| Aa Modern Construction Inc | B | 2022 | Active |
| Air Max Inc | B + C10, C20 | 2016 | Active |
| Al's Engineering Inc | A | 2009 | Active |
| Altergott Construction Inc | B | 1990 | Active |
| Aria Elite Inc | B | 2025 | Active |
| Arm Construction & Development Inc | B | 2025 | Active |
| Bellaglousa Construction | B | 2010 | Active |
| Best Choice Construction LLC | B | 2024 | Active |
| Better Call Mac Remodeling & Home Services | B | 2026 | Active |
| Bint Construction Inc | B | 2023 | Active |
| BK Engineering Corporation | A, B + C10, C12, C20 +2 | 2003 | Active |
| Black Orchid General Construction | B | 2018 | Active |
| Brent Engineering Inc | A | 2002 | Active |
| Bricon Commercial Contractors Inc | B | 1992 | Renew by Dec 31, 2026 |
| Brixton Builders Inc | B | 1993 | Active |
| Brouwer Construction Company Inc | B + C27 | 1990 | Active |
| Builder One Construction | B | 2022 | Active |
| Buwalda Construction Company Inc | B | 1978 | Active |
| C A P O Beach Construction Inc | B | 1999 | Active |
| Ca Mathes Construction LLC | A | 2008 | Active |
| California Building Care Inc | B + C6 | 1982 | Active |
| California Custom Cellars Inc | B | 2026 | Active |
| Canelo Construction | A, B + C27 | 2018 | Active |
| Cecal Enterprises Inc | B | 2003 | Active |
| Cella Construction Group Inc | B | 2022 | Active |
| Coastal Woodworks Inc | B | 2003 | Active |
| Concept One Homes Inc | B | 2014 | Active |
| Contrex Inc | B + C27 | 1988 | Active |
| Cornerstone Family Investment Inc | B | 1979 | Active |
| Crupi Construction Inc | B | 2004 | Active |
| CT Construction Services Inc | B | 2018 | Active |
| Custom Framing Services Inc | B | 2010 | Active |
| Cyrus Contractors Inc | B + C46 | 2015 | Active |
| D & B General Contractors | B | 2007 | Active |
| D2x Build Inc | A, B + C10 | 2025 | Active |
| DCT Windows & Glass Doors | B | 2020 | Active |
| Designing Women Of Orange County | B | 2023 | Active |
| Dickenson Construction Inc | B | 1991 | Active |
| E & H Construction Co Inc | B | 1988 | Active |
| Elliott Floor Covering Inc | B + C15 | 2002 | Active |
| Evolution Design & Construction Inc | B | 2022 | Active |
| Excell Excavating Inc | A + C12, C21, HAZ | 1992 | Renew by Nov 30, 2026 |
| Fenn Construction & Development Inc | B | 1991 | Active |
| Fry Consulting And Contracting LLC | B | 2025 | Active |
| Gates Custom Interiors Inc | B | 2000 | Active |
| Gaudino Group Inc | B | 2014 | Active |
| General Repair / Installation Inc | B | 1998 | Active |
| Golden Design Associates Inc | A, B | 1993 | Active |
| Golden State General Contracting | A, B | 2025 | Active |
| Goodsell/Wilkins, Inc | B | 2011 | Active |
| Green Idea Builder Corp | B + C10 | 2021 | Active |
| Hayden Development Inc | B | 1993 | Active |
| Holland Mike Construction Inc | B | 2007 | Active |
| Home Upgrade Group | B + C33 | 1997 | Active |
| Homeman Inc | B | 2014 | Active |
| Inland Flooring Contractors Inc | B + C15, C54 | 1997 | Active |
| Innovative Interiors | B | 2026 | Active |
| J F Electrical Inc | B + C10 | 1982 | Active |
| JB Custom Construction Inc | B | 2023 | Active |
| JFB Custom Homes | B | 2018 | Active |
| JM Construction Company | B | 2024 | Active |
| JM Prime Builders Inc | B | 2026 | Active |
| King Chris Construction Inc | B | 2001 | Active |
| La Barge Construction Inc | B | 2025 | Active |
| Landcrafters Inc | B + C27, C53 | 1998 | Active |
| Levinne Builders | B | 2026 | Active |
| Lucky Smartscape | B | 2026 | Active |
| Luxiero Homes Inc | B | 2019 | Active |
| M & M Construction Inc | B | 1990 | Active |
| Maroon Construction LLC | B | 2022 | Active |
| MTD Restoration Inc | B | 2009 | Active |
| Myers R S Company | B | 1994 | Active |
| Nassco Construction | B | 2006 | Active |
| Nexus Design And Construction | B | 2008 | Active |
| Noeticorp | A, B | 2018 | Active |
| Outdoor Concepts Landscape & Design Inc | A, B + C27, C53 | 2004 | Active |
| Pacific Builder Inc | A, B | 2012 | Active |
| Pacific Cal Construction Inc | B | 2005 | Active |
| Pacific Sundance Construction Inc | B | 1989 | Active |
| Pipeline Restoration Plumbing Inc | B + C5, C6, C36 | 2011 | Active |
| Preferred Construction Group | B + C9 | 2025 | Active |
| Process Construction Services Inc | B | 2013 | Active |
| PV Maintenance Inc | A | 1993 | Active |
| Quality Build Construction Solutions Inc | A | 2023 | Active |
| R G General Contracting Inc | B | 2009 | Active |
| R2b Smart Construction | B + C10 | 2026 | Active |
| Rav Co Engineering Inc | A, B | 2002 | Active |
| Recodo Operating Company LLC | B | 2017 | Active |
| Red Rock General Construction Inc | B | 1998 | Active |
| Redcom Construction Inc | B | 2018 | Active |
| Richardson Custom Homes LLC | B | 2023 | Active |
| Ritz Flooring Plus Inc | B + C15 | 2018 | Active |
| RN Construction | B | 1994 | Renew by Dec 31, 2026 |
| S & J Ventures Inc | B | 2001 | Active |
| SC Pacific Group Inc | B | 2013 | Active |
| Seagull Construction Oc | B | 2026 | Active |
| Seniors & Juniors Inc | B + C10 | 2018 | Active |
| Seven Design & Build Inc | B | 2026 | Active |
| Splice Construction Co Inc | A, B + C8 | 2022 | Active |
| SSK Custom Framing Inc | B | 2014 | Active |