| 3e Construction LLC | A | 2024 | Active |
| 3rd Gen Build Co | B | 2026 | Active |
| A C Contractors Inc | B | 2005 | Active |
| Advanced Electrical Systems Inc | B + C10 | 1995 | Active |
| All Wall Systems Inc | B + C9 | 2016 | Active |
| Apex Kitchen Solutions | B | 2023 | Active |
| Arthurbuilt Construction Inc | B + C35 | 1972 | Active |
| Av Dirtworks LLC | A | 2026 | Active |
| Banderas Construction LLC | B | 2025 | Active |
| Barefoot Enterprises Inc | A + C8, C27, C53 | 1989 | Active |
| Bayline Builders | B | 2002 | Active |
| Black Dog Construction & Installation Inc | B | 2014 | Active |
| Blitzkrieg Construction | B | 2026 | Active |
| Bohner Construction Inc | B | 2010 | Active |
| Boneso & Harms LLC | A, B | 2023 | Active |
| Boneso Brothers Construction Inc | A, B + C4, C36 | 1999 | Active |
| Brayton Power Services LLC | A | 2025 | Active |
| Breese Welding | B + C60 | 2024 | Active |
| Brooks Construction Incorporated | B | 2017 | Active |
| Brown Andrew Ag Services | A | 2013 | Active |
| Brown Andrew General Engineering Inc | A, B + ASB, HAZ | 2005 | Active |
| C Healy Construction LLC | B | 2004 | Active |
| C Hollister General Engineering Inc | A | 2021 | Active |
| Cadwell & Co | B | 2016 | Active |
| Cal Paso Solar Electric | B + C10 | 2009 | Active |
| Cal Star Improvements LLC | B | 2022 | Active |
| Caliber Concrete & Construction Inc | B + C8 | 2006 | Active |
| Case Pacific Company | A + C57 | 1969 | Active |
| Castle Construction LLC | B + C12 | 2016 | Active |
| Central Coast Barns & Buildings Inc | B | 2004 | Active |
| Central Pacific Construction LLC | B | 2024 | Active |
| Coffelt Construction & Transport Inc | A, B + C47 | 1991 | Active |
| Collins Enterprises Inc | B | 1985 | Active |
| Collins Rodney Construction | B | 2003 | Active |
| Columbia Builders Of California Inc | B | 2017 | Active |
| Cravens Construction Company | B + C47 | 2013 | Active |
| D C Construction & Manufactured Housing Inc | B + C47 | 2007 | Active |
| Darins Patio Covers & Awnings | B + C33, D03, D34 | 2004 | Active |
| Davner Construction & Engineering Services Inc | A | 2019 | Active |
| Eras Construction Inc | B | 1985 | Active |
| Estrella Associates Inc | A, B | 2005 | Active |
| Ferravanti Grading & Paving | A | 2004 | Active |
| Garrett Thiessen Construction Inc | B + C8 | 2003 | Active |
| Gierlich-Mitchell Inc | A | 1981 | Active |
| Gouin Construction & Development Inc | B | 2006 | Active |
| Hamon Overhead Door Company Inc | B + D28 | 1980 | Active |
| Hank's Welding Service | A + C38, C51, C57 | 2004 | Active |
| Harrod Home Construction Inc | B + C27 | 2013 | Active |
| Harrod Homes Inc | B | 2019 | Active |
| Hernandez A H Construction | B | 2003 | Active |
| High End Construction Inc | B | 2003 | Active |
| High Voltage Energy Inc | A + C12 | 2024 | Active |
| Hollister General Engineering Inc | A | 2006 | Active |
| Howell J M Inc | B | 2003 | Active |
| Husky Builders Inc | B | 2023 | Active |
| Hutchins Enterprises | A + C7 | 2017 | Active |
| Hutchinson Construction Inc | B | 2012 | Active |
| Idler's Home | B | 2008 | Active |
| Impeccable Construction JM Group | B | 2026 | Active |
| Innovative Coatings Central Coast Inc | A + C8, C27, C53 | 2021 | Active |
| Itd Construction Inc | A, B | 2006 | Active |
| J 2 Construction Company | A, B | 2014 | Active |
| Jackson & Co | B | 1990 | Active |
| Jimenez Construction & Design LLC | B | 2025 | Active |
| JM Construction | A, B | 2023 | Active |
| JWC & Welding Inc | B + C60 | 1986 | Renew by Nov 30, 2026 |
| Kies & Son | A | 2017 | Active |
| Koerber R F Inc | B + C2, C9 | 2005 | Active |
| KRF Construction Inc | B | 1988 | Active |
| Kritz Excavating And Trucking Inc | A + C12 | 1991 | Active |
| Kudla Enterprises Inc | B | 1985 | Active |
| KW Construction | A, B | 2009 | Active |
| L T Directional Boring | A | 2011 | Active |
| Lacy D C Excavating Inc | A, B | 2001 | Active |
| Legacy Builders & Design Inc | B | 2018 | Active |
| Limb Inc | B | 1972 | Active |
| Loma Development Group | B | 1991 | Active |
| M T M Construction | A, B | 1989 | Active |
| Marshall Jim Construction Inc | A, B | 1988 | Active |
| Mge Underground | A, B + ASB, C10, HAZ | 1999 | Active |
| Mitchell Mike Construction Inc | B | 1982 | Active |
| Molnar M J Trucking & Construction Inc | A, B | 2005 | Active |
| Mr Tom's Tile Corp | B + C54 | 2013 | Active |
| Muniz Excavating Inc | A + C42 | 2010 | Active |
| New View Development Inc | B | 1977 | Active |
| Nunno Corporation LTD | B + C51 | 1984 | Active |
| On Point Plumbing Heating & Air Conditioning Inc | B + C20, C36 | 2022 | Active |
| Pacific Management & Development Inc | A, B | 1988 | Active |
| Pahler James Construction Inc | B | 2005 | Active |
| Palomar Homes | B | 1980 | Active |
| Peel Aaron Construction Inc | A, B + C12 | 2005 | Active |
| Plemons Ted Construction Co Inc | A, B | 1998 | Renew by Oct 31, 2026 |
| Potter R J Construction Inc | B | 2001 | Active |
| R B Construction | B + C4, C36 | 1999 | Active |
| R Skelton Construction Inc | B | 2016 | Active |
| R W Construction | B + C10 | 2003 | Active |
| RCH Contractors Inc | A, B | 2025 | Active |
| Red Rhino Construction | B | 2008 | Renew by Oct 31, 2026 |
| Renewable Fuels Inc | A | 2015 | Active |
| Reynoso Framing LLC | B + C5 | 2024 | Active |