| Bennett Management Company LLC | CGC2, RGC | 1988 | Active |
| Benson Development Co LLC | RGC | 2000 | Active |
| Bergeson Boese & Associates Inc | CGC1, RGC | 1991 | Active |
| Berning Construction LLC | RGC | 2026 | Active |
| Best Septic Inc | RGC | 2003 | Active |
| Better Homes Group LLC | RGC | 2005 | Active |
| Between The Cracks Construction LLC | CGC2, RGC | 2023 | Active |
| Bill Slaughter Inc | CGC2, RGC | 1978 | Active |
| Bineham Construction Inc | CGC1, RGC | 1991 | Active |
| Birzer Home Inspection LLC | RGC | 2006 | Active |
| BK Building Company LLC | RGC | 2024 | Active |
| Black Diamond Carpentry LLC | RGC | 2024 | Renew by Dec 11, 2026 |
| Black Diamond Fence & Deck Incorporated | RGC | 2011 | Active |
| Black Forest Tree Service LLC | RGC | 2025 | Active |
| Black Oak Timber LLC | RGC | 2025 | Active |
| Black Rabbit Home Improvement LLC | RGC | 2026 | Active |
| Blackley Inc | RGC | 2011 | Active |
| Blade Works LLC | CGC2, RGC | 2005 | Active |
| Blue Sun Contracting LLC | RGC | 2024 | Active |
| Bobolink Construction LLC | RGC | 2026 | Active |
| BR Slayden Builders Inc | CGC2, RGC | 2012 | Active |
| Breeden Bros Inc | RGC | 1972 | Renew by Dec 4, 2026 |
| Brian Murry Construction LLC | RGC | 1999 | Active |
| Brincade Surfaces LLC | RGC | 2015 | Active |
| Brinkers LLC | RGC | 2018 | Active |
| Brocks Refrigeration LLC | RGC | 2022 | Renew by Nov 22, 2026 |
| Bronco Plumbing & Rooter LLC | RGC | 2023 | Active |
| Brown Contracting Inc | CGC2, RGC | 1996 | Active |
| Bruce Construction LLC | RGC | 2018 | Renew by Dec 11, 2026 |
| Bruce Wiechert Custom Homes Inc | RGC | 1994 | Active |
| Brunsons Construction LLC | RGC | 2023 | Active |
| Brushed Metal Fabrication LLC | RGC | 2026 | Active |
| Brushworks Northwest LLC | RGC | 2024 | Active |
| Bryant Construction LLC | CGC2, RGC | 2016 | Active |
| BS Drywall LLC | RGC | 2026 | Active |
| BTW Construction LLC A Limited Liability Company From Colorado | RGC | 2025 | Active |
| Bucks Sanitary Service Inc | RGC | 2023 | Active |
| Build Boy LLC | RGC | 2025 | Active |
| Building Envelope System Techs LLC | CGC2, RGC | 2020 | Active |
| Buildlogic LLC | RGC | 2024 | Active |
| Built On Point LLC | RGC | 2025 | Active |
| Built2last Construction LLC | RGC | 2022 | Active |
| Burnham Construction Inc | RGC | 2007 | Active |
| C & C Technologies LLC | CGC1 | 2016 | Active |
| C & K Petroleum Equipment Co | CGC2 | 1990 | Active |
| C & M Pump Co | RGC | 1985 | Active |
| C & S Developments Inc | RGC | 2009 | Active |
| Cambys Painting LLC | RGC | 2025 | Active |
| Carter Family Tile And Stone Incorporated | RGC | 2022 | Active |
| Casa Noble Construction LLC | RGC | 2026 | Active |
| Cascadia Construction And Plumbing LLC | CGC2, RGC | 2015 | Active |
| Castile Construction Inc | RGC | 1999 | Active |
| Cb&E Maintenance And Construction LLC | RGC | 2026 | Active |
| CCM Associates LLC | RGC | 2019 | Active |
| CDM Residential LLC | RGC | 2024 | Active |
| CDP Properties LLC | CGC1, RGC | 2024 | Active |
| Cedar Construction LLC | RGC | 2023 | Active |
| Cedar Creek Granite Inc | RGC | 2011 | Active |
| Cedar Moon Structures LLC | RGC | 2025 | Active |
| Celtic Cowboy Construction & Handyman Services LLC | RGC | 2026 | Active |
| CGH Enterprises LLC | RGC | 2022 | Active |
| Chad Cannon Construction LLC | RGC | 2019 | Active |
| Chandler Metal Works LLC | CGC2, RGC | 2020 | Active |
| Chandlers Tree Service LLC | CGC2 | 2020 | Active |
| Chase Fence And Construction LLC | RGC | 2023 | Active |
| Chittim Enterprises I Inc | CGC2, RGC | 1985 | Active |
| Chittim Enterprises II Inc | CGC2, RGC | 1997 | Active |
| Chivas Construction Inc | RGC | 2024 | Active |
| Circle And Square Construction Co | RGC | 2025 | Renew by Dec 10, 2026 |
| Clarence Young Construction LLC | RGC | 2022 | Active |
| Classic Design & Construction LLC | CGC2, RGC | 2006 | Active |
| CLC Construction LLC | RGC | 2026 | Active |
| Clean Coats Painting LLC | RGC | 2020 | Active |
| Cleanline Painting LLC | RGC | 2019 | Active |
| Cloudnine Woodcraft LLC | RGC | 2024 | Active |
| Coburg Road Quarry LLC | CGC2 | 2007 | Active |
| Coles Fire And Gas Services LLC | RGC | 2026 | Active |
| Columbia Painting & Restoration Co | RGC | 2003 | Active |
| Commercial Air Inc | CGC2, RGC | 1995 | Active |
| Commercial Construction Solutions LLC | RGC | 2019 | Active |
| Commercial Controls Company LLC | CGC2 | 2013 | Active |
| Community Arborist LLC | RGC | 2019 | Active |
| Construct Divine Concepts LLC | RGC | 2025 | Active |
| Constructive Construction LLC | RGC | 2015 | Active |
| Cool Heat Heating And Cooling LLC | RGC | 2020 | Active |
| Core Property Services LLC | RGC | 2025 | Active |
| Cork & Beam LLC | RGC | 2022 | Active |
| CPR Construction LLC | RGC | 2023 | Active |
| Craftmore Homes LLC | RGC | 2021 | Active |
| Create Daily Inc | RGC | 2025 | Active |
| Creative Contractor Solutions LLC | RGC | 2011 | Active |
| Creative Design Masonry Inc | RGC | 1996 | Active |
| CRN Construction LLC | RGC | 2006 | Renew by Dec 26, 2026 |
| Cross Brothers Inc | CGC1, RGC | 2002 | Active |
| Cruz Innovative LLC | RGC | 2016 | Active |
| Custom Retaining Walls Corp | CGC2, RGC | 2008 | Active |
| Cymru Classic Carpentry LLC | RGC | 2024 | Renew by Dec 3, 2026 |
| CZ Erb Construction & Property Improvements LLC | RGC | 2020 | Active |
| Da S Handyman Service LLC | RGC | 2022 | Active |
| Dan Sikes Construction LLC | RGC | 2018 | Active |