| Carter Building & Contrng LLC | CC-01 | 2013 | Active |
| Cascade Fire Protection | CC-01 | 2026 | Active |
| Cascade General Const LLC | CC-01 | 2021 | Active |
| Castell Construction LLC | CC-01 | 2026 | Active |
| CBF Excavating LLC | CC-01 | 2024 | Active |
| CH Concrete LLC | CC-01 | 2025 | Active |
| CH General Construction LLC | CC-01 | 2024 | Active |
| CH Real Estate Inc | CC-01 | 2020 | Active |
| Challenge Accepted Const LLC | CC-01 | 2025 | Active |
| Champion Roofing LLC | CC-01 | 2022 | Active |
| Chandlers' Painting LLC | CC-01 | 2016 | Renew by Dec 1, 2026 |
| Chavez Concrete LLC | CC-01 | 2012 | Active |
| Chavez Woodworks LLC | CC-01 | 2022 | Active |
| Cheesse Lawn Care LLC | CC-01 | 2024 | Active |
| Cherokee Handyman LLC | CC-01 | 2023 | Active |
| Chervenell Const Co | CC-01 | 1975 | Active |
| Chinook Heating & Air Inc | CC-01 | 2001 | Active |
| Clean Image LLC | CC-01 | 2016 | Active |
| Clearspan Steel LLC | CC-01 | 2021 | Active |
| CLT Lawn Care LLC | CC-01 | 2015 | Active |
| Coffey Refrigeration | CC-01 | 1991 | Active |
| Collie Custom Homes | CC-01 | 2026 | Active |
| Columbia Basin Drywall LLC | CC-01 | 2017 | Active |
| Columbia Plastering Inc | CC-01 | 2021 | Active |
| Columbia Property Solutns LLC | CC-01 | 2026 | Active |
| Columbia River Const LLC | CC-01 | 2025 | Active |
| Columbia River Elect Maint INC | CC-01 | 2015 | Active |
| Complete Facilities Maint | CC-01 | 2022 | Active |
| Complete Facilits Maint L L C | CC-01 | 2026 | Active |
| Concrete Custom Services LLC | CC-01 | 2023 | Active |
| Concrete Elite LLC | CC-01 | 2021 | Active |
| Concrete Redemption LLC | CC-01 | 2026 | Active |
| Contractors Equip Maint Co | CC-01 | 2011 | Active |
| Contreras Lawn Service LLC | CC-01 | 2018 | Active |
| Core Excavation LLC | CC-01 | 2024 | Active |
| Cornell Construction LLC | CC-01 | 2024 | Active |
| Coulee Reach Builders | CC-01 | 2026 | Active |
| CR Solutions LLC | CC-01 | 2018 | Active |
| Culligan | CC-01 | 2014 | Renew by Dec 22, 2026 |
| Custom Care Mowing LLC | CC-01 | 2021 | Active |
| Cutting Edge PNTG & Const LLC | CC-01 | 2024 | Active |
| D & D Tri Rivers Excavatg Inc | CC-01 | 2004 | Active |
| Dan Ostler Enterprises LLC | CC-01 | 2023 | Active |
| Davis Unlimited LLC | CC-01 | 2017 | Active |
| Dayco Inc | CC-01 | 1990 | Active |
| DCT General Construction LLC | CC-01 | 2022 | Active |
| De La Cruz Cooling Service | CC-01 | 2016 | Active |
| Deko Builders LLC | CC-01 | 2017 | Active |
| Deniz General Construction LLC | CC-01 | 2021 | Active |
| Dependable Plbg/Wtr Cndtng Inc | CC-01 | 2000 | Active |
| Desert Bloom Landscapes LLC | CC-01 | 2024 | Active |
| Desert Wind Development LLC | CC-01 | 2018 | Active |
| Design Drywall LLC | CC-01 | 2026 | Active |
| Devisee Makers LLC | CC-01 | 2025 | Active |
| Devoted Builders LLC | CC-01 | 2005 | Active |
| DH Siding LLC | CC-01 | 2020 | Active |
| Diamond Bath & Remodel LLC | CC-01 | 2026 | Active |
| Diehard Quality Services Inc | CC-01 | 2025 | Active |
| Dirt Stars LLC | CC-01 | 2021 | Active |
| Division 7 LLC | CC-01 | 2021 | Active |
| Dk&G Development, LLC | CC-01 | 2018 | Renew by Dec 28, 2026 |
| DM Grant Concrete & Const Inc | CC-01 | 2007 | Active |
| DNL Roofing LLC | CC-01 | 2022 | Active |
| Doors & Speclties Instlrs LLC | CC-01 | 2011 | Active |
| Double C Construction LLC | CC-01 | 2026 | Active |
| Dreamer's Construction LLC | CC-01 | 2019 | Active |
| Dreamscape Masnry & Garden LLC | CC-01 | 2017 | Active |
| Drilling & Sawing Services Inc | CC-01 | 2005 | Active |
| Duraglaze USA LLC | CC-01 | 2017 | Active |
| Dusty CLN SRV Llc/Qltyzn BL FN | CC-01 | 2022 | Active |
| E & L Framing LLC | CC-01 | 2021 | Active |
| E M Drywall LLC | CC-01 | 2011 | Active |
| E&S Painting & Renovations LLC | CC-01 | 2021 | Active |
| E.S Pro-Shield Pntg/Flrng LLC | CC-01 | 2019 | Active |
| Eagle Rock Quarry Inc | CC-01 | 2013 | Active |
| Easton Construction LLC | CC-01 | 2007 | Active |
| Eddie's Handyman LLC | CC-01 | 2017 | Active |
| Eden Lndscpg & Tree Serv LLC | CC-01 | 2021 | Active |
| Ee Traffic Management LLC | CC-01 | 2024 | Active |
| El Jefe Construction LLC | CC-01 | 2025 | Active |
| Elegant Residences Const LLC | CC-01 | 2016 | Renew by Dec 11, 2026 |
| Elite Brothers Const LLC | CC-01 | 2025 | Active |
| Ellison Earthworks LLC | CC-01 | 2021 | Active |
| Emi Group LLC | CC-01 | 2026 | Active |
| Empire Construction | CC-01 | 2018 | Active |
| Empire Electric USA | CC-01 | 2023 | Active |
| Eo Construction LLC | CC-01 | 2025 | Active |
| Eop Builders LLC | CC-01 | 2016 | Active |
| Ernie's Landscaping LLC | CC-01 | 2021 | Active |
| Ethington Homes & Remodel | CC-01 | 2023 | Active |
| Evergreen Probuild LLC | CC-01 | 2023 | Active |
| Everwood Finish Carpentry LLC | CC-01 | 2025 | Active |
| Everybody's Mike LLC | CC-01 | 2025 | Active |
| Evolution Building Group LLC | CC-01 | 2026 | Active |
| Evolution Landscape MGMT LLC | CC-01 | 2024 | Active |
| Faith Works Construction LLC | CC-01 | 2026 | Active |
| Fantastic Color LLC | CC-01 | 2025 | Active |
| Fellowship Construction | CC-01 | 2025 | Active |
| Fill-A Dream LLC | CC-01 | 2024 | Active |
| Finer Side Construction LLC | CC-01 | 2015 | Active |