 | GC, remodel, ADU | Weimar · Placer County | — | — |
| M Lemesh Construction | Michael Elliott Lemesh | — | (415) 328 0110 | GC, remodel, ADU | Roseville · Placer County | — | — |
| M M C Construction | Malissa Marie Cenatiempo | — | (916) 367 2587 | GC, remodel, ADU | Auburn · Placer County | — | — |
| M P L Construction | Michael Paul Leach | — | (805) 901 1134 | GC, remodel, ADU | Roseville · Placer County | — | — |
| M S L Construction Corp | Jayson Kurt Lehmann | — | (916) 223 8415 | Electricians | Loomis · Placer County | — | — |
| M T L Construction | Mark Thomas Lee | — | (916) 759 8472 | GC, remodel, ADU | Loomis · Placer County | — | — |
| M T N Excavation | M T N Excavation | — | (916) 768 7371 | Other | Newcastle · Placer County | — | — |
| M T N Specialty Synthetic Coatings | Michael Robert Steel | — | (303) 768 7310 | Other | Roseville · Placer County | — | — |
| M V Construction | Miroslav Igorovich Vysotsky | — | (916) 600 1433 | GC, remodel, ADU | Roseville · Placer County | — | — |
| M W H Design | M W H Design | — | (530) 228 3103 | Electricians | Colfax · Placer County | — | — |
| M W Swan Construction INC | Martin Wilsey Swan | — | (916) 257 4800 | GC, remodel, ADU | Weimar · Placer County | — | — |
| M+a360 Construction | William Harold Jr Misura | — | (916) 591 5190 | GC, remodel, ADU | Roseville · Placer County | — | — |
| M-3 Construction INC | Shawn Michael Sullivan | — | (209) 245 5254 | GC, remodel, ADU | Auburn · Placer County | — | — |
| Macfab Welding | Macfab Welding | — | (916) 918 9266 | Other | Loomis · Placer County | — | — |
| Mach 1 Plumbing LLC | Brent Anthony Cano | impallari@gmail.com | (916) 532 9015 | Other | Lincoln · Placer County | — | — |
| Maciel's Home Improvements | Maciel's Home Improvements | — | (916) 910 8941 | GC, remodel, ADU | Lincoln · Placer County | — | — |
| Mack & Son Construction INC | John Addison Mack | — | (916) 276 5048 | GC, remodel, ADU | Lincoln · Placer County | — | — |
| Mack Capital LLC DBA Premier Pool Service | Brett Albert Mack | — | (916) 778 7106 | Pool | Loomis · Placer County | — | — |
| Mackinaw Plumbing INC | Laura Jean Estalote | mackinaw_plumbing@yahoo.com | (530) 546 5226 | Other | Carnelian Bay · Placer County | — | — |
| Madera Framing INC | Jerry Lee Merry | — | (916) 652 8828 | GC, remodel, ADU | Loomis · Placer County | — | — |
| Madison Drywall | Madison Drywall | — | (530) 615 7472 | Other | Newcastle · Placer County | — | — |
| Madison Roofing | Anthony Jake Perez | — | (916) 812 7069 | Other roofers | Roseville · Placer County | — | — |
| Magdiel Isai Resendiz | Magdiel Isai Resendiz | — | (916) 870 8511 | Windows, patio, painters | Lincoln · Placer County | — | — |
| Magic Sun Electric INC | Brandon Richard Hurlock | chad@magicsunelectric.com | (916) 794 0448 | Electricians | Loomis · Placer County | — | — |
| Magna - Kote Electrostatic Painting | Magna - Kote Electrostatic Painting | — | (916) 786 8777 | Windows, patio, painters | Roseville · Placer County | — | — |
| Magorian Mine Services | Donald Ward Magorian | — | (530) 269 1960 | Other | Auburn · Placer County | — | — |
| Majestic Construction & Design INC | Maurice Elpidio Haro | — | (310) 994 9177 | GC, remodel, ADU | Lincoln · Placer County | — | — |
| Majestic Vintage World | Majestic Vintage World | — | (916) 501 7771 | Windows, patio, painters | Auburn · Placer County | — | — |
| Make Quality Construction | Aleksandr Iosifovich Rabushko | office@makequalityconstruction.com | (956) 517 9222 | GC, remodel, ADU | Rocklin · Placer County | — | — |
| Maksym Vylobkov | Maksym Vylobkov | — | (718) 500 7301 | HVAC | Roseville · Placer County | — | — |
| Mana Construction | Jonathan Kekoa Chene Rapozo | — | (279) 999 2350 | GC, remodel, ADU | Rocklin · Placer County | — | — |