| 1crew | CC-01 | 2026 | Active |
| 1stop Interior | CC-01 | 2023 | Active |
| 2nd Story Construction Inc | CC-01 | 2006 | Active |
| 360 Construction LLC | CC-01 | 2026 | Active |
| 360 Degree Construction LLC | CC-01 | 2026 | Active |
| A A Anderson Co Inc | CC-01 | 1987 | Active |
| A S Remodeling LLC | CC-01 | 2015 | Active |
| A1-Mt Baker Drywall Inc | CC-01 | 2004 | Active |
| A1designbuild | CC-01 | 2025 | Active |
| Aa Decon | CC-01 | 2022 | Active |
| Abatement & Decontam Spec LLC | CC-01 | 2018 | Active |
| Abbott's All Aspects LLC | CC-01 | 2022 | Active |
| Absolute Asbestos Services LLC | CC-01 | 2022 | Active |
| Advanced Combustion Sys Inc | CC-01 | 1993 | Renew by Dec 9, 2026 |
| Agate Bay Construction LLC | CC-01 | 2015 | Active |
| Agate Northwest LLC | CC-01 | 2016 | Active |
| Air Plus | CC-01 | 2020 | Active |
| Aircraft Hangars NW LLC | CC-01 | 2026 | Active |
| Alderwood Builders LLC | CC-01 | 2016 | Active |
| Alexei Ford Design Build LLC | CC-01 | 2021 | Active |
| All American Marine Inc | CC-01 | 2017 | Active |
| All Generation Pro Pntng LLC | CC-01 | 2023 | Active |
| Alliance Properties 2000 LLC | CC-01 | 2002 | Active |
| Alpha Technologies Srvcs Inc | CC-01 | 2004 | Active |
| Alpine | CC-01 | 2025 | Active |
| Altavista Homes LLP | CC-01 | 2016 | Active |
| Alterra LLC | CC-01 | 2026 | Active |
| Amigos Painting | CC-01 | 2016 | Active |
| Anchor Point Construction LLC | CC-01 | 2019 | Active |
| Anderson-Pickard Const LLC | CC-01 | 2026 | Active |
| Andro Building Maintenance LLC | CC-01 | 2025 | Active |
| Anvil Construction LLC | CC-01 | 2023 | Active |
| Apex Builderz LLC | CC-01 | 2026 | Active |
| Apex Custom Builders LLC | CC-01 | 2020 | Active |
| Apple Hardscape & Lawn CR LLC | CC-01 | 2026 | Active |
| Applied Painting Solutions LLC | CC-01 | 2023 | Active |
| Aqua-Terr Systems Incorporated | CC-01 | 2021 | Active |
| Arcus Construction | CC-01 | 2023 | Active |
| Armor Installations LLC | CC-01 | 2018 | Active |
| Armstrong & Allen Const LLC | CC-01 | 2022 | Active |
| Arrow Const & Excavation Inc | CC-01 | 2001 | Active |
| Arrow Homes LLC | CC-01 | 2019 | Active |
| Art Works Construction LLC | CC-01 | 2013 | Active |
| Artisan Fine Finishing LLC | CC-01 | 2013 | Active |
| Astal Construction Inc | CC-01 | 2004 | Active |
| Atj Roofing LLC | CC-01 | 2024 | Active |
| Atlas Woodworks LLC | CC-01 | 2018 | Active |
| Atta Boy WDS GTRS & PSR CLNG | CC-01 | 2022 | Active |
| Augusta Lawn Care Services | CC-01 | 2017 | Active |
| Aurus Construction LLC | CC-01 | 2021 | Active |
| Aven Construction Inc | CC-01 | 2001 | Active |
| Aviles Construction | CC-01 | 2020 | Active |
| B R Crew Inc | CC-01 | 2006 | Active |
| B&B Lucky Dog Services LLC | CC-01 | 2022 | Active |
| Bainbridge Construction LLC | CC-01 | 2019 | Active |
| Baker Ridge Construction LLC | CC-01 | 2020 | Active |
| Bakerview Maint & MGMT LLC | CC-01 | 2019 | Active |
| Bal Construction Inc | CC-01 | 2004 | Active |
| Baldwincorp | CC-01 | 2024 | Renew by Oct 30, 2026 |
| Banana Slug Landscaping LLC | CC-01 | 2026 | Active |
| Bay City Construction Company | CC-01 | 2006 | Active |
| BDSG Construction LLC | CC-01 | 2026 | Active |
| Bellingham Bay Builders Inc | CC-01 | 2004 | Active |
| Bellingham Best Builders LLC | CC-01 | 2023 | Active |
| Bellingham Garage Door RPR LLC | CC-01 | 2020 | Active |
| Bellingham Handy Van | CC-01 | 2020 | Active |
| Bellingham Heating & Cooling | CC-01 | 2020 | Renew by Nov 7, 2026 |
| Bellingham Home Works LLC | CC-01 | 2023 | Active |
| Bellingham Indoor Air LLC | CC-01 | 2023 | Active |
| Bellingham Junk Remvl SVC LLC | CC-01 | 2021 | Active |
| Bellingham Millwork Supply Co | CC-01 | 2001 | Active |
| Bellingham Roof & Gutter CLNG | CC-01 | 2018 | Active |
| Bentwood Carpentry Inc | CC-01 | 2023 | Active |
| Bespoke Cabinetry & Design | CC-01 | 2023 | Active |
| Best Bellingham Homes LLC | CC-01 | 2020 | Active |
| Betty's Son LLC | CC-01 | 2026 | Active |
| Bham Bizzy Bee | CC-01 | 2023 | Active |
| Bham Exterior | CC-01 | 2026 | Active |
| Big Bob's Dig & Build | CC-01 | 2024 | Active |
| Birch Mechanical LLC | CC-01 | 2025 | Active |
| Black Beard LLC | CC-01 | 2019 | Active |
| Blank Slate Construction LLC | CC-01 | 2021 | Active |
| Blue Hill Building Inc | CC-01 | 2015 | Active |
| Blue Remodeling | CC-01 | 2022 | Active |
| Blue Star Welding LLC | CC-01 | 2008 | Renew by Dec 11, 2026 |
| Blythe Mechanical Inc | CC-01 | 2019 | Active |
| BM Construction LLC | CC-01 | 2019 | Active |
| Bne Construction LLC | CC-01 | 2017 | Active |
| Bobadilla Landscaping LLC | CC-01 | 2022 | Active |
| Boss Construction Inc | CC-01 | 1992 | Active |
| Brehan Carpentry LLC | CC-01 | 2015 | Active |
| Brenton Re | CC-01 | 2024 | Active |
| Brindle Ridge Construction LLC | CC-01 | 2017 | Active |
| Bristlecone Builders LLC | CC-01 | 2020 | Active |
| Brite-Way Window Service | CC-01 | 2022 | Active |
| Brown Dog Builders LLC | CC-01 | 2008 | Active |
| Buck Buck Construction LLC | CC-01 | 2024 | Active |
| Buildable Design LLC | CC-01 | 2026 | Active |
| Bulldog Landscaping LLC | CC-01 | 2021 | Active |
| Burlingame Contracting | CC-01 | 2020 | Active |