| Lara Garage Doors & Gates | Lara Garage Doors & Gates | — | (760) 222 6498 | Other | El Centro · Imperial County | — | — |
| Las Palmas Landscape | Las Palmas Landscape | laspalmaslandscape@yahoo.com | (760) 353 1220 | Windows, patio, painters | El Centro · Imperial County | — | — |
| Legacy Iron And Forge | Marcos Diaz Ramirez | — | (760) 540 3682 | Other | El Centro · Imperial County | — | — |
| Levy Abraham Estrada Landscape | Levy Abraham Estrada Landscape | — | (760) 234 9767 | Windows, patio, painters | Imperial · Imperial County | — | — |
| Lidco INC | Chris Eric Denton | — | (760) 344 8437 | Other | Brawley · Imperial County | — | — |
| Lidco INC | William Carter Taylor | — | (760) 344 8437 | Other | Brawley · Imperial County | — | — |
| Loe Drywall | Hector Armando Lopez | — | (760) 455 5640 | Other | Calexico · Imperial County | — | — |
| Lopez Air Conditioning INC | Lopez Saul | — | (442) 200 8864 | HVAC | El Centro · Imperial County | — | — |
| Luis Lopez Construction INC | Luis Manuel Lopez | — | (760) 783 3865 | GC, remodel, ADU | El Centro · Imperial County | — | — |
| Luke Hamby Construction | Luke Anthony Hamby | — | (760) 484 7907 | GC, remodel, ADU | Brawley · Imperial County | — | — |
| Lw INC | Fabian Hernandez Cervantes | — | (760) 960 8826 | HVAC | El Centro · Imperial County | — | — |
| Lz Construction INC | Joey Roger Imperial | info@lzconstruction.com | (760) 235 3675 | GC, remodel, ADU | Brawley · Imperial County | — | — |
| M & M Construction | Marvin Thomas Iii Mayne | — | (760) 427 8544 | GC, remodel, ADU | Brawley · Imperial County | — | — |
| M & M Contractor Builder Co | Marco Antonio Meza | — | (760) 960 6385 | GC, remodel, ADU | El Centro · Imperial County | — | — |
| M & M Pump & Metal Fabrication INC | Lynette Kay Mari | — | (760) 356 2442 | Other | Imperial · Imperial County | — | — |
| M A C Construction | Mario Antonio Salazar | — | (760) 344 6209 | Other | Brawley · Imperial County | — | — |
| M A G Construction INC | Miguel Angel Guevara | — | (760) 556 1619 | GC, remodel, ADU | El Centro · Imperial County | — | — |
| M P Construction | Martin Alejandro Paniagua | — | (760) 425 0590 | GC, remodel, ADU | El Centro · Imperial County | — | — |
| Mac Ecolnnova INC DBA Dsl Window Coverings | Carlos Alberto Macias | — | (760) 848 0150 | Other | Calexico · Imperial County | — | — |
| Macias Electric INC | Ruben Macias | impallari@gmail.com | (760) 927 1132 | Electricians | El Centro · Imperial County | — | — |
| Maciel Contractor's Construction | Maciel Alberto | — | (760) 791 7039 | GC, remodel, ADU | Calexico · Imperial County | — | — |
| Manuel Flores Concrete Construction INC | Flores Manuel | — | (760) 357 9580 | Other | Calexico · Imperial County | — | — |
| Marina Del Rey Construction | Jesus Alberto Lopez | — | (909) 961 4129 | GC, remodel, ADU | El Centro · Imperial County | — | — |
| Mark Nathanael Gaddis | Mark Nathanael Gaddis | — | (760) 355 4332 | GC, remodel, ADU | Imperial · Imperial County | — | — |
| Martin Fence INC | Meraz Martin Olaguez | — | (760) 808 7702 | Other | El Centro · Imperial County | — | — |
| Martin Hydroblasting Services INC | Dora Alejandra Parga-Gonzalez | — | (760) 355 2250 | Other | Brawley · Imperial County | — | — |
| Masters Construction A Division Of Farmers Land Leveling INC | Karen Renee Mc Daniel | — | (760) 344 7400 | Other | Brawley · Imperial County | — | — |
| Maverick Construction | Ruiz Vega Ramon | — | (760) 554 6420 | GC, remodel, ADU | El Centro · Imperial County | — | — |
| Mayoral Floor Covering Services INC | Jorge Jose Murakami | — | (619) 451 1417 | Other | Calexico · Imperial County | — | — |
| Mc Millwork And Finish Carpentry | Mc Millwork And Finish Carpentry | — | (760) 556 1810 | Other | Calexico · Imperial County | — | — |
| Medina's Plumbing Co | John Michael Medina | medinasplumbing@outlook.com | (310) 748 4822 | GC, remodel, ADU | Palos Verdes · Imperial County | — | — |
| Mendoza Painting Co INC | Federico Mendoza | — | (760) 970 4051 | Windows, patio, painters | El Centro · Imperial County | — | — |
| Michael William Mordah Construction | Michael William Mordah | — | (760) 966 5698 | GC, remodel, ADU | El Centro · Imperial County | — | — |
| Michael's Plumbing Co | Michael Matthew Kolasz | — | (619) 328 6489 | Other | Seeley · Imperial County | — | — |
| Mount Signal Security | Mount Signal Security | name@business.com | (442) 200-7852 | Alarm and generators | El Centro · Imperial County | — | — |
| Mp Apex Roofing | Ilse Trinidad Penuelas Medina | — | (760) 587 0863 | Other roofers | Brawley · Imperial County | — | — |
| N S Construction INC | Nicholas Jr Sanchez | — | (760) 352 4323 | GC, remodel, ADU | Imperial · Imperial County | — | — |
| New Concept General Contractors INC | Albert Anaya Miranda | — | (760) 791 3968 | GC, remodel, ADU | El Centro · Imperial County | — | — |
| New Creation Construction | Luna Ricardo | — | (408) 314 6296 | GC, remodel, ADU | El Centro · Imperial County | — | — |
| New Leaf Tree Services Corp | Matthew Roland Roldan | — | (760) 259 5348 | Tree | Calexico · Imperial County | — | — |