| Blessing Touch Painting LLC | RGC | 2026 | Active |
| BLG Inc | CGC2, RGC | 2019 | Active |
| Bloedel Custom Homes LLC | RGC | 2004 | Active |
| Blowing Dust Builders LLC | RGC | 2025 | Active |
| Blue Collar Construction NW LLC | RGC | 2021 | Active |
| Blue Line Construction LLC | RGC | 2024 | Active |
| Blue Rainbow Painting LLC | RGC | 2024 | Active |
| Blue River Renovation LLC | RGC | 2024 | Renew by Dec 18, 2026 |
| Bluepoint General Contracting LLC | CGC1, RGC | 2020 | Renew by Dec 1, 2026 |
| Bluetree Landscape Pro LLC | RGC | 2024 | Active |
| Bonilla Builders LLP | RGC | 2016 | Active |
| Brads Overhead Doors LLC | RGC | 2008 | Active |
| Brads Plumbing & Drain Cleaning LLC | RGC | 2020 | Active |
| Brecon Enterprises LLC | RGC | 2023 | Active |
| Bright Lawn Landscape Maintenance LLC | RGC | 2024 | Active |
| Brilliant Painting LLC | CGC2, RGC | 2017 | Active |
| Brittan Home Construction LLC | RGC | 2008 | Active |
| Broadleaf Construction LLC | RGC | 2018 | Active |
| Brother Nature LLC | RGC | 2019 | Active |
| Brothers Flooring LLC | RGC | 2015 | Active |
| Brown & Murray Industrial Contractors Inc | CGC1 | 1988 | Active |
| Brown Construction Solutions LLC | RGC | 2022 | Active |
| Bucket Of Dreams Painting LLC | RGC | 2024 | Active |
| Bug Eye Home Services LLC | RGC | 2025 | Active |
| Bugling Elk Construction LLC | RGC | 2022 | Active |
| Builders Future Inc | RGC | 2007 | Active |
| Builders Patrimony LLC | RGC | 2026 | Active |
| Buildex Construction LLC | RGC | 2024 | Active |
| Building United LLC | RGC | 2006 | Active |
| Butler NW Construction LLC | RGC | 2026 | Active |
| By Design Home Improvements LLC | RGC | 2024 | Active |
| Bybee & Associates Inc | RGC | 1993 | Active |
| C & A General Contractor LLC | RGC | 2012 | Active |
| C & G General Remodelers LLC | RGC | 2023 | Renew by Nov 17, 2026 |
| C & J Gutters LLC | CGC2, RGC | 2022 | Active |
| C & P Flooring LLC | RGC | 2022 | Renew by Nov 28, 2026 |
| C & R Builders Inc | RGC | 2010 | Active |
| C&A Concrete Construction LLC | RGC | 2022 | Active |
| C5 Construction LLC | RGC | 2024 | Active |
| Ca Quartz & Granite Countertops LLC | RGC | 2024 | Active |
| Cadenas Construction LLC | CGC2, RGC | 2023 | Active |
| Calderon Concrete LLC | RGC | 2018 | Active |
| Camjo Construction LLC | RGC | 2014 | Renew by Nov 7, 2026 |
| Campbell Communications Company | CGC2 | 1990 | Active |
| Campos Roofing LLC | RGC | 2026 | Active |
| Cande Roofing Construction LLC | RGC | 2025 | Active |
| Capcore LLC | RGC | 2020 | Active |
| Capitol City Door Inc | CGC2 | 1990 | Active |
| Capitol City General Construction LLC | RGC | 2024 | Active |
| Capitol Management Services & Associates Inc | RGC | 1995 | Active |
| Caputo Handyman Services LLC | RGC | 2020 | Active |
| Carbide Landclear LLC | RGC | 2023 | Active |
| Cardenas Construction Or LLC | RGC | 2026 | Active |
| Cardinal Roofing & Construction LLC | RGC | 2024 | Renew by Dec 10, 2026 |
| Cardona Framing Construction LLC | RGC | 2003 | Active |
| Carlos Painting & Drywall Inc | CGC2, RGC | 2005 | Active |
| Carpet Crafters Inc | RGC | 1991 | Active |
| Carter & Company Inc | CGC2 | 1994 | Active |
| Carter The Contractor LLC | RGC | 2017 | Active |
| Casa Bella Construction LLC | RGC | 2020 | Active |
| Casa Bella Painting Inc | CGC2, RGC | 2015 | Active |
| Casa Dutch Contracting LLC | RGC | 2021 | Active |
| Casabella Construction LLC | CGC2, RGC | 2021 | Active |
| Cascade Construction LLC | RGC | 2010 | Active |
| Cascade Fence & Landscape Construction LLC | RGC | 2026 | Active |
| Cascade Home Works LLC | RGC | 2026 | Active |
| Cascade Interiors Inc | CGC2, RGC | 1997 | Active |
| Cascade Lighting Service LLC | CGC2, RGC | 2013 | Active |
| Cascade Maintenance & Construction Co | RGC | 1992 | Active |
| Cascade Masonry Inc | CGC2 | 1981 | Active |
| Cascade Pine Construction LLC | RGC | 2026 | Active |
| Cascade Water Works LLC | CGC1 | 2020 | Active |
| Casebeer Construction LLC | RGC | 2010 | Active |
| Cashmere Homes Inc | RGC | 2010 | Active |
| Caslin Inc | CGC2 | 1987 | Active |
| Castillo Construction LLC | RGC | 2024 | Active |
| Castors Flooring LLC | RGC | 2018 | Active |
| CBK Amh Construction LLC | RGC | 2025 | Active |
| CC Concrete & Construction LLC | RGC | 2023 | Active |
| Cca Construction LLC | RGC | 2023 | Active |
| CD Redding Construction Inc | CGC2, RGC | 1985 | Active |
| CDM Fab LLC | RGC | 2020 | Active |
| Centerline Contracting LLC | RGC | 2025 | Active |
| Central Mechanical LLC | CGC2, RGC | 2018 | Active |
| Central Roofing Pro LLC | RGC | 2022 | Renew by Nov 21, 2026 |
| Centurion Construction Services LLC | CGC2, RGC | 2024 | Active |
| Cervantes M Construction LLC | RGC | 2020 | Active |
| CG Quality Homes Inc | RGC | 2018 | Active |
| Chabenquers Construction LLC | RGC | 2023 | Active |
| Champion Contracting LLC | RGC | 2022 | Active |
| Chavez Family Enterprises Inc | CGC2 | 2022 | Active |
| Chavez General Construction LLC | RGC | 2022 | Active |
| Chelos Cabinets LLC | RGC | 2022 | Active |
| Cherry City Excavation LLC | CGC2, RGC | 2010 | Active |
| Cherry City Plumbing Inc | CGC2, RGC | 1983 | Active |
| Cherry City Roofing LLC | RGC | 2026 | Active |
| Cherry Valley Home Services LLC | RGC | 2025 | Active |
| Cherryhill Roofing & Construction LLC | RGC | 2020 | Active |
| Cheyennes Asphalt LLC | RGC | 2019 | Active |
| China Creek Construction LLC | CGC2, RGC | 2019 | Active |