| Onsite Construction Services Inc | B + C10 | 1981 | Active |
| Osburn Construction Inc | B | 2016 | Renew by Nov 30, 2026 |
| Pacific Building Contractors Inc | B | 2006 | Active |
| Pacific Control Service Inc | B + C20, C38 | 2000 | Active |
| Patriot Heating Air Plumbing | B + C10, C20, C36 | 2020 | Active |
| Perea Construction Services Inc | B | 2012 | Renew by Dec 31, 2026 |
| Perez Solar Panels Inc | B + C10 | 2022 | Active |
| Perfect Adu & Remodeling Inc | B | 2024 | Active |
| Perfect Roofing Inc | B + C39 | 2023 | Active |
| Perfection Pro Contractors | B + C15, C33 | 2022 | Active |
| Performance Air Conditioning | B + C39 | 2019 | Active |
| Pizol Home Improvement | B | 2024 | Active |
| Precision Development Group Inc | B | 2019 | Active |
| Precision Hotel Interiors Inc | B | 1997 | Active |
| Premium Legacy Remodeling & Construction | B + C39 | 2022 | Renew by Dec 31, 2026 |
| Prime Painting And Restoration | B2 + C33 | 2019 | Active |
| R C Becker Inc | A | 1969 | Active |
| Radfall DCM | A, B | 2024 | Active |
| Rainbow International Of Santa Clarita | B | 2015 | Active |
| Rava Inc | B | 2021 | Active |
| Rba Construction Inc | B | 2023 | Active |
| Resolution Design Inc | B | 2007 | Active |
| Revel Construction Company | B | 2017 | Active |
| Rocky's Termite & Pest Control Inc | B | 2012 | Active |
| Roofing Experts | B | 2014 | Active |
| Royalty Enterprise Construction Inc | B | 2018 | Renew by Dec 31, 2026 |
| RP Build Corp Corporation | B | 2009 | Renew by Nov 30, 2026 |
| S & T Contractors Service Inc | B | 2010 | Active |
| S O S Repair & Construction | B + C36 | 1999 | Active |
| Salazar Construction Co Inc | B + C8 | 1986 | Active |
| Sandco Plumbing Inc | A, B + C36 | 2022 | Active |
| Santa Clarita Concrete | A, B + C8 | 1979 | Active |
| Saucillo Construction Inc | B | 2026 | Active |
| SCC Concrete Inc | B + C8 | 2011 | Active |
| Select Painting | B + C23, C33 | 1991 | Active |
| Selectone Kitchen & Bath | B | 2022 | Renew by Dec 31, 2026 |
| Servpro Of Eagle Rock - South Glendale | B | 2014 | Renew by Dec 31, 2026 |
| Servpro Of Santa Clarita Valley | B | 2005 | Active |
| Silver Edge Home Improvements Inc | B | 2026 | Active |
| Southern California Decking Inc | B + C33 | 2011 | Active |
| Specialty One Contractors Inc | B + C33 | 1989 | Active |
| Square One Construction Inc | B + C21 | 2019 | Active |
| Symmetry Developments | B | 2025 | Active |
| T M C Construction Services Inc | B + C33 | 2018 | Active |
| Telpower Construction | B + C7 | 1994 | Active |
| Temecula Resort Development LLC | B | 2026 | Active |
| The HVAC Store Showroom | B + C20 | 2020 | Active |
| Thousand Oaks Plumbing | A, B + ASB, C36 | 2021 | Active |
| Top Quality General Construction Inc | B + C15 | 2013 | Active |
| Topwest Home Improvement Inc | B | 2026 | Active |
| Total Restoration Services Inc | B | 2014 | Active |
| Trans-Pacific Engineering Co Inc | A, B | 1996 | Active |
| Transcend Construction & Design Inc | B | 2025 | Active |
| Upscale Construction & Restoration Inc | B | 2021 | Active |
| Valley Remodel & Construction Inc | B2 + C27 | 2022 | Active |
| West Coast Master Builders Inc | A, B + C10, C20, D12 | 2015 | Active |
| Williams Homes Inc | B | 1997 | Active |
| Williams Rebuild | B | 2026 | Active |
| Wilson E Company | B | 2024 | Active |
| Winter Randal G Construction Inc | B + ASB, C8, C9 +5 | 1980 | Active |
| Yaqui Construction Group Inc | B | 2024 | Active |