| 1st Choice Construction & Restoration Inc | B | 2022 | Active |
| A & E Builders Inc | B | 2013 | Active |
| A & G General Construction Inc | B | 2013 | Active |
| A & R Builders Inc | B | 2021 | Active |
| A - 1 Certified Electric Inc | B + C10 | 2005 | Active |
| A And M Construction Inc | B + C10 | 2018 | Active |
| A B A Construction | B | 2023 | Active |
| A E Construction Services Inc | B | 2007 | Active |
| A M B Group Inc | B | 2016 | Active |
| A V A Contractor Inc | B | 2019 | Active |
| A1 Builders Inc | B | 2017 | Active |
| A2 Construction Inc | B | 2025 | Active |
| Aa1 Graphics & Signs | B + C45 | 2016 | Renew by Oct 31, 2026 |
| Abc Building Care Inc | A, B + C36 | 2010 | Renew by Nov 30, 2026 |
| Abelian Construction Inc | B + C8 | 2014 | Active |
| Accord Construction Inc | A, B + C8 | 1990 | Active |
| Ace Construction & Maintenance Inc | B + C8, C10 | 2009 | Active |
| Acosta & Sons Sewer Contractor | A + C42 | 1971 | Active |
| Adu RC Builders | B | 2021 | Active |
| Adv Constructions Inc | B | 2026 | Active |
| Ae3 Construction Co | B | 2025 | Active |
| Aeroscopic Environmental Inc | B | 1991 | Active |
| Afra Construction | B | 2024 | Active |
| Aghaian Hovik I And Associates Inc | B | 1987 | Active |
| Agmj Construction Inc | B + C51 | 2023 | Active |
| Ajemco Inc | B | 2012 | Active |
| Akobra Construction Inc | A, B + C10, C36 | 2023 | Active |
| Aleco Homes | B | 2021 | Active |
| Aleph Design Development LLC | B | 2025 | Active |
| Alex Hart Design Build | B | 2025 | Active |
| All Seasons Renovation And Roofing Inc | B + C39 | 2026 | Active |
| Allstate Marble LLC | B | 2025 | Active |
| Alpha Four Construction | B | 2025 | Active |
| Alt Construction Inc | B | 2019 | Active |
| Altek Engineering Inc | A, B | 2009 | Active |
| Am Design Inc | B + D28 | 2024 | Active |
| American Construction And Management Inc | B | 2021 | Active |
| American Robust Construction | B + C10 | 2026 | Active |
| American Sun | B + C10 | 2025 | Active |
| Ampere Construction | B + C10 | 2025 | Active |
| Ank Inc | B | 2023 | Active |
| Apex Design And Construction | B | 2022 | Active |
| Aramco Construction Inc | B + C36 | 1981 | Active |
| Arc Line Builders Inc | B | 2026 | Active |
| Ardeh Construction | B | 2025 | Active |
| Armex-Gc | B | 2016 | Active |
| Armscraft Construction Inc | B | 2007 | Active |
| Armstrong Roy Construction Inc | B | 1977 | Active |
| Arpi Construction Inc | B | 2024 | Active |
| Arrakeen Construction & Electric Inc | B + C10 | 2019 | Active |
| Arris Custom Builders | B | 2025 | Active |
| Art B Construction Inc | B | 2021 | Active |
| Arz & Associates Inc | B | 2025 | Active |
| Aurora Electric & Construction Inc | B + C10, C36 | 1995 | Active |
| Avaks Construction Inc | B | 2012 | Active |
| Avanti Building Contractors | A, B + C10, C36 | 2022 | Renew by Nov 30, 2026 |
| Avassa Construction Inc | A, B + C8 | 2024 | Active |
| Axes Contracting Inc | B | 2014 | Active |
| Axiomprint, Inc. | B | 2019 | Active |
| Axis Construction Inc | A, B + C10, C20, C36 | 1988 | Active |
| Azas Engineering Inc | A | 2025 | Active |
| B M O Kitchen & Bathroom Renovation Inc | B | 2018 | Active |
| B Y L D LTD | B | 2019 | Active |
| Bay Lighting & Design Inc | B + C10 | 2004 | Active |
| Bedros Electric Inc | B + C10 | 1981 | Active |
| Bella Kitchens And Bath Design | B | 2006 | Active |
| Benchmark Arts Inc | B | 2026 | Active |
| Beneficial Builders Group Inc | B + C10, C20, C36 | 2026 | Active |
| Beneficial Construction Group Inc | B + C10, C20 | 2021 | Active |
| Berno Inc | B | 2012 | Active |
| Beta Investments And Contracts Inc | B + C10, C20, C36 | 1986 | Active |
| BG Construction & Remodeling Inc | B + C54 | 2003 | Active |
| Blackrock Home Builders | B | 2025 | Active |
| Blackstone Partners Inc | B | 2019 | Active |
| Brand Pacific Construction | A, B | 2014 | Active |
| Bright Diamond Maintenance Facility LLC | B | 2024 | Active |
| Bronze - House Development Inc | B | 2003 | Active |
| Buba LLC | B | 2023 | Active |
| Build Best Construction Inc | B | 2009 | Active |
| Built Well Restoration & Construction Co Inc | B | 2014 | Active |
| Burt Engineering Construction | A | 2022 | Active |
| Bwell Construction | B | 2024 | Active |
| C&C Construction & Remodeling Inc | B | 2025 | Active |
| Cal Power Aid Inc | B + C10 | 2016 | Active |
| Cal Vantage Construction Inc | B | 2019 | Active |
| California Smart Builders | B + C10 | 2026 | Active |
| Capital Contractors Inc | B | 2021 | Active |
| Cardani Jack Construction Inc | A, B + C5, C8, C9 +6 | 2001 | Active |
| Cenmill Inc | B | 2010 | Active |
| Century Construction Builders Inc | B + C20, C36 | 2012 | Active |
| Channel Island Construction Inc | B | 2010 | Active |
| Citadel Environmental Services Inc | A + HAZ | 2023 | Active |
| City Of Angels Construction Inc | B | 2026 | Active |
| Civic Group Construction Inc | B + C54 | 1991 | Active |
| Clemton Builders Inc | B | 2015 | Active |
| CMGT Construction Company | B | 1984 | Active |
| Comfort Makers | B + C20, C36, D62 | 2004 | Active |
| Connecting Electric Inc | B + C10 | 2005 | Active |
| Constravel Inc | B | 1997 | Active |
| Construction | B | 2019 | Active |