| 3 Brothers Construction Services | B | 2024 | Active |
| A & R Quality Construction Inc | B | 2019 | Active |
| A B C Custom Wood Shutters Inc | B | 2004 | Active |
| Ace Capital Engineering | A, B + C7 | 2020 | Active |
| Advanced Geosolutions Inc | A | 2005 | Active |
| All States Construction | B | 2023 | Active |
| Allied Builders Group Inc | B | 1992 | Active |
| Ameriside | B | 2013 | Active |
| Anp Networks Corporation | B + C7, C10 | 2018 | Active |
| Apex Floor Covering | B + C15, C54 | 2026 | Active |
| Aqe Restoration Construction | A + C12 | 2025 | Active |
| Artistic Build | B | 2025 | Active |
| Artistic Maintenance Inc | A, B + C27 | 1995 | Active |
| Artyx Construction | B | 2024 | Active |
| Ashco Building Services Inc | B | 2018 | Active |
| Beautiful Canaan Construction LLC | B | 2019 | Renew by Dec 31, 2026 |
| BL Cunningham Enterprises | A, B + C16, C36 | 2022 | Active |
| Buildernic Corporation | A, B | 2024 | Active |
| Builtpro Painting And Construction | B + C33 | 2022 | Active |
| C3 Corporate Management Inc | B | 2020 | Active |
| Camali Corporation | B + C10, C20 | 1995 | Active |
| Catalan Golden Builders Corp | B | 2024 | Active |
| Chewning Industries | B | 2018 | Renew by Dec 31, 2026 |
| Christle James Construction Inc | B | 2015 | Active |
| CMZ Construction Inc | B | 2020 | Active |
| Coastal Kitchens And Baths Inc | B | 1993 | Renew by Dec 31, 2026 |
| Construction And Electric Jesus Inc | B + C10 | 2016 | Active |
| Cornerstone Group | B | 2026 | Active |
| Creekside Custom Construction LLC | B + D28, D35 | 2006 | Active |
| Curnowornever Enterprises LLC | B | 2023 | Active |
| D & G Rhodes Construction Inc | B | 1988 | Active |
| Dad's Home Services & Construction Inc | B | 2001 | Active |
| Davis Paul Restoration Of South Orange County | B | 1997 | Active |
| Dean Concrete Inc | B + C8 | 2021 | Active |
| Deason Tom Building Company Inc | B | 2013 | Active |
| Designed Technical Solutions Inc | B + C10, C20, C36 +1 | 2006 | Active |
| Dineen Corporation The | B | 2000 | Active |
| Elevation Vertical Gardens & Living Walls Inc | B + C27 | 2020 | Active |
| Elmer Construction Inc | B | 2025 | Active |
| Emergency Home Solutions Inc | B | 2013 | Active |
| Eng Construction | B | 2023 | Active |
| Epic Construction USA Inc | B | 2022 | Active |
| Epic Interiors And Construction Inc | B | 2008 | Active |
| Everged LLC | A | 2026 | Active |
| Everlasting Renovations | B | 2022 | Active |
| Every Class Construction Inc | B + C33 | 2024 | Active |
| Floor Concepts | B + C15 | 2012 | Active |
| Garage Remedy | B | 2011 | Active |
| Gladwell Contracting Solutions Inc | B | 2013 | Active |
| Green Tree Investment Enterprises Inc | B + C15 | 2024 | Renew by Nov 30, 2026 |
| Hardy & Harper Inc | A + C8, C12 | 1963 | Active |
| Harvest Remodeling Services Inc | B | 2025 | Active |
| House Of Flooring & Cabinets | B + C15, C54 | 2006 | Active |
| Inter-Sky Inc | B | 2008 | Active |
| J & Company Renovation And Design LLC | B2 | 2025 | Active |
| J J Y Construction Co | B | 2008 | Active |
| James Remodeling Inc | B + C36 | 2017 | Active |
| JL Cobb Inc | B + C33 | 2025 | Active |
| K S R Concepts Remodeling | B2 | 2022 | Active |
| L Square Design & Build | B | 2022 | Active |
| La Strada Contracting Company | A | 2000 | Active |
| La Strada Pipeline Inc | A | 2016 | Active |
| Laguna General Construction Inc | B | 2016 | Active |
| Landscape Specialists Inc | A, B + C27 | 2008 | Renew by Nov 30, 2026 |
| Laszlo Kurucz Construction | B | 2026 | Active |
| Lighthouse Design Build Corp | B | 2023 | Active |
| Local Quality Services Inc | B + C33 | 2015 | Active |
| Luna Build LLC | B | 2020 | Active |
| Lynch Robert Design | B + C15, C54 | 1985 | Active |
| Magnano Robert E Incorporated | B | 1990 | Active |
| Maj Construction Inc | B | 2026 | Active |
| Marina Construction Inc | A, B + HAZ | 2023 | Active |
| Mastercare Protection And Cleaning Inc | B + C15, D52 | 1993 | Active |
| MD Rubberized Crackfill LLC | A | 2013 | Active |
| Midcrest Construction Inc | B | 2022 | Active |
| Mina Construction Management & Estimating Services Inc | B | 2022 | Active |
| Mobilenet Services Inc | B | 2021 | Active |
| Mofid Building | B | 2023 | Active |
| Mohr Pacific Inc | B | 2017 | Active |
| Moisture And Mold Detection Inc | B | 2015 | Active |
| Mr Gomez Construction Inc | B | 2021 | Active |
| Natures Image Inc | A + C27 | 1996 | Active |
| Nhance East Orange County Wood Finishing | B + C33 | 2022 | Active |
| Obdan Ramirez Construction Foundation And Anibelation | B | 2026 | Active |
| Oc Pavers And Turf | B + D06 | 2015 | Active |
| Omg Kitchen & Bath Specialists Inc | B | 1997 | Active |
| One Button Management Corporation | B | 2015 | Active |
| Pacific West Construction Corporation | B | 2007 | Active |
| Predraza General Construction | B | 2026 | Active |
| Preferred Kitchen And Bath Inc | B | 2008 | Active |
| Prohome Remodels | B | 2025 | Active |
| Ricardo Mejia Construction LLC | B + C10 | 2018 | Active |
| Ridgeline Construction Group | B | 2021 | Active |
| Roniaya Construction Inc | B | 2025 | Active |
| RWC Development LLC | B + C15 | 2020 | Active |
| S&L Construction And Landscaping Service Corp | A, B | 2018 | Active |
| Salinas And Paradas Construction | B | 2023 | Active |
| Sanders Construction Services Inc | B | 1995 | Active |
| School Leaders Construction Management LLC | B | 2026 | Active |
| Servpro Of Bellflower | B | 2018 | Active |