| Margo Construction | Edward John Margo | — | (831) 254 8418 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Marini & Locatelli Property Management | Marini & Locatelli Property Management | — | (831) 216-8225 | Property managers | Santa Cruz · Santa Cruz County | — | — |
| Mario Capetillo Plumbing INC | Capetillo Mario | capetillomario@mariocapetilloplumbing.com | (831) 466 0108 | Other | Santa Cruz · Santa Cruz County | — | — |
| Mario Juarez Framing Construction | Juarez Ramon Mario | — | (831) 332 9469 | Other | Watsonville · Santa Cruz County | — | — |
| Mariscal Construction | Raul Alejandro Mariscal | — | (831) 998 2051 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Mark Davis Specialty Painting | Mark Davis Specialty Painting | — | (831) 251 8405 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| Mark Elward Construction | Mark Kenneth Elward | — | (831) 427 1466 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Mark Kevin Tafoya DBA Tafoya Construction Co | Mark Kevin Tafoya | — | (408) 251 1234 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Mark Lamothe Construction | Mark Peter Lamothe | — | (831) 252 5185 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Mark Laratta Construction - General Building Contractor | Mark David Laratta | — | (831) 336 2979 | GC, remodel, ADU | Ben Lomond · Santa Cruz County | — | — |
| Mark Moses Tile | Mark Moses Tile | — | (831) 722 1831 | Other | Watsonville · Santa Cruz County | — | — |
| Mark R Drummond | Mark R Drummond | — | (831) 239 4476 | GC, remodel, ADU | Capitola · Santa Cruz County | — | — |
| Mark S Houts Cons Co | Mark Sheldon Houts | — | (831) 588 2046 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Mark Torres | Mark Torres | info@boalswinnett.com | (650) 444 1389 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Mark W Roberts Construction | Mark Wendell Roberts | — | (831) 234 8143 | GC, remodel, ADU | Mt Hermon · Santa Cruz County | — | — |
| Markey Construction | Stephen Clair Markey | — | (831) 359 1634 | GC, remodel, ADU | Boulder Creek · Santa Cruz County | — | — |
| Marquez Construction | Bulmaro Marquez Marquez | — | (831) 588 0731 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Marquez Construction And Design | Jose Manuel Marquez | mcdbuilders831@gmail.com | (831) 786 6969 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Martensen Painting INC | Erik Jay Martensen | paintrby@pacbell.net | (831) 239 5287 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| Martin Lasich DBA Martin's Painting Service | Martin Mato Lasich | — | (831) 334 4207 | Windows, patio, painters | Freedom · Santa Cruz County | — | — |
| Martin Rohe Construction | Martin Louis Rohe | — | (831) 201 3540 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Marvelous Tile & Granite | Marvelous Tile & Granite | — | (831) 247 5453 | Other | Watsonville · Santa Cruz County | — | — |
| Mason Construction | Reno James Mason | — | (831) 386 4905 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Masterworks Fine Painting | Masterworks Fine Painting | — | (831) 234 5853 | Windows, patio, painters | Boulder Creek · Santa Cruz County | — | — |
| Mastropoalo Construction | Gavin Steve Mastropoalo | — | (408) 348 0228 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Matt Heath Const | Matt Heath Const | — | (307) 413 4944 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Matt Jackson Construction | Matthew Scott Jackson | — | (831) 334 0348 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Matt Kaempf | Matt Kaempf | — | (831) 227 4719 | Other | Santa Cruz · Santa Cruz County | — | — |
| Matt Rosso - Barbic Roofing | Rosso Matthew | — | (831) 458 1482 | Other roofers | Santa Cruz · Santa Cruz County | — | — |
| Matt Steinmetz Electric | Matthew Alexander Steinmetz | — | (831) 419 4060 | Electricians | Santa Cruz · Santa Cruz County | — | — |
| Matt Troxell Construction | Matthew Danger Troxell | — | (831) 246 1359 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Matthew D Stoffel Construction | Matthew Dale Stoffel | — | (831) 212 5277 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Matthew Fanning | Matthew Fanning | — | (831) 212 8930 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Maurer Construction | Kevin Alexander Maurer | mowcon@verizon.net | (408) 230 4811 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Maverick Engineering INC | Jeremy Martin Morrill | — | (831) 888 6778 | Other | Boulder Creek · Santa Cruz County | — | — |
| Maverick Plumbing Technicians INC | Valdez Jorge Ortiz | jorge@maverickplumbingtechnicians.com | (831) 515 9903 | Other | Watsonville · Santa Cruz County | — | — |
| Max Builders INC | Humberto Guzman | — | (831) 722 7199 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Max Spooner Building And Design | Max Spooner Building And Design | — | (831) 334 0877 | GC, remodel, ADU | Davenport · Santa Cruz County | — | — |
| Max Telford | Max Telford | — | (831) 332 2123 | GC, remodel, ADU | Felton · Santa Cruz County | — | — |
| Mc Electric | Mateo Kaska Ceralde | — | (831) 594 1651 | Electricians | Watsonville · Santa Cruz County | — | — |