| M G Belko Construction | Michael Graham Belko | — | (805) 574 9389 | GC, remodel, ADU | Solvang · Santa Barbara County | — | — |
| M G Construction | Jose Antonio Guerrero-munguia | info@mgconstruction.com | (805) 896 8496 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| M G S General Engineering INC | Matthew Gilindo Sicheri | — | (818) 399 2966 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| M H Gudmunds Construction | Mark Hamar Gudmunds | — | (805) 680 4050 | GC, remodel, ADU | Santa Maria · Santa Barbara County | — | — |
| M H I C Construction INC | Mark Alan Hemming | mark@mhicconstruction.com | (805) 680 7068 | GC, remodel, ADU | Santa Ynez · Santa Barbara County | — | — |
| M J E | M J E | — | (805) 637 3042 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| M J Electric | Matthew David Johnson | — | (805) 698 3061 | Electricians | Santa Barbara · Santa Barbara County | — | — |
| M J M Contractors | Matthew John Moore | — | (805) 757 3855 | GC, remodel, ADU | Lompoc · Santa Barbara County | — | — |
| M J Painters INC DBA Fresh Coat Painters | Justin Alan Engelbach | — | (805) 394 4021 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| M J Painting | M J Painting | — | (805) 448 7173 | Windows, patio, painters | Lompoc · Santa Barbara County | — | — |
| M J Plumbing & Repair INC | Aceves Jesus Sanchez | — | (805) 868 7918 | Other | Lompoc · Santa Barbara County | — | — |
| M J R Plumbing | M J R Plumbing | — | (805) 896 2027 | Other | Santa Barbara · Santa Barbara County | — | — |
| M M Ontiveros Carpentry | M M Ontiveros Carpentry | — | (805) 291 7507 | GC, remodel, ADU | Goleta · Santa Barbara County | — | — |
| M Manzo Construction INC | Martin Barajas Manzo | — | (805) 705 1207 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| M N M General Contractor And Painting Contractor | Martin Najera Munoz | — | (805) 708 6515 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| M R Construction | Manny Rodriguez | — | (805) 315 0017 | GC, remodel, ADU | Lompoc · Santa Barbara County | — | — |
| M Timm Development INC | Milan Eugene Timm | — | (805) 963 0358 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| M V Construction | Erasmo Mito Villapudua | — | (805) 570 3054 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| M V R Electrical INC | Matthew Vincent Riley | — | (805) 452 7510 | Electricians | Santa Barbara · Santa Barbara County | — | — |
| M W Jacobs Construction | Michael Wayne Jacobs | — | (805) 944 4067 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| M Z Construction Co | Mario Ernest Zaragoza | — | (805) 819 1509 | GC, remodel, ADU | Solvang · Santa Barbara County | — | — |
| M Z Construction Company LLC | Meza Chavez Jesus | — | (805) 363 8960 | GC, remodel, ADU | Santa Maria · Santa Barbara County | — | — |
| M/m Mechanical INC | Steven Allen Vior | — | (805) 745 1126 | HVAC | Carpinteria · Santa Barbara County | — | — |
| Mac Brown Excavating INC | Deborah Anne Brown | — | (805) 649 9700 | Other | Carpinteria · Santa Barbara County | — | — |
| Macaluso Pools INC | Jeff Allen Macaluso | — | (805) 681 9559 | Pool | Goleta · Santa Barbara County | — | — |
| Macc Construction | Che Shane Maccosham | info@macc-construction.com | (805) 895 2852 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| Macias Construction | Jose Antonio Macias Lozano | — | (805) 598 4695 | GC, remodel, ADU | Santa Maria · Santa Barbara County | — | — |
| Mackenzie Building And Design | Mackenzie Building And Design | — | (619) 717 1238 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| Macko Construction | Michael Joseph Macko | — | (805) 883 8550 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| Macy Landscaping INC | John Eliot Macy | info@macylandscaping.com | (805) 451 2805 | Windows, patio, painters | Santa Barbara · Santa Barbara County | — | — |
| Madill Construction | Clayton George Madill | — | (805) 686 5969 | GC, remodel, ADU | Santa Ynez · Santa Barbara County | — | — |
| Magallanes Landscape | Magallanes Landscape | — | (805) 284 4839 | Windows, patio, painters | Goleta · Santa Barbara County | — | — |
| Magid Masonry INC | Tyler Arley Bishop | — | (805) 899 2720 | Other | Santa Barbara · Santa Barbara County | — | — |
| Magnum Electric | Rodney Amado Hernandez | larry@magnumelectric.com | (209) 587 2321 | Electricians | Santa Barbara · Santa Barbara County | — | — |
| Mahoney Construction | Kelly John Mahoney | — | (805) 451 4576 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| Main Line Engineering Construction INC | Antonio Vaca Arroyo | — | (805) 588 5223 | Other | Lompoc · Santa Barbara County | — | — |
| Mainline Utility Company | Michael Scott Mac Eachern | — | (805) 434 5015 | Other | Lompoc · Santa Barbara County | — | — |
| Mainz Builders INC | Morgan J Mainz | mainzbuilders@gmail.com | (805) 895 1495 | GC, remodel, ADU | Summerland · Santa Barbara County | — | — |
| Majestic Painting | Majestic Painting | — | (323) 859 5074 | Windows, patio, painters | Santa Barbara · Santa Barbara County | — | — |
| Majestic Plaster Finishes INC | Luis Enrique Albarran Gaytan | — | (805) 861 3212 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |