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| Latah Creek Construction LLC | CC-01 | 2026 | Active |
| Latah Home Solutions LLC | CC-01 | 2026 | Active |
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| Lazy Smurf Enterprise LLC | CC-01 | 2003 | Active |
| Leadinglions Landscaping LLC | CC-01 | 2019 | Active |
| Learnedlogistics LLC | CC-01 | 2025 | Active |
| Leeco Inc | CC-01 | 2021 | Active |
| Leeson Electric | CC-01 | 2026 | Active |
| Legacy Construction & RSTN LLC | CC-01 | 2021 | Active |
| Legacy Lyft Remodeling | CC-01 | 2025 | Active |
| Legacy Roofing LLC | CC-01 | 2024 | Active |
| Legend Junk Removal | CC-01 | 2022 | Active |
| Legendary Gutters | CC-01 | 2024 | Active |
| Lenon Building Company | CC-01 | 2021 | Active |
| Leo Construction II LLC | CC-01 | 2019 | Active |
| Leonardo Design LLC | CC-01 | 2025 | Active |
| Leone & Keeble Inc | CC-01 | 1992 | Active |
| Levit Painting | CC-01 | 2025 | Active |
| Lewis Construction & Dev Inc | CC-01 | 2009 | Active |
| Lez Assist LLC | CC-01 | 2026 | Active |
| LH Contracting LLC | CC-01 | 2005 | Active |
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| Lill Construction Co | CC-01 | 1977 | Active |
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| Lish Excavation Co | CC-01 | 2007 | Active |
| Little Dog Fabrication LLC | CC-01 | 2018 | Active |
| Lloyd Simmons Design | CC-01 | 2009 | Active |
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| Lonestar NW LLC | CC-01 | 2021 | Active |
| Los Camachitos LLC | CC-01 | 2022 | Active |
| LT Contractor LLC | CC-01 | 2021 | Active |
| Lunar Tile Inc | CC-01 | 2012 | Active |
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| Luxury Landscapes & Dev LLC | CC-01 | 2018 | Active |
| Luxury Tile LLC | CC-01 | 2022 | Active |
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| M & L Construction Inc | CC-01 | 1994 | Active |
| M & L Mechanical LLC | CC-01 | 2006 | Active |
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| M Wolff Construction Corp | CC-01 | 2023 | Active |
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| Mac Construction LLC | CC-01 | 2023 | Active |
| Mackie Enterprises | CC-01 | 2021 | Active |
| Mackin & Little Inc | CC-01 | 2000 | Active |
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| Maintenance Masters LLC | CC-01 | 2025 | Active |
| Maison Camerco LLC | CC-01 | 2026 | Active |
| Malbco Development Inc | CC-01 | 2019 | Active |
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| Maple & Fir Home Services LLC | CC-01 | 2026 | Active |
| Marcella Construction | CC-01 | 2025 | Active |
| Marcon | CC-01 | 2022 | Active |
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| Mark Doering Construction Inc | CC-01 | 2024 | Active |
| Mark Ivins Construction Inc | CC-01 | 2008 | Active |
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| Marsh General Contractors Inc | CC-01 | 2018 | Active |
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| Martinson LLC | CC-01 | 2022 | Active |
| Master Build LLC | CC-01 | 2021 | Active |
| Matheny Construction LLC | CC-01 | 2026 | Active |
| Mathis Construction | CC-01 | 2025 | Active |
| Matrix Developments LLC | CC-01 | 2026 | Active |
| Matts General Contracting LLC | CC-01 | 2024 | Active |
| Mauer Construction Inc | CC-01 | 1995 | Active |
| Maverick Construction PNW LLC | CC-01 | 2022 | Active |
| Max Dirt Works LLC | CC-01 | 2026 | Active |
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| Maximus Apex LLC | CC-01 | 2026 | Active |
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| Mazhan Renovations LLC | CC-01 | 2026 | Active |
| McCallum Pntng & Home SVCS LLC | CC-01 | 2026 | Active |
| McCleary Heating & A/C LLC | CC-01 | 1997 | Active |
| McClintock & Turk Inc | CC-01 | 1963 | Active |
| McCloskey Construction Inc | CC-01 | 1999 | Active |
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| McDonald & Son Construction | CC-01 | 2004 | Active |
| McVay Bros Contrs Inc | CC-01 | 1966 | Active |
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| Meddock Construction LLC | CC-01 | 2022 | Active |
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