| Mudslinger Concrete Pumping | Mudslinger Concrete Pumping | info@mudslingerconcretepumping.com | (209) 484 9073 | Other | Ripon · San Joaquin County | — | — |
| Mudville Construction INC | Ronald Lee Welch | — | (209) 609 5671 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Mueller Electric Incorporated | Michael Eugene Mueller | — | (209) 367 0334 | Electricians | Lodi · San Joaquin County | — | — |
| Muhlbeier INC | Jaclyn Renee Powell | — | (209) 481 3668 | Windows, patio, painters | Lodi · San Joaquin County | — | — |
| Mullahey Construction | Robert Michael Mullahey | — | (209) 747 4874 | GC, remodel, ADU | Thornton · San Joaquin County | — | — |
| Muller Tile INC | Duncan Edward Bryant | — | (209) 466 3083 | Other | Lodi · San Joaquin County | — | — |
| Munoz Roofing INC | Salvador Gonzalez Munoz | — | (209) 367 5572 | Other roofers | Acampo · San Joaquin County | — | — |
| Murillo & Sons Concrete | Murillo & Sons Concrete | — | (209) 957 3982 | Other | Stockton · San Joaquin County | — | — |
| Mv Drywall INC | Desiree Melanie Vidal | — | (408) 930 8633 | Other | Tracy · San Joaquin County | — | — |
| Mv Professional Painting | Miguel Angel Villalobos Serrano | info@mvprofessionalpainting.com | (408) 551 9015 | Windows, patio, painters | Tracy · San Joaquin County | — | — |
| My Bark Co INC | Mary Alice Yelton | — | (209) 786 4042 | Other | Linden · San Joaquin County | — | — |
| My Homes Inspection | My Homes Inspection | — | (209) 200-8444 | Inspectors | Stockton · San Joaquin County | — | — |
| Mytrix Construction | Nicholas Ryan Chandler | info@mytrixconstruction.com | (646) 464 5888 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| N C B Construction | Roberts Randy Mc | — | (209) 948 1411 | Electricians | Stockton · San Joaquin County | — | — |
| N C S Development INC | David Lyle Midura | — | (209) 598 3304 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| N J Mc Cutchen INC | Jay Alan Mc Cutchen | — | (209) 466 9704 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| N R W Painting | N R W Painting | — | (209) 601 1583 | Windows, patio, painters | Lodi · San Joaquin County | — | — |
| N T Landscape | N T Landscape | — | (209) 923 7979 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| N W Innovations Corp DBA Nwi Machinery | Michael James Ross | — | (209) 224 5469 | Other | Lodi · San Joaquin County | — | — |
| N&a Mudmen Drywall INC | Miguel Angel Navarro | — | (408) 726 1421 | Other | Tracy · San Joaquin County | — | — |
| Nacho's Plumbing | Nacho's Plumbing | — | (209) 810 3326 | Other | Lathrop · San Joaquin County | — | — |
| Naglee Construction INC | Raul Cuellar Soto | — | (408) 757 3469 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Naidu Pro Builders INC | Muni Ratan Naidu | — | (209) 518 1340 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Nation Wide Bird Control | Nation Wide Bird Control | — | (209) 835 5654 | Windows, patio, painters | Tracy · San Joaquin County | — | — |
| National Construction | Rupio Javier | — | (209) 271 4648 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| National G B M | National G B M | — | (925) 895 6226 | Electricians | Tracy · San Joaquin County | — | — |
| Nature Landscape Contractor INC | Jorge Luis Garcia Moreno | — | (916) 432 9078 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Naturescape Custom Landscape Management | Naturescape Custom Landscape Management | — | (209) 470 1414 | Windows, patio, painters | Woodbridge · San Joaquin County | — | — |
| Navarro Tree Service INC | Daniel Navarro | navarro_tree@icloud.com | (209) 294 9675 | Tree | Stockton · San Joaquin County | — | — |
| Navigator Development And Real Estate | Richard Todd De Ponte | — | (209) 649 4141 | GC, remodel, ADU | Ripon · San Joaquin County | — | — |
| Nazari General Contractor | Nazari General Contractor | — | (209) 597 0692 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Nbr Painting & Coating INC | Guerrero Bernardo | — | (510) 876 8381 | Windows, patio, painters | Lathrop · San Joaquin County | — | — |
| Ncmfg36 LLC | Marcus Daniel Staniford | — | (408) 256 3646 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Neal And Son Transportation INC | Robert John O'neal | — | (209) 456 6193 | Other | Manteca · San Joaquin County | — | — |
| Neely Electric | Steven Anthony Sr Neely | neelyelectric@sbcglobal.net | (209) 814 7770 | Electricians | Tracy · San Joaquin County | — | — |
| Neighborhood Plumbing INC | Joshua Andrew Aragon | — | (650) 793 7190 | Other | Tracy · San Joaquin County | — | — |
| Neuners Fencing | Neuners Fencing | — | (209) 470 4325 | Other | Ripon · San Joaquin County | — | — |
| Nevarez Cooling And Heating | Nevarez Cooling And Heating | — | (925) 339 3299 | HVAC | Tracy · San Joaquin County | — | — |
| New Creation Construction | Brian William Brophy | — | (209) 327 9571 | GC, remodel, ADU | Lockeford · San Joaquin County | — | — |
| New Environment | New Environment | — | (650) 771 3458 | Electricians | Manteca · San Joaquin County | — | — |