| Carter Landscaping/Const LLC | CC-01 | 2017 | Active |
| Casacano LLC | CC-01 | 2008 | Active |
| Cascade Cable Constrs Inc | CC-01 | 1968 | Active |
| Cascade Rain Gutters Inc | CC-01 | 2014 | Active |
| Cascadia Comfort LLC | CC-01 | 2024 | Active |
| Cascadia Concrete Const LLC | CC-01 | 2024 | Active |
| Cascadia Paint Co LLC | CC-01 | 2022 | Active |
| Cascadia Screen Printing | CC-01 | 2025 | Active |
| Castle Construction Inc | CC-01 | 1995 | Active |
| Catalyst Consultng & Exvtn LLC | CC-01 | 2023 | Active |
| Catelli Construction LLC | CC-01 | 2021 | Active |
| CCM Concrete Polishing LLC | CC-01 | 2022 | Active |
| CD Roadways LLC | CC-01 | 2024 | Active |
| CDT Construction Inc | CC-01 | 2022 | Active |
| Cece's Contracting Inc | CC-01 | 2025 | Active |
| Cedar Builders Inc | CC-01 | 1977 | Active |
| Centennial Enterprise | CC-01 | 2018 | Active |
| Centennial Property Mngmnt Co | CC-01 | 2014 | Active |
| Central Pre Mix Conc Co | CC-01 | 1969 | Active |
| Century Coatings Inc | CC-01 | 1998 | Renew by Dec 9, 2026 |
| Certapro Painters | CC-01 | 2005 | Active |
| Certified Fence LLC | CC-01 | 2014 | Active |
| CG Rippy & Associates LLC | CC-01 | 2007 | Active |
| Chattaroy Cabinet Co | CC-01 | 2026 | Active |
| Check List LLC | CC-01 | 2025 | Active |
| Chris' Roofing Rescue LLC | CC-01 | 2025 | Active |
| Chubby Goat Flooring LLC | CC-01 | 2022 | Renew by Nov 2, 2026 |
| Chuck Henderson Roofing LLC | CC-01 | 2007 | Active |
| Circo Tile Inc | CC-01 | 1995 | Active |
| Cityscape Development LLC | CC-01 | 2024 | Active |
| Clark's Sitemx CNC & FRMS LLC | CC-01 | 2005 | Active |
| Classic & Modern Flooring LLC | CC-01 | 2022 | Active |
| Classic Concept Building LLC | CC-01 | 2024 | Active |
| Clean Planet Junk Removal | CC-01 | 2024 | Active |
| Clean Slate Spokane LLC | CC-01 | 2024 | Active |
| Cleanco CPT & Air DCT CLNG | CC-01 | 2019 | Active |
| Cleanfix Pros LLC | CC-01 | 2026 | Active |
| Clearwater Const & MGMT LLC | CC-01 | 2006 | Active |
| Clifton Legacy Const LLC | CC-01 | 2025 | Active |
| Clubhouse Studio LLC | CC-01 | 2025 | Active |
| CM Cable LLC | CC-01 | 2026 | Active |
| CM Development & Const LLC | CC-01 | 2025 | Active |
| CMH Hardy Builders | CC-01 | 2026 | Active |
| Coca Construction LLC | CC-01 | 2018 | Active |
| Cole's Mechanical | CC-01 | 2024 | Renew by Nov 1, 2026 |
| Columbia Basin LD & DW SLN LLC | CC-01 | 2026 | Active |
| Columbia River Flooring LLC | CC-01 | 2026 | Active |
| Colusa Design & Remodeling | CC-01 | 2025 | Active |
| Colvico Inc | CC-01 | 1993 | Active |
| Coman Const & Excavation Inc | CC-01 | 2011 | Active |
| Compass Construction Inc | CC-01 | 2000 | Active |
| Complete Heating & Shtmtl Inc | CC-01 | 1995 | Active |
| Complete Homes LLC | CC-01 | 2023 | Active |
| Comran2 LLC | CC-01 | 2026 | Active |
| Concept Remodeling LLC | CC-01 | 2026 | Active |
| Concrete Fix LLC | CC-01 | 2023 | Active |
| Concrete Plus LLC | CC-01 | 2019 | Active |
| Condon Construction LLC | CC-01 | 2014 | Active |
| Condron Homes LLC | CC-01 | 2005 | Active |
| Confounded Construction LLC | CC-01 | 2023 | Active |
| Construction Assoc/Spokane Inc | CC-01 | 1991 | Active |
| Construction Consulting LLC | CC-01 | 2025 | Active |
| Construction MGMT Assoc LLC | CC-01 | 2010 | Active |
| Construction Services | CC-01 | 2018 | Active |
| Contempo Homes LLC | CC-01 | 2015 | Active |
| Contract Design | CC-01 | 2025 | Active |
| Cook Custom Homes Inc | CC-01 | 2006 | Active |
| Coopers Concrete Pumping LLC | CC-01 | 2022 | Active |
| Copeland Arch & Const Inc | CC-01 | 2005 | Active |
| Copestetic Contractors LLC | CC-01 | 2020 | Active |
| Copper Creek Pools Inc | CC-01 | 2004 | Active |
| Core Builders NW LLC | CC-01 | 2026 | Active |
| Core Const & Restoration LLC | CC-01 | 2026 | Active |
| Cornerstone Buildng & DSGN LLC | CC-01 | 2026 | Active |
| Cornerstone CNST & Dvlpmnt Inc | CC-01 | 2025 | Active |
| Cornerstone Landscape LLC | CC-01 | 2023 | Active |
| Cornerstone Outdoor Living LLC | CC-01 | 2025 | Active |
| Corrections Technology Group | CC-01 | 2024 | Active |
| Corridor Contractors LLC | CC-01 | 2016 | Renew by Nov 18, 2026 |
| Cottonwood Contracting LLC | CC-01 | 2022 | Active |
| Coulson Excavation & Const LLC | CC-01 | 2024 | Active |
| Count On It Construction LLC | CC-01 | 2013 | Active |
| Country Estate Fence Of Wa Inc | CC-01 | 2003 | Active |
| Country Homes Power Equipment | CC-01 | 1999 | Active |
| Country View Landscape LLC | CC-01 | 2022 | Active |
| Court Earp Interior Design Inc | CC-01 | 2025 | Active |
| Cousins Properties LLC | CC-01 | 2026 | Active |
| Coveted Coatings LLC | CC-01 | 2023 | Active |
| Coyote Creek Cabinets | CC-01 | 2025 | Active |
| Cozzetto Coin-Op LLC | CC-01 | 2023 | Active |
| CPD LLC | CC-01 | 2026 | Active |
| Craftech Construction LLC | CC-01 | 2020 | Active |
| Craig's Building Services | CC-01 | 2008 | Active |
| Craven Company LLC | CC-01 | 2015 | Active |
| Crescent Machine Works Inc | CC-01 | 1997 | Active |
| Cripps Excavation LLC | CC-01 | 2023 | Active |
| Crosslines Construction LLC | CC-01 | 2020 | Active |
| Crossroads Construction Inc | CC-01 | 1994 | Active |
| Croswhite Construction LLC | CC-01 | 2016 | Active |
| Crystal Peak Landscaping LLC | CC-01 | 2024 | Active |