| Adu Designers & Builders | B | 2008 | Active |
| All Inclusive Construction Services | B | 2021 | Active |
| All Inclusive Environmental Services Inc | A | 2024 | Renew by Oct 31, 2026 |
| All Points Restoration And Construction | B | 2017 | Active |
| Allpro Home Solutions | B | 2024 | Active |
| Anthony Q Construction Inc | B | 1989 | Active |
| Bergman Build,llc | B | 2013 | Active |
| Black Rock Construction Company | A | 2010 | Active |
| Blue Core Construction Inc | B | 2006 | Active |
| Board Grip Inc | B | 1993 | Active |
| Bravo Building Concepts | B | 2019 | Active |
| Brea Roofing | B | 2003 | Active |
| Building Construction Specialties Inc | B | 2008 | Active |
| Burch Construction Management | B | 2025 | Active |
| Burk Allen Inc | A | 2019 | Active |
| Burns & McDonnell West Engineering | A, B | 2023 | Active |
| C & L Refrigeration Corporation | B | 1979 | Active |
| C&N Development Inc | B | 2026 | Active |
| Cal Native Construction Inc | B | 2024 | Active |
| Caliber Construction And Restoration Inc | B | 2008 | Active |
| Caliber Construction Inc | B | 1992 | Active |
| California Flooring & Construction | B | 2024 | Active |
| California High Speed Partners | A | 2026 | Active |
| Carroll Building Solutions Inc | B | 2017 | Active |
| CB Construction Group Inc | B | 2025 | Active |
| Cicero Engineering Incorporated | A | 2002 | Active |
| Classic Refrigeration Socal Inc | B | 2019 | Active |
| Colas Construction USA Inc | A | 2021 | Active |
| Colas Rail Inc | A | 2021 | Active |
| Contract Services Group Inc | B | 2007 | Active |
| Coolsys Commercial & Industrial Solutions Inc | B | 2024 | Active |
| Country Road Homeowners Association | B | 2017 | Active |
| Csa Constructors Inc | B | 1977 | Active |
| D & D Development Company | B | 1977 | Active |
| D N W Construction Inc | B | 1980 | Active |
| D3 Development Group | B | 2019 | Active |
| Design Plus 2000 Inc | B | 2005 | Active |
| Design Story Construction Inc | B | 2024 | Active |
| Dexore Inc | A, B | 2021 | Active |
| Diversified Communications Services LLC | B | 1988 | Active |
| Dohrman Construction Inc | B | 2006 | Active |
| Donlon Builders | B | 1985 | Active |
| Driveway Masters Inc | A, B | 1989 | Active |
| Enetech Incorporated | B | 2011 | Active |
| Erick Allen Inc | B | 1991 | Active |
| Ers Construction Inc | B | 2021 | Active |
| Exceed Construction | B | 2026 | Active |
| Faith Industries Construction Inc | B | 2007 | Active |
| First Electric Systems Inc | B | 2014 | Active |
| Fl5 Construction Inc | B | 2019 | Active |
| Foyel R E Inc | B | 2019 | Active |
| G & W Builders Inc | A, B | 1984 | Active |
| G B Construction Inc | A, B | 1982 | Active |
| Global Hotel Network Inc | B | 2008 | Active |
| Green Point Design Build Services Inc | A, B | 2023 | Active |
| Griffith / Dutra Joint Venture | A, B | 2008 | Active |
| Griffith Company | A, B | 1929 | Active |
| Griffith-Aldridge Joint Venture | A, B | 2025 | Active |
| Griffith-Atkinson JV | A, B | 2020 | Active |
| Griffith-Stacy And Witbeck A Joint Venture | A | 2023 | Active |
| Griffith-Vanguard Joint Venture | A, B | 2018 | Renew by Nov 30, 2026 |
| Ground Up Development | B | 2015 | Active |
| Hakanson Construction Inc | B | 1977 | Active |
| Harbor Environmental Group Inc | A, B | 2009 | Active |
| Hercules Const & Maintenance Inc | B | 2017 | Active |
| Him Development Inc | B | 2019 | Active |
| Honore Richard C Construction Inc | B | 2001 | Active |
| Ideal Renovations Group Inc | B | 2021 | Active |
| Implementation Solutions Services Inc | B | 2004 | Active |
| Inex Builders | B | 2016 | Active |
| Insight Environmental Engineering & Construction Inc | A, B | 2005 | Active |
| Insight Pacific LLC | A | 2024 | Active |
| Integrity Builders Inc | B | 2007 | Active |
| Jilk Heavy Construction Inc | A, B | 1995 | Active |
| Jimenez Floors | B | 2018 | Active |
| JN Modern Home Construction Inc | B | 2024 | Active |
| Kci General Contractors Inc | B | 2003 | Active |
| Kelp Construction Inc | B | 2010 | Active |
| Kenneth Group Construction | B | 2007 | Active |
| KPRS Construction Services LLC | A, B | 1998 | Active |
| L.E Construction Inc | B | 2009 | Active |
| Laundry Concepts | B | 2010 | Active |
| Liberty Painting And Restoration Inc | B | 2005 | Active |
| Lighthouse Property Services Inc | B | 2004 | Active |
| Man Metal Design Inc | B | 1999 | Active |
| Marzola Construction Co | B | 1978 | Active |
| Max Construction Inc The | B2 | 2024 | Active |
| MC Gee Construction | B | 2001 | Active |
| Mega Plastering Systems Inc | B | 2008 | Active |
| Mend Co Inc | B | 2018 | Active |
| Nelson Company Construction Inc | B | 2017 | Active |
| Nevell-Standard JV LLC | B | 2015 | Active |
| O D I C Environmental | A | 2008 | Active |
| Oil Crew Service Inc | B | 2022 | Active |
| P G T M Construction Inc | A, B | 2017 | Active |
| Pacific Industrial Electric | A, B | 1992 | Active |
| Piko Construction Inc | B | 2007 | Active |
| Pine Cone Design & Development Inc | B | 2025 | Active |
| Pramira Inc | A, B | 2020 | Active |
| Preferred Ceilings Inc | A, B | 1995 | Active |