| 3 Kings Builders LLC | B | 2002 | Active |
| 707 Ramz Construction Inc | B | 2019 | Active |
| A J F Contracting Inc | B | 2023 | Active |
| A P C Services Of Napa | B | 2007 | Active |
| A T S | A | 1988 | Active |
| Abbey Carpets Unlimited | B + C15, C54 | 1993 | Active |
| Abernethy Brothers Construction Inc | B | 1982 | Active |
| Abernethy Construction Inc | B | 1985 | Active |
| Ac/Dc Electric Inc | B + C10 | 2005 | Active |
| Advanced Construction Services Group LLC | B | 2017 | Active |
| Ag Builders LLC | B | 2025 | Active |
| Alacin Enterprises Inc | B | 2011 | Active |
| Almaraz Construction Inc | B | 2025 | Active |
| Altura Construction Inc | B | 2004 | Active |
| Aman Mark Construction Inc | B | 1995 | Active |
| American Eagle Ent | B + C8, D34 | 1987 | Active |
| Atlas Peak Construction | A | 1997 | Active |
| B H M Construction LLC | A, B | 2007 | Active |
| Balcal Construction Inc | B | 2004 | Active |
| Basil Construction Inc | B | 2023 | Active |
| Bay Village Builders Inc | B | 2000 | Active |
| Bell Construction Inc | B | 2003 | Active |
| Bell Products Inc | A, B + C4, C20, C36 +1 | 1957 | Active |
| Benchmark Civil Construction Inc | A | 2011 | Active |
| Blue Gate Construction Inc | B | 2018 | Renew by Nov 30, 2026 |
| Blue Sky Utility Construction | B + C10 | 2023 | Active |
| Bowman Construction And Development Inc | B | 1998 | Active |
| Bpi Oneroof | A + C10, C39 | 2009 | Active |
| Brady Mitchell Construction Inc | A, B + C10 | 2000 | Active |
| C G G S Backhoe Service Inc | A | 2005 | Active |
| C R Buildworks Inc | B | 2004 | Active |
| C R North Bay Inc | B | 2011 | Active |
| C S Development Inc | B | 2013 | Active |
| C&J Pacific Construction LLC | B + C15 | 2025 | Active |
| Caddell Nova A Joint Venture | A, B + C10 | 2020 | Active |
| Call My Guy Construction Services | B | 2015 | Active |
| Carey Development LLC | B | 2025 | Active |
| Carmichael Construction | B | 2005 | Active |
| Carpet One | B + C54 | 2023 | Active |
| Cello & Maudru Construction Company Inc | B | 1987 | Active |
| Chisto Construction LLC | B | 2022 | Active |
| Contractor Services & Associates | B + C33, C39 | 1985 | Active |
| Cottonwood Homes Inc | B | 1999 | Active |
| Cox Ronald E Designer / Builder Inc | B | 1977 | Active |
| D A P Power Systems Inc | B + C10 | 2015 | Active |
| D E S Builders | A, B + C10 | 2007 | Active |
| Dan Knego Construction Inc | B | 2008 | Renew by Nov 30, 2026 |
| David Foster Inc | B | 2015 | Active |
| Decius Construction Inc | B | 2019 | Active |
| Degarmo's Custom Wood Works Inc | B + C10 | 2000 | Active |
| Dennett Construction Inc | B | 1994 | Active |
| Devine Construction Inc | B | 1997 | Active |
| DN Anderson Construction, Inc. | B | 1997 | Active |
| Dougherty Construction Inc | B | 1991 | Active |
| Duhig Construction Inc | A + HAZ | 2004 | Active |
| E L General Contractor Inc | B | 2021 | Active |
| Ellis Construction Company | B | 1994 | Renew by Dec 31, 2026 |
| Emtu Construction Inc | B | 2018 | Active |
| Figueroa H Construction Inc | B | 2019 | Active |
| Frye Built Construction Inc | B | 2013 | Active |
| G 3 M Inc | B | 2008 | Active |
| G Built Inc | B | 2025 | Active |
| Gagetta Construction Company Inc | B | 2007 | Active |
| Garton Construction Inc | B | 1972 | Active |
| George Joe Construction | B | 2002 | Active |
| Goldstar Construction And Real Estate Services | B | 1986 | Active |
| Grassi & Associates | B | 2005 | Active |
| Great Northern Construction Inc | B | 2000 | Active |
| Grid Design Build | B | 2022 | Active |
| H2 Builders Construction LLC | B | 2026 | Active |
| H2 Builders Inc | B | 2017 | Active |
| Hall Jason Construction Inc | A, B | 2012 | Active |
| Hanes Construction Inc | B | 2002 | Active |
| HCG Associates Inc | B | 1985 | Active |
| Hess R H Development Company | A, B + C8 | 1988 | Active |
| Home Works Home Improvements | B | 2007 | Active |
| Howell Rob Construction Inc | B | 2008 | Active |
| Hydros Agritech Inc | A + C57, D21 | 2024 | Renew by Dec 31, 2026 |
| Insegna Inc | B | 2004 | Active |
| Ironside Construction Inc | B | 2018 | Active |
| Izar Construction Inc | B + C8 | 2014 | Active |
| J G Masonry LLC | B + C29 | 2017 | Active |
| J M C Valley Construction Inc | B | 2015 | Active |
| J R Construction - Sol Solutions Inc | B + C46 | 2010 | Active |
| Janovich Built Inc | B | 2012 | Active |
| JDR Development Company Inc | B | 2023 | Active |
| Johnston General Engineering | A + C27 | 2009 | Active |
| Jr&G Construction LLC | B | 2017 | Active |
| JVG Cooling & Heating Solutions LLC | B + C10, C20 | 2023 | Active |
| K M R Builders Inc | B | 2008 | Active |
| Ka Construction Inc | B | 2025 | Active |
| Kaufman Building & Management Inc | B | 2017 | Active |
| Kelley Construction Inc | B | 1999 | Active |
| Kennedy Construction | B | 2005 | Active |
| Keystone Woodworking | B | 2009 | Active |
| Keystone Yards | B + C27 | 2021 | Active |
| Knight F J Construction Inc | B | 1996 | Active |
| Knittel Construction Inc | B + C36 | 1986 | Active |
| Krueger Bros Builders Inc | B + C33 | 1978 | Active |
| L C Professional Builders Inc | B | 2016 | Active |