| Mfx Tile | Mfx Tile | mfxtile@gmail.com | (805) 748 5528 | Other | San Luis Obispo · San Luis Obispo County | — | — |
| Mg Construction | Armando Alfonso Gonzales | info@mgconstruction.com | (805) 440 9469 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Mg Roofing | Joseph Mitchell Green | — | (805) 423 1169 | Other roofers | Paso Robles · San Luis Obispo County | — | — |
| Mge Underground | Michaeljoe Matthew Goldstein | — | (805) 238 3510 | Electricians | Paso Robles · San Luis Obispo County | — | — |
| Mgm Home Services Electrical | Mark Glenn Miller | — | (805) 380 6275 | Electricians | Atascadero · San Luis Obispo County | — | — |
| Mgp Coatings | Matthew Lee Gifford | — | (559) 719 0640 | Windows, patio, painters | Atascadero · San Luis Obispo County | — | — |
| Michael A Buerster | Michael A Buerster | — | (805) 471 1245 | Other | Templeton · San Luis Obispo County | — | — |
| Michael A Cooper | Michael A Cooper | — | (805) 423 6923 | GC, remodel, ADU | Morro Bay · San Luis Obispo County | — | — |
| Michael Anthonys Painting | Michael Anthonys Painting | — | (805) 234 0807 | Windows, patio, painters | Templeton · San Luis Obispo County | — | — |
| Michael Beck Drywall & Construction INC | Michael Eugene Beck | — | (805) 712 5021 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Michael Bray Construction | Michael Lee Bray | info@michaelbrayconstruction.com | (805) 239 3155 | Other | Paso Robles · San Luis Obispo County | — | — |
| Michael Clark | Michael Clark | — | (707) 540 2129 | Other | San Luis Obispo · San Luis Obispo County | — | — |
| Michael Cripe Construction | Michael Lee Cripe | — | (805) 440 5557 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Michael D Fairbrother | Michael D Fairbrother | — | (805) 459 5076 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Michael Davis Construction | Michael Allan Davis | — | (805) 310 3416 | GC, remodel, ADU | Pismo Beach · San Luis Obispo County | — | — |
| Michael De Blauw Construction | Michael Allan De Blauw | — | (805) 440 8014 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Michael Dean Claxton | Michael Dean Claxton | — | (805) 473 1453 | Other | Grover City · San Luis Obispo County | — | — |
| Michael Edward Bertzfield Ii | Michael Edward Bertzfield Ii | — | (805) 286 5599 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Michael Frederick Paving Corp | Michael Louis Frederick | — | (805) 466 5060 | Other | Atascadero · San Luis Obispo County | — | — |
| Michael G Boyack Construction | Michael George Boyack | — | (805) 441 4186 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Michael Harrison Finish Carpentry | Michael Harrison Finish Carpentry | — | (805) 441 1294 | Other | Atascadero · San Luis Obispo County | — | — |
| Michael Javine Flooring Contractor | Michael Javine Flooring Contractor | — | (805) 441 2240 | Other | Paso Robles · San Luis Obispo County | — | — |
| Michael Joseph Duran | Michael Joseph Duran | — | (559) 783 3933 | Other | San Miguel · San Luis Obispo County | — | — |
| Michael Kelly Construction | Michael James Kelly | — | (805) 459 4821 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Michael Mccrary Construction | Michael Shannon Mccrary | — | (805) 319 6711 | GC, remodel, ADU | Los Osos · San Luis Obispo County | — | — |
| Mid - State Electric | Kevin Dean Bratcher | — | (805) 264 6777 | Electricians | Grover Beach · San Luis Obispo County | — | — |
| Mid Coast Builders | Mid Coast Builders | — | (805) 268 4172 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Mid Coast Mechanical INC | Joseph Anthony Jr Arellano | — | (805) 543 1135 | HVAC | San Luis Obispo · San Luis Obispo County | — | — |
| Mid Coast Plastering | Mid Coast Plastering | — | (805) 610 1892 | Other | Paso Robles · San Luis Obispo County | — | — |
| Mid State Painting | Mid State Painting | — | (805) 709 5993 | GC, remodel, ADU | Grover Beach · San Luis Obispo County | — | — |
| Mid State Roofing INC | Wade Allen Einolander | — | (805) 239 4054 | Other roofers | Paso Robles · San Luis Obispo County | — | — |
| Mid-coast Fire Protection INC | Stephanie Hansen | — | (805) 489 2889 | Other | Grover Beach · San Luis Obispo County | — | — |
| Mid-west Coast Custom Builder | Mid-west Coast Custom Builder | — | (502) 645 0578 | GC, remodel, ADU | Pismo Beach · San Luis Obispo County | — | — |
| Midcal Dredging INC | Randal Vernon Thomas | — | (559) 707 6904 | Other | Templeton · San Luis Obispo County | — | — |
| Midland Pacific Building Corporation DBA Midland Pacific Homes | Dennis Anthony Moresco | — | (805) 466 5100 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Midstate Drillers | Richard Joe Hanson | info@midstatedrillers.com | (907) 242 9066 | Other | Paso Robles · San Luis Obispo County | — | — |
| Miguel's Tile | Miguel's Tile | — | (805) 234 0955 | Other | San Luis Obispo · San Luis Obispo County | — | — |
| Mike Bogle Construction INC | Michael Monroe Bogle | — | (805) 489 9562 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Mike Burton Trucking & Grading | Mike Burton Trucking & Grading | — | (805) 771 8603 | Other | Morro Bay · San Luis Obispo County | — | — |
| Mike Deveau Construction | Michael Paul Deveau | — | (805) 235 2492 | GC, remodel, ADU | Morro Bay · San Luis Obispo County | — | — |