| Luberto Tile | Luberto Tile | — | (408) 413 9886 | Other | Hollister · San Benito County | — | — |
| Luna Restoration & Innovation | Luna Restoration & Innovation | — | (619) 804-0703 | Restoration | San Marcos · San Benito County | — | — |
| Luna's Flooring Tile And Marble | Mario Edgar Juarez Luna | — | (831) 750 8677 | Other | Hollister · San Benito County | — | — |
| M G Construction | Mariano Ayala Garcia | info@mgconstruction.com | (831) 902 5294 | Electricians | Hollister · San Benito County | — | — |
| M I G Electric | Bustos Miguel | — | (831) 524 8507 | Electricians | Hollister · San Benito County | — | — |
| Magic Floors INC | Onofre J Jesus Gonzalez | info@magicfloors.com | (831) 207 7589 | Other | Hollister · San Benito County | — | — |
| Magic's Restoration & Construction | Enrique Octavio Mendoza Avina | — | (831) 801 8964 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Major League Plumbing And Rooter LLC | Michael J Cintron | — | (408) 480 2666 | Other | Hollister · San Benito County | — | — |
| Mann Construction | Charna Singh Mann | debbie@mannconstruction.com | (831) 524 3766 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Maplewood Landscape LLC | Adrian Perez Aguayo | maplewoodlandscape@outlook.com | (831) 905 9478 | Windows, patio, painters | Hollister · San Benito County | — | — |
| Marcel Adame Construction | Adame Marcel | — | (408) 489 1798 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Marcus Building Systems INC | Donald Stuart Marcus | — | (831) 636 8138 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Mario Ghiorzi Construction | Mario David Ghiorzi | — | (831) 637 8733 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Mario's Plumbing | Mario's Plumbing | — | (831) 637 8696 | Other | Hollister · San Benito County | — | — |
| Mark Anthony Construction And Roofing Inc. | Mark Anthony Construction And Roofing Inc. | — | (760) 478-5301 | Other roofers | San Marcos · San Benito County | — | — |
| Mark Nicholson INC | Rita Jo Krecklow | — | (831) 637 5728 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Marksmen Specialty Coatings | Marksmen Specialty Coatings | — | (510) 351 4118 | Windows, patio, painters | Hollister · San Benito County | — | — |
| Marquez Electric | Michael Jeremy Marquez | — | (831) 664 6824 | Electricians | Hollister · San Benito County | — | — |
| Martinez Concrete Construction | Ochoa Fernando Martinez | — | (831) 673 3026 | Other | Hollister · San Benito County | — | — |
| Martz Processing Equipment Mpe | Martz Processing Equipment Mpe | — | (831) 901 8575 | Other | Hollister · San Benito County | — | — |
| Masterpiece Landscapes | Masterpiece Landscapes | — | (831) 638 1779 | Windows, patio, painters | Hollister · San Benito County | — | — |
| Mc Kuin Pipeline INC | William Gene Mc Kuin | — | (831) 636 7680 | Other | Hollister · San Benito County | — | — |
| Mcc Property Services | Juan Gomez Munoz | — | (831) 801 0614 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Mejia Services Heating And Air Conditioning | Cristhian Edgardo Mejia Melgar | — | (408) 628 7872 | HVAC | Hollister · San Benito County | — | — |
| Mejia's Landscaping INC | Sotelo Eduardo Mejia | — | (831) 245 9700 | Windows, patio, painters | Hollister · San Benito County | — | — |
| Melitosyan Flooring | Melitosyan Flooring | — | (408) 966 3703 | Other | Hollister · San Benito County | — | — |
| Mendonsa Enterprises INC | Joshua Albert Mendonsa | — | (831) 245 6046 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Mercado Landscape Design INC | Sam Tarverdi | — | (408) 802 1176 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Mesa Ridge Roofing | Mesa Ridge Roofing | — | (760) 350-3858 | Other roofers | Rancho Santa Fe · San Benito County | — | — |
| Messina Plumbing Company INC | Joshua Brandon Messina | — | (408) 497 3897 | Other | Hollister · San Benito County | — | — |
| Mg Flooring | Mg Flooring | — | (408) 802 4107 | Other | Hollister · San Benito County | — | — |
| Mg Vision Hardscape & Design INC | Rosales Michael Gonzalez | — | (831) 902 5551 | Windows, patio, painters | Hollister · San Benito County | — | — |
| Michael Cole Construction | Michael David Cole | — | (831) 313 9276 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Michael Dehn Tile | Michael Dehn Tile | — | (408) 612 6207 | Other | Hollister · San Benito County | — | — |
| Michael Malone's Touch Of Class Tile | Michael Troy Walls | — | (831) 706 8850 | Other | Hollister · San Benito County | — | — |
| Miguel A Rodriguez | Miguel A Rodriguez | — | (408) 337 7093 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Miguel Saldana | Miguel Saldana | — | (831) 630 9018 | HVAC | Hollister · San Benito County | — | — |
| Miguel's Construction INC | Jorge Alberto Garcia Eslava | — | (408) 449 7544 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Millan Landscape And Design | Cesar Millan | — | (831) 265 6392 | Windows, patio, painters | Hollister · San Benito County | — | — |
| Miller Construction | Aaron Michael Miller | — | (831) 801 4810 | GC, remodel, ADU | Tres Pinos · San Benito County | — | — |