| Monarch Remodeling | Monarch Remodeling | — | (831) 588 8787 | GC, remodel, ADU | Capitola · Santa Cruz County | — | — |
| Monolithic Builders | Monolithic Builders | — | (209) 688 5111 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Monroy Painting | Monroy Painting | — | (831) 435 8859 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| Monrreal Concrete | Monrreal Concrete | — | (602) 430 6172 | Other | Watsonville · Santa Cruz County | — | — |
| Montagne Landscape | Montagne Landscape | — | (831) 294 1444 | Windows, patio, painters | Soquel · Santa Cruz County | — | — |
| Montano Plumbing INC | Montano Lawrence | — | (831) 426 0572 | HVAC | Santa Cruz · Santa Cruz County | — | — |
| Monteith Construction INC | Jon Bart Monteith | — | (831) 335 5001 | Other | Felton · Santa Cruz County | — | — |
| Monterey Bay Cabinetry | Monterey Bay Cabinetry | — | (831) 756 8577 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Monterey Bay Electric INC | Scott Martin Mcgrath | info@montereybayelectric.com | (831) 818 5626 | Electricians | Santa Cruz · Santa Cruz County | — | — |
| Monterey Bay Floors INC | Joseph Richard Carbajal | rcarbajal@montereybayfloors.com | (831) 728 4347 | Other | Watsonville · Santa Cruz County | — | — |
| Monterey Bay Plumbing | Monterey Bay Plumbing | — | (831) 214 2769 | Other | Aptos · Santa Cruz County | — | — |
| Monterey Bay Pool And Spa Maintenance | Laurie Ann Byrne | — | (831) 722 1475 | Pool | Freedom · Santa Cruz County | — | — |
| Monterey Bay Professional Landscape Services INC | Patrick Michael Carroll | — | (831) 419 5218 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |
| Monterey Bay Property Management | Monterey Bay Property Management | micah@micahrich.com | — | Property managers | Santa Cruz · Santa Cruz County | — | — |
| Monterey Bay Rebar INC | Raoul Tavil-Alejan Ortiz | montereybayrebar@sbcglobal.net | (831) 724 3013 | Other | Aptos · Santa Cruz County | — | — |
| Monterey Bay Refinishing INC | Cathy Louise Mc Coy | — | (831) 419-2941 | Other | Santa Cruz · Santa Cruz County | — | — |
| Monterey Structural Steel INC | Kenneth James Bachini | — | (831) 768 1277 | Other | Watsonville · Santa Cruz County | — | — |
| Monument Home Builders INC | Robert Vaughn Paul | — | (831) 247 2394 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Moon Builder | Moon Builder | — | (831) 588 8964 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Mora Construction | Jeffery Marlin Mora | — | (530) 945 8415 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Mora Door INC | Angus Lawrence Justus | — | (831) 768 9004 | Other | Watsonville · Santa Cruz County | — | — |
| Mora Painting INC | Rene Mora-Huerta | — | (831) 566 4760 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |
| Morales Construction Consulting Clean2sell.com | Morales Andrew | — | (408) 848 2111 | GC, remodel, ADU | Freedom · Santa Cruz County | — | — |
| More House Construction | Oscar Joseph Jr Martinez | — | (408) 592 8244 | GC, remodel, ADU | Soquel · Santa Cruz County | — | — |
| Moreno Roofing & Solar | Paul Avila Jr Moreno | — | (831) 724 6173 | Other roofers | Watsonville · Santa Cruz County | — | — |
| Morgan Construction | Colin Henry Mc Fee Morgan | — | (831) 688 3485 | Electricians | Aptos · Santa Cruz County | — | — |
| Morgan Haines Painting | Morgan Haines Painting | — | (831) 515 9328 | Windows, patio, painters | Aptos · Santa Cruz County | — | — |
| Moriarty's Roofing INC | Kelly Patrick Moriarty | info@moriartysroofing.com | (831) 345 8300 | Other roofers | Santa Cruz · Santa Cruz County | — | — |
| Morrish Construction | Tyler Talbott Morrish | — | (831) 295 0797 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Moss Construction | Justin Gregory Moss | info@mossconstruction.com | (831) 325 5234 | GC, remodel, ADU | Capitola · Santa Cruz County | — | — |
| Mott Landscape | Gary Joel Mott | — | (831) 685 9540 | Windows, patio, painters | Aptos · Santa Cruz County | — | — |
| Mountain Maintenance Construction Co | Andrew Pierce La Verne | — | (831) 234 2558 | GC, remodel, ADU | Brookdale · Santa Cruz County | — | — |
| Mountain Mechanical Service Company | Richard David Kojak | — | (831) 335 9193 | HVAC | Felton · Santa Cruz County | — | — |
| Moxie Builders INC | Katie Jo Conley | — | (831) 588 0049 | GC, remodel, ADU | Soquel · Santa Cruz County | — | — |
| Moynihan Construction | Timothy Alonzo Moynihan | eben@eyebytes.com | (831) 234 4427 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Mp Electric | Matthew Spencer Pasternak | — | (831) 214 7827 | Electricians | Scotts Valley · Santa Cruz County | — | — |
| Mr Construction | Rodriguez Mario | — | (831) 359 5297 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Mr Rooter Plumbing Of Santa Cruz | Michelle Ann Aliotti | — | (831) 476 8888 | Other | Aptos · Santa Cruz County | — | — |
| Msr Stucco Finishes | Abraham Zayas | — | (831) 235 9173 | Other | Watsonville · Santa Cruz County | — | — |
| Mtz Construction | Jesus Alberto Marcial-martinez | erick@mtzconstruction.com | (831) 421 2558 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |