| 1 Solorio Inc | B | 1987 | Active |
| 1st Choice Design & Development | B | 1989 | Active |
| 4:13 GC Services | B | 2024 | Active |
| 911 Drain Lines And Plumbing | A, B | 2025 | Active |
| 911 Restoration Of Orange County | B | 2014 | Active |
| 911 Restoration Of Socal | B | 2025 | Active |
| A S M Construction | B | 2024 | Active |
| A's Contractor Inc | B | 2009 | Active |
| Aaa Construction & Remodeling Inc | B | 2026 | Active |
| Adco South Roofing And Waterproofing Inc | B | 2019 | Active |
| Addison - Miller Inc | A, B | 2015 | Active |
| Advanced Home Energy Solutions | B | 2014 | Active |
| Advantage Door & Hardware Inc | B | 2004 | Active |
| Affinity Property Management Inc | B | 2016 | Active |
| All American Racking Solutions LLC | B | 2026 | Active |
| All Around Underground Contractors Inc | A | 2006 | Active |
| All Care Plumbing Inc | B | 2017 | Active |
| All Stars Builders Inc | B | 2022 | Active |
| All-Safe Pool Fence & Covers | B | 1993 | Active |
| Allied Cleanrooms | B | 1996 | Active |
| Am Sunshine General Contractor Inc | B | 2024 | Active |
| American Integrated Resources Inc | B | 2010 | Active |
| Amort Construction Inc | B | 1995 | Active |
| Amtek Construction | A, B | 1986 | Active |
| Applied Wall Systems | B | 2016 | Active |
| Appro Electric Inc | B | 2019 | Active |
| Araujo Design And Construction Group Inc | B | 2003 | Active |
| Ashmore Construction Co | B | 1997 | Active |
| At Ijk Construction Inc | B | 2022 | Active |
| Atg Construction | B | 2025 | Active |
| Aus Build Inc | B | 2001 | Active |
| Aztec Supply | B | 1978 | Active |
| B A P K O Metal Inc | B | 1978 | Active |
| Balboa Builders LLC | B | 2025 | Active |
| Bangert Retail Technologies North America Inc | B | 2014 | Active |
| Barger Custom Homes LLC | B | 2021 | Active |
| Bassett Building Inc | B | 2013 | Active |
| Beneville Construction Incorporated | B | 2009 | Active |
| Better Living Construction & Development | B | 2022 | Active |
| Better Remodels | B | 2018 | Active |
| Bia Associates | A, B | 2026 | Active |
| Bishop Inc | A, B | 2001 | Active |
| Blanco Company Inc | B | 2012 | Active |
| Bodhi Elite Inc | A, B | 2025 | Active |
| Borruel Construction Inc | B | 2023 | Active |
| Boyd Construction Inc | B | 2024 | Active |
| Breda Sal Flooring Inc | B | 1977 | Active |
| BRM General Construction | B | 2025 | Active |
| Brown Bradley Construction Inc | B | 2015 | Active |
| C H M Construction Inc | B | 1986 | Active |
| C&R Property Service Builder | B | 2019 | Active |
| Cairney & Sons Construction Corporation | B | 1979 | Renew by Nov 30, 2026 |
| Cairney Construction Corporation | B | 1992 | Renew by Nov 30, 2026 |
| Cal Select Builders Inc | B | 1990 | Active |
| Cal West Construction Group Inc | B | 2008 | Active |
| California Contents Inc | B | 2019 | Active |
| California Income Property Inc | B | 1994 | Active |
| California Smart Systems | B | 2024 | Active |
| California Smartscape - Pacific Paradise Pools | B | 2017 | Active |
| California Smartscape Pacific Paradise Pools | B | 2023 | Active |
| Carl Raymond Company Inc | B | 2006 | Active |
| Carri Construction | A, B | 1977 | Active |
| Casas F Pro Landscape Inc | B | 2018 | Active |
| CCM Construction Inc | B | 2005 | Active |
| Celoseal Roofing Inc | B | 1970 | Active |
| Century American Development Corporation | B | 1985 | Active |
| Certapro Painters Of Orange County | B2 | 2013 | Active |
| Cik Power Distributors LLC | A, B | 2012 | Active |
| Clark Development Group Inc | B | 1998 | Active |
| Classic Cabinet Refinishing | B | 1988 | Renew by Nov 30, 2026 |
| Clayton Roofing Inc | B | 1990 | Active |
| CLG General Construction Inc | B | 2025 | Active |
| Coastal Luxe Install LLC | B | 2026 | Active |
| Coastal Underground | A | 2026 | Active |
| Coastline Plumbing Solutions | B | 2013 | Active |
| Com Door & Hardware Inc | B | 2002 | Active |
| Commercial Construction Solutions Inc | B | 1991 | Active |
| Commercial Renovation Construction Inc | B | 2023 | Active |
| Compass Services | B | 2010 | Active |
| Concrete Sealing Concepts | B | 2022 | Active |
| Construction Repair | B | 1989 | Active |
| Construction Solutions USA LLC | B | 2026 | Active |
| Craig Beinlich Construction | B | 2007 | Active |
| Crane Rental Service Inc | A | 1976 | Active |
| Cutler Construction Services Inc | B | 2007 | Active |
| Cy Empire Construction Inc | B | 2023 | Active |
| Cybertech Development Inc | B | 2025 | Active |
| D & O Construction Inc | A, B | 2013 | Active |
| D A C Contractor Inc | B | 2009 | Active |
| D A V General Construction | B | 2017 | Active |
| D H M Construction Inc | B | 2006 | Active |
| D L S Builders | B | 1985 | Active |
| De La Torre Commercial Interiors Inc | A, B | 1999 | Active |
| Defi Construction Inc | B | 2024 | Active |
| Degennaro Plumbing Inc | B | 2005 | Active |
| Depinho Roofing Inc | B | 1994 | Active |
| Design Development Construction Inc | B | 2026 | Active |
| Designworks Construction | B | 2018 | Active |
| DMG SC LLC | B | 2025 | Active |
| Doezie R W Construction Incorporated | B | 2004 | Active |