| 8a Construction Services Inc | B | 2008 | Active |
| A G Construction | B + C8, C10, C29 | 2001 | Active |
| A I C Interior Inc | B | 2002 | Active |
| A2z Builders Group Inc | B | 2026 | Active |
| Abc Resources Inc | A + C12, C32 | 1988 | Active |
| Abl Contracting Inc | B | 2024 | Active |
| Aboveground Solutions Inc | B | 2023 | Active |
| Ace Engineering Inc | A, B + ASB, C21 | 1991 | Active |
| Acosta Pipeline Inc | A + C36 | 2020 | Active |
| Adams John I Construction | B | 2016 | Active |
| Advanced Technology Inc | B + C10 | 2020 | Active |
| Ag Building And Remodeling Inc | B | 2026 | Active |
| Ahome Construction Inc | B | 2020 | Active |
| Alliance Communication Services Inc | B + C7 | 1998 | Active |
| Allwayss | A | 2022 | Active |
| American General Builders | B | 2023 | Active |
| Amins Construction Inc | B | 2026 | Active |
| Arijet Corporation | A + C7 | 2008 | Active |
| Austin/Jones Corp | B + C33 | 1992 | Active |
| Balto Development Inc | B | 2020 | Active |
| Bc7 Construction Inc | B + C36 | 2019 | Active |
| Best Choice Building & Developing | B | 2021 | Active |
| BGW Building Products Inc | B | 2026 | Active |
| Blue Haven Pools | B + C53 | 2002 | Renew by Dec 31, 2026 |
| Brilliant Building Group | B | 2025 | Active |
| Buena Vista Contractors | B | 2023 | Active |
| Burke Dees Engineering Constructors LLC | A | 2016 | Active |
| C B Home Construction | B | 2011 | Active |
| C B Home Construction Inc | B | 2020 | Active |
| C M Construction General Contractors Inc | B | 1993 | Active |
| C P Construction Co Inc | A + C12, C34, C42 | 1975 | Active |
| Cadre Construction LLC | B | 2026 | Active |
| Cai Fall Protection Systems | A | 2021 | Active |
| Cali Construction Renovation LLC | B2 + C15 | 2012 | Active |
| Calpoint Construction Inc | B | 2025 | Active |
| Cap Angeles Construction Inc | B | 2024 | Active |
| Cash Grading Contractors Inc | A | 1998 | Renew by Nov 30, 2026 |
| Castle Construction And Development Inc | B | 2026 | Active |
| CBX Construction Inc | B + C7, C10 | 2025 | Active |
| Cgo Construction Company Inc | A + C21 | 1988 | Active |
| Choice Builder Solutions LLC | A, B | 2017 | Active |
| CJ Construction Services | B | 2025 | Active |
| Clean Power Construction | B + C10 | 2018 | Active |
| Commercial Concrete Constructors Inc | A, B + C8 | 2005 | Active |
| Comtract Communications Inc | B + C7 | 1990 | Active |
| Constru One Inc | A, B | 2012 | Active |
| Construx West Inc | B | 2025 | Active |
| Correa Construction | B + C8 | 1985 | Active |
| Cox Commerical & Industrial Inc | B | 2005 | Active |
| CPL Construction Inc | B | 2024 | Renew by Dec 31, 2026 |
| Crown Communications Engineering Inc | A | 2020 | Active |
| Crown Construction Group Inc | B | 2025 | Active |
| Custom Carpentry | B | 2003 | Active |
| Custom Homes Construction | B + C20, C38 | 2018 | Active |
| D & D Contractors Inc | B | 2011 | Active |
| D G I Structures Inc | B | 2014 | Active |
| Daylight Solar Energy Corp | B + C10, C46 | 2007 | Active |
| DB Construction Inc | B | 2018 | Active |
| Dc2 Construction | B + C15 | 1999 | Active |
| Dchristjan Fine Cabinetry | B + C33 | 2000 | Active |
| DDL Construction Inc | B | 2025 | Active |
| DDPT Inc | B + C54 | 2025 | Active |
| Delta Group Inc | A | 2023 | Active |
| Design Windows & Doors Inc | B + C17 | 2008 | Active |
| Designer Works | B + C23, C51 | 2013 | Active |
| Devine Looks Home Design & Construction | B | 2021 | Active |
| DH Remodel & Construction Inc | B | 2002 | Active |
| Diamond Air Services Inc | B + C20, C43 | 2018 | Active |
| Digital Technologies Inc | B + C7, C10 | 2007 | Active |
| Doja Inc | A, B + C12, C21, HAZ | 1990 | Active |
| Duo Cap Construction Inc | A, B | 2025 | Active |
| Earth & Structural Development LLC | B + C53 | 2026 | Active |
| Earthscapes | A + C27 | 2017 | Active |
| East Los Angeles Community Union The | B | 1991 | Active |
| Elite Building Contractors Inc | B | 2021 | Active |
| Ems Renovations | B2 + C22 | 2024 | Renew by Dec 31, 2026 |
| Enhanced Roofing Inc | B + C39 | 2024 | Active |
| Envirokinetics Inc | A | 2003 | Active |
| Er5 Construction Inc | B | 2024 | Active |
| Evies International Inc | B | 2008 | Active |
| Excell Construction Inc | B | 2016 | Active |
| Fairchild Plumbing & Mechanical Inc | A + C16, C36 | 1990 | Renew by Nov 30, 2026 |
| FH II Homebuilders Inc | B | 2013 | Active |
| Fixd Construction Co | B | 2025 | Active |
| Ford Brothers Framing Inc | B | 2016 | Active |
| Fossa Group Inc | B | 2021 | Active |
| Foundation Design & Build | B | 2026 | Active |
| Foxtrot Construction | A, B + C10, D40, HAZ | 2018 | Active |
| Freedom 21 Contractors Inc | B | 2021 | Active |
| Fries B Construction Inc | B | 1997 | Active |
| Fullmer Construction | B | 1975 | Active |
| G V C O Construction Inc | A + D12 | 2013 | Active |
| Garcon Construction Inc | A + C8 | 2008 | Active |
| GC Construction & Fire Protection Inc | A, B + C16 | 2023 | Active |
| Gibin Remodeling Inc | B + C6, C15 | 2017 | Active |
| Golden Leaf Construction Inc | B + C53 | 2006 | Active |
| Golden Star Construction Services | B | 2006 | Active |
| Golden West Construction Group | B | 2024 | Active |
| Green Remodel Solutions | B + C10 | 2016 | Active |
| Gregg Electric Inc | A + C10, C31 | 1961 | Active |