| 2x4 Renovation & Remodel | B | 2025 | Active |
| A B A Alarm Company Inc | B + C10 | 2004 | Active |
| A L Painting And Decorating | B + C33 | 2004 | Active |
| A&A Builder Inc | B | 2025 | Active |
| Aaadvantage Construction Co | B + ASB | 2011 | Active |
| Abcon Incorporated | B + C8 | 1999 | Active |
| Accord Electric Corporation | A + C10 | 1990 | Active |
| Advanced Constructors Corp | A, B + C29 | 1992 | Active |
| Ae Construction | B | 2018 | Active |
| Ae Solutions Inc | A + C10 | 2023 | Active |
| Affinity Restoration Group Inc | B + C36 | 2011 | Active |
| Ag Construction | B + C20 | 2020 | Active |
| Alcoa Electrical Contractor Inc | A + C10, C31 | 1995 | Active |
| Alcoa Traffic Control Inc | A + C10, C31 | 2015 | Active |
| Alcoa Traffic Services Inc | A + C10, C31 | 2026 | Active |
| Alley Cat Development Inc | B | 2008 | Active |
| Ally Construction Services LLC | B | 2024 | Active |
| Alpha Painting, Inc. | B + C33 | 2002 | Active |
| Always Green Synthetic Grass Inc | B + C27 | 2023 | Active |
| Ambiente Construction & Design Corp | B | 2010 | Active |
| American Restore Inc | B + C8, C10, C27 +5 | 2012 | Active |
| Ams Builders Inc | B | 2008 | Active |
| Anastasi Builders | B | 2022 | Renew by Dec 31, 2026 |
| Ancon | A + HAZ | 1990 | Active |
| Angelus Waterproofing And Restoration Inc | B + C33, C39, D51 | 1984 | Active |
| Aquapure Pools | B + C53, D35 | 1988 | Active |
| Assured Roofing Pros Inc | B + C10, C39 | 2018 | Active |
| Athiva Services Inc | B + C45 | 2004 | Active |
| Atlas Environmental Engineering Inc | A + HAZ | 1996 | Renew by Nov 30, 2026 |
| Automated General Contracting Inc | B + C10 | 1991 | Active |
| Avalon Studio Design Build Corp | B | 2023 | Active |
| Avis Dwellings | B | 2026 | Active |
| Baak Development Inc | B | 2017 | Active |
| Bates Development Inc | B | 2021 | Active |
| BC Drilling Inc | A | 2021 | Active |
| Bear Flag Construction Services | B | 2019 | Active |
| Betko Inc | B + C51 | 2011 | Active |
| Beyond Surface Inc | B + C10 | 2017 | Active |
| Boardman Construction LLC | B | 2023 | Active |
| Boostrom Construction Inc | B | 2000 | Active |
| Bossie Developers, Inc. | B | 2025 | Active |
| Bowen J Construction Inc | B | 2023 | Active |
| Boyes Construction Inc | B | 1989 | Active |
| Brady Construction And Design Inc | B + C10 | 2010 | Active |
| Brady F W Development Inc | A, B + HAZ | 1999 | Active |
| Buchanan Company Inc | A + D24 | 1999 | Active |
| C & C Homes Inc | B + C7 | 2024 | Active |
| C B S Construction Services Inc | B + C33 | 1996 | Active |
| C S Construction Co | B | 1999 | Active |
| C S L Building Inc | B | 2024 | Active |
| C&C Power Company Inc | A + C10 | 2025 | Active |
| Caldwell Builders | B | 2008 | Active |
| California Builders Remodeling & Real Estate Inc | B + C15, C54 | 2017 | Active |
| California Custom Creations Inc | B | 2002 | Active |
| California Design Wood Products Inc | B | 1990 | Active |
| Carroll Ronald Lawrence General Contractors Inc | B | 1993 | Active |
| Carter General Construction Inc | B | 2012 | Active |
| Case | B + C10 | 2006 | Active |
| Cassidy's Construction Company | B | 2019 | Active |
| Cec Construction Engineering | A, B + C10, C34, C36 +1 | 2022 | Active |
| Christidis General Contracting Inc | B + C33 | 1990 | Active |
| Christopher Construction | B | 2017 | Active |
| Churchill Construction | B | 2021 | Active |
| Cimabue Construction | B | 2023 | Renew by Dec 31, 2026 |
| Cimmino Mikel Inc | B | 2015 | Active |
| CJ Shores Construction | B | 2024 | Active |
| Class Act Builders Inc | B | 2016 | Active |
| Classic Construction Services | B | 2004 | Renew by Nov 30, 2026 |
| CMS | B + C36 | 2010 | Active |
| CN Construction Corp | B | 2026 | Active |
| Coastal Construction & Consulting Inc | B + C33 | 2022 | Active |
| Coastal Oasis Construction Inc | B | 2025 | Active |
| Coastal Outdoor Services LLC | B | 2025 | Active |
| Coastline Construction & Awning Co Inc | B + C47, D03 | 1990 | Active |
| Colburn P Construction Inc | B | 1993 | Active |
| Collins Builders Incorporated | B | 1988 | Active |
| Construction | B + C36, C54 | 2011 | Active |
| Contorelli Construction Inc | A, B + C10 | 1976 | Active |
| Cornerstone Custom Patio Covers Inc | B | 1995 | Active |
| Costiero Contracting Inc | A, B + C36 | 2017 | Active |
| Crystal Pools | B + C53, D35 | 2005 | Active |
| Cureco Inc | B | 1998 | Active |
| Custom Modular Services Corporation | B | 1989 | Active |
| Custom Nest LLC | B | 2021 | Active |
| CVCR Inc | A, B | 2025 | Active |
| D R T Construction Inc | B | 1974 | Active |
| D'Ambra Construction | B | 1973 | Active |
| Dain Construction Inc | B + C9 | 1993 | Active |
| Daley Construction Inc | B + C8 | 2025 | Active |
| Dedicated Construction Services Inc | B | 2008 | Active |
| Desatoff Dave Backhoe Service Inc | A | 1993 | Active |
| Design Hive Construction | B | 2024 | Renew by Nov 30, 2026 |
| Diversified Painting Inc | B + C33 | 1999 | Active |
| Do It Right Construction Inc | B | 1998 | Active |
| Done Right Restoration LLC | B | 2026 | Active |
| Drake Construction Inc | A, B + C6, C10 | 2006 | Active |
| Dynacon | B + C36 | 1990 | Active |
| Dynamic Construction Services Inc | A | 2011 | Active |
| E And C Prestige Construction Inc | B | 2026 | Active |
| E B S Contractors Inc | B + C6 | 2006 | Active |