| Basile Construction Inc | A | 1993 | Active |
| Basile Inc | B + C23 | 2011 | Active |
| Bayside Build Co | B | 2025 | Active |
| BB Contractors Inc | B | 2021 | Active |
| BC Development Services LLC | B | 2025 | Active |
| BDG Builders Inc | A, B | 2016 | Active |
| Beacon Restoration Inc | B | 2023 | Active |
| Bearth Builders | B | 2026 | Active |
| Becerra's HVAC LLC | B + C20 | 2003 | Active |
| Becker John Construction Inc | B | 1993 | Active |
| Bejar Gate Company | B + D28 | 1979 | Active |
| Bella Coastal Construction | B | 2019 | Active |
| Bentov Builders Inc | B | 2025 | Active |
| Berkley Construction Inc | B + C46 | 2004 | Active |
| Bernal Builders Inc | A, B | 2018 | Renew by Dec 31, 2026 |
| Best Dry Flood & Mold Specialists Inc | B | 2013 | Active |
| Best Way Construction Services | B | 2022 | Active |
| Better Place Design & Build | B + C27 | 2017 | Active |
| Better World Remodeling Inc | B | 2026 | Active |
| Beyond Landscaping | B + C27 | 2023 | Active |
| BGW Development Consultancy Inc | B | 2003 | Active |
| Big Ben Construction | B | 2021 | Renew by Dec 31, 2026 |
| Big Bully Turf Corporation | A, B | 2023 | Active |
| Big Cents Incorporated | B | 2007 | Active |
| Bingham Construction Company Inc | B | 2009 | Active |
| Biosources Inc | B + C10, C20 | 1997 | Active |
| Birchfield Construction Inc | B | 2008 | Active |
| Bison Constructors Inc | B | 2004 | Active |
| BJ Construction Group Inc | B | 2025 | Active |
| Bj's Construction Solutions Inc | B | 2021 | Active |
| BK Renovations LLC | B | 2023 | Active |
| Black Diamond Commercial Construction | B | 2010 | Active |
| Black I P O /Barnhart - Reese JV | B + C8 | 2008 | Renew by Nov 30, 2026 |
| Blanco Remodeling & Construction Company | B + C54 | 1976 | Active |
| Blessent Building LLC | B2 + C33 | 2025 | Active |
| Bloc Construction Inc | B + C2, D50 | 2019 | Active |
| Blue Belt Construction Inc | B | 2010 | Active |
| Blue Bridge Building & Construction | B | 2025 | Active |
| Blue Clover Construction Inc | B | 2023 | Active |
| Blue Horizon Builders Inc | B | 2005 | Active |
| Blue Moon General Contractor Inc | B | 2025 | Active |
| Blue Nose Construction | B + C7 | 2017 | Active |
| Blue Pacific Engineering Construction Inc | A, B + C8, C10, C27 +2 | 2003 | Active |
| Blue Point Construction Inc | B | 2008 | Renew by Dec 31, 2026 |
| Blue View Manufactured And Modular Inc | B | 2026 | Active |
| Blue Wave Environmental Engineering | A | 2024 | Active |
| Bob Jaynes Construction Inc | B | 1994 | Active |
| Bold Flood And Fire Construction | B | 2024 | Renew by Nov 30, 2026 |
| Borja | A, B | 2018 | Active |
| Bosa Development US Corporation | B | 2018 | Active |
| Boss Construction Company | B | 2021 | Active |
| Boulder Construction Inc | B + C8 | 2004 | Active |
| Bowie Construction Enterprise | B | 2025 | Active |
| Boyars Kitchen Cabinets | B + C6, C54 | 2004 | Active |
| BR Remodeling | B | 2026 | Active |
| Bri Electric Group Inc | A, B + C10, C27 | 1990 | Active |
| Bricehouse Construction Inc | B | 2013 | Active |
| Bright Company Inc | B | 2016 | Active |
| Brightside Inc | B + C10, C36 | 2012 | Renew by Dec 31, 2026 |
| Brizo Inc | B | 2017 | Active |
| Broadmoor Homes Southwest Inc | B | 1979 | Active |
| Brookeshire Development Inc | B + C36, C54, HAZ | 2005 | Active |
| Brookwood Plastering Inc | B + C9, C35 | 2003 | Active |
| Brown Builders Corporation | B | 2025 | Active |
| Brown Handyman And Remodeling | B2 | 2023 | Active |
| Brown R J General & Electrical Contracting Inc | B + C10 | 1999 | Active |
| Broyles Construction | B | 2023 | Active |
| BRR Contractors | B + D41 | 1994 | Active |
| BRZ Construction Inc | B | 2024 | Active |
| Buckley Builders Inc | B | 2022 | Active |
| Build Brothers Inc | B + C10, C20, C39 | 2014 | Active |
| Build M Construction Inc | B | 2024 | Active |
| Build Wise Contracting | B | 2006 | Active |
| Buildator | B | 2020 | Active |
| Buildcommercial.Com | B | 2006 | Active |
| Builders & Beyond LLC | B | 2023 | Active |
| Builders Collective LLC | B | 2026 | Active |
| Builders Express Inc | B | 1986 | Active |
| Builders Firm | B | 2023 | Active |
| Builders Now Inc | B | 1999 | Active |
| Building A Cut Above LLC | B | 2023 | Active |
| Building Resource Management Inc | B + C46 | 2008 | Renew by Nov 30, 2026 |
| Building SD | B | 2023 | Active |
| Building Solutions Construction Inc | B | 2017 | Active |
| Building Spaces Inc | B | 2020 | Active |
| Buildpros Inc | B | 2023 | Active |
| Buildtech Unlimited Inc | A, B | 2004 | Active |
| Built Green Construction Corp | B | 2023 | Active |
| Bumblebee Construction | B | 2021 | Active |
| Burger Construction And Property Services | B | 1987 | Active |
| Burke Joe Construction Inc | B | 1987 | Active |
| Burtek Energy LLC | A, B + C10, C20, C46 | 2016 | Active |
| Butterfield's General Building Contractors Inc | B + C5, C9 | 2000 | Active |
| BW Decoration Inc | B | 2025 | Active |
| Bycor General Contractors Inc | B | 1983 | Active |
| Byrom - Davey Inc | A, B + C8, C12, D12 | 2002 | Active |
| C & D Modular Construction LLC | B | 2022 | Active |
| C & G General Builders Inc | B | 2025 | Active |
| C & S D Construction Inc | B + C20 | 2003 | Active |
| C & W Diving Services Inc | A | 1980 | Active |