| Bynum And Associates Corporation | B + C8, C29 | 1990 | Active |
| Bynum Construction Inc | B + C8, C29 | 2026 | Active |
| C D G Builders Inc | B | 2008 | Active |
| C D M Construction Inc | B | 2019 | Active |
| C F P Fire Protection Inc | B + C10, C16 | 2008 | Renew by Oct 31, 2026 |
| Ca Eagle Construction Inc | A, B | 2023 | Active |
| Ca20 Developers Inc | A, B | 2023 | Active |
| Cal - Pro Contractor's Inc | B + C9, C10, C36 | 2013 | Active |
| Caleb's General Contracting Inc | B | 2024 | Active |
| Calico Building Services Inc | B | 1994 | Renew by Nov 30, 2026 |
| California Flooring Service Inc | B2 + C15, C54 | 2000 | Active |
| California Pacific Homes Inc | B | 2000 | Active |
| Callegend Homes Inc | B | 2024 | Active |
| Caltec Corp | A, B + C10 | 2005 | Active |
| Candelmo Development Inc | B | 2010 | Active |
| Cap Edge Restoration | B + C22 | 2024 | Renew by Nov 30, 2026 |
| Capital Edge Construction | B | 2022 | Active |
| Capstone Designo/Build | B | 2024 | Active |
| Carey W Construction Co | B | 1997 | Active |
| Carl Manire Company LLC | B | 1978 | Active |
| Casanova Renovation | B + D06 | 2017 | Active |
| Casco Contractors LLC | B | 2001 | Active |
| Cavendish Hydrogen | B | 2019 | Active |
| CD Home Construction Inc | B | 2025 | Active |
| Cedar Tree Construction Inc | B | 2019 | Active |
| Central Air Inc | B + C20 | 2021 | Active |
| Chase Building Corp | B | 2026 | Active |
| CHD Design Groups Inc | B | 2011 | Active |
| Chosun Construction Inc | B | 2019 | Active |
| City Ventures Construction Inc | B | 2015 | Active |
| Civarc Builders Inc | B | 2026 | Active |
| Classic Restoration & Construction | B | 1988 | Active |
| Clbld Corp | B | 2024 | Active |
| Clifford & Cruz Inc | B | 1985 | Active |
| CNC Contractors Corp | B | 2013 | Active |
| Coast Construction Services Inc | A, B + C10 | 2004 | Active |
| Coast Maintenance Inc | B | 2017 | Active |
| Coast Pacific Builders Inc | B | 1962 | Active |
| Coastal Pacific Construction Inc | B | 1985 | Active |
| Coastline Design & Construction Inc | B | 2000 | Active |
| Colco Properties Inc | B | 1991 | Active |
| Commercial Interior Resources | B + C15 | 1987 | Active |
| Compass Land Advisors Inc | B | 2026 | Active |
| Construct 1 One Corp | B | 1994 | Active |
| Construction Development Management Inc | B | 2015 | Active |
| Construction Group Of America Corp | B | 2018 | Active |
| Contemporary Home Builders Inc | B | 1992 | Active |
| Copper Construction LLC | B | 2019 | Active |
| Covenant Design Build & Construction Management Inc | B + C10, C36 | 2026 | Active |
| CQMS Construction Quality Management Solutions Inc | A | 2023 | Active |
| D H I Construction Inc | B + C15 | 2008 | Active |
| D T M Construction Company Inc | B + C8, C29 | 2002 | Active |
| D Y M Builders Group Inc | B | 2020 | Active |
| Dae Electric | B | 2017 | Active |
| Dalton R M Corporation | B | 2000 | Active |
| Dashing Properties Inc | B | 2017 | Active |
| David James Custom Homes | B | 2001 | Active |
| De La Rosa Maintenance Contractors Inc | B + C15 | 2012 | Active |
| Delcon Inc | B | 2009 | Active |
| Devi Construction Inc | B | 2021 | Active |
| Dm2 Ventures LLC | B | 2026 | Active |
| DMK Construction | B + C10, D16, D28 | 2017 | Active |
| Don Weber Construction Inc | B | 2021 | Active |
| Double River Construction LLC | B | 2026 | Active |
| Ea Design And Build LLC | B | 2021 | Active |
| Eama Flooring Inc | B + C15, C54 | 2021 | Active |
| Echo Housing Corp | B | 2026 | Active |
| Edison Power Constructors Inc | A + C10, D31 | 2013 | Active |
| Elegant Construction Inc | A, B + C8, C12, C13 +3 | 2019 | Active |
| Elegant Home Improvement Inc | B | 2019 | Active |
| Elevated Construction | B | 2026 | Active |
| Elite Builders Corp | B | 2023 | Active |
| Elite Restoration & Construction Services LLC | B + C33 | 2026 | Active |
| Elite Structural Solutions LLC | B | 2025 | Active |
| Elser Constructors Inc | A | 1994 | Active |
| Empireworks | B + C33 | 2010 | Active |
| Empireworks | B + C33 | 2013 | Active |
| Empireworks | B | 2021 | Active |
| Empireworks | B + C33 | 2009 | Active |
| Empireworks | B + C33 | 1994 | Active |
| Empireworks | B + C33 | 2009 | Active |
| Energy Services Of California | B | 2026 | Active |
| Environmental Support Technologies | A + C57, HAZ | 2023 | Active |
| Esn Construction & Remodeling | B | 2026 | Active |
| Evans Industrial Inc | A | 2026 | Active |
| Everbuilt Construction & Restoration LLC | B | 2026 | Active |
| Evergreen Construction Services Inc | B | 2013 | Active |
| Ezix Inc | B | 2022 | Active |
| Facility Makers Inc | B + C8, C51, C60 +1 | 2011 | Active |
| Far West Industries | B | 1977 | Active |
| Fasakha Inc | B | 2019 | Active |
| Fec Future Contractors And Engineers Inc | A, B | 2011 | Active |
| Federal Environmental & Demolition Services | A, B + ASB, C21, C22 +1 | 2026 | Active |
| Filco Construction Inc | B | 2025 | Active |
| First Choice Construction Inc | B | 2022 | Active |
| First Roofing Contractor Inc | B + C39 | 2022 | Active |
| Five Point Communities Management Inc | A, B | 2010 | Active |
| Fixacal Inc | B + C7, C10 | 2017 | Active |
| Fixall Construction Company Inc | B | 2007 | Active |
| Forefront Builders Group | B | 2025 | Active |