| Abstract Works Inc | B | 2020 | Active |
| Affordable Earthworks Inc | A + C27 | 2009 | Active |
| Agn Construction Inc | B | 2025 | Active |
| Aguirre Mechanical Services LLC | B + C20 | 2024 | Active |
| Anton's Service Inc | A, B + C12, C21, D34 +1 | 2005 | Active |
| Arce | B + C10 | 2005 | Active |
| Augustyn Thomas W Inc | A, B | 2010 | Active |
| Avitia Brothers Construction Inc | B | 2026 | Active |
| BDP Services Inc | A + C36 | 2020 | Active |
| Bennett Construction Services Inc | B | 2006 | Renew by Oct 31, 2026 |
| Better Life Construction Inc | B | 2009 | Active |
| BGS Inc | A | 2007 | Active |
| Big Ideas Construction Inc | B | 2004 | Active |
| Bolt USA Inc | B | 2022 | Active |
| Brady-Standard | B + C2, C9, C33 +1 | 2019 | Active |
| Brewer Crane & Rigging | A | 2017 | Active |
| Burner Sheet Metal LLC | B + C13, C43 | 2013 | Active |
| C E Crist Inc | A, B + C12 | 1988 | Active |
| C M T Alpine Electric Inc | B + C10 | 1998 | Active |
| C R M Construction Co | A, B + C9, C35 | 1997 | Active |
| C3 Sewer & Drains | A + C36 | 2025 | Active |
| Cal West General Engineering Inc | A | 2001 | Active |
| Carnik Residential Design | B | 2011 | Active |
| Casias Construction Inc | B | 2003 | Active |
| Christian Brothers Emergency Building Services | B | 2011 | Active |
| Cifuentes Trucking Inc | B + D34 | 2012 | Active |
| Clauss Construction | A, B + C21, C22, HAZ | 1991 | Active |
| Coastal Pacific Enterprises | B + C15, C21, C54 | 2010 | Active |
| Countrywide Cabinetry Inc | B | 2007 | Active |
| Crawford Contr | B + C47, D03 | 1983 | Active |
| Daley Corporation | A | 1929 | Active |
| Deep Blue Construction Inc | B | 2018 | Active |
| Domus Prime Remodeling Inc | B | 2026 | Active |
| E C Constructors Inc | A, B + C8 | 1990 | Active |
| E Welch Construction Inc | B + C36 | 1976 | Active |
| Ecc-Tbp A Joint Venture | A, B + C8 | 2020 | Active |
| El Cajon Grading & Engineering Co Inc | A | 1972 | Active |
| Enniss Inc | A, B + C21, C51 | 2002 | Active |
| Evolve Construction Inc | B | 2005 | Active |
| Excel Lid | A | 2024 | Active |
| Frattura General Contracting Inc | B + C15 | 2004 | Active |
| Frontline Facility Solutions LLC | B | 2026 | Active |
| FSG General Engineering Inc | A | 1998 | Active |
| Furley's Excavation Inc | A + C12 | 2018 | Active |
| G Neffa Drywall Inc | B + C9, D34 | 1990 | Active |
| Galvan General Building Inc | B | 2023 | Active |
| Gaskill Construction Inc | B | 2011 | Active |
| Gem Industrial Electric Inc | A, B + C10, C13, C27 | 1965 | Active |
| Geo Pacific Services Inc | A | 2011 | Active |
| Global Power Group Inc | A, B + C10 | 2006 | Active |
| Green Choice Constructors Inc | B + C10 | 2010 | Active |
| H&H Construction And Development LLC | B | 2022 | Active |
| Hazard CM Engr LLC | A + C31 | 2018 | Active |
| Hazard Construction | A + C31 | 1998 | Active |
| Hazard Construction Engr LLC | A + C31 | 2018 | Active |
| Hazard-Tc JV | A + C31 | 2026 | Active |
| Hobbs E L Inc | B + C2, C9, C35 | 2000 | Active |
| Homeland Engineering Inc | A | 2014 | Active |
| Hospitality Construction Inc | B | 2019 | Active |
| Hyatt Doug Construction LLC | B | 1989 | Active |
| J & R Quality Builders Inc | B + C5 | 2016 | Active |
| J & S Asphalt Inc | A + C12 | 2021 | Active |
| J Build Inc | B | 2017 | Active |
| J M A Drywall Construction Inc | B + C9 | 2022 | Active |
| JCD Construction Inc | B | 2023 | Active |
| Jesser And Daughter Inc | B | 2012 | Active |
| JK Drywall | B + C9 | 2019 | Active |
| Johnson Finch & McClure Construction Inc | B + C2, C9, C28 +3 | 1980 | Active |
| Jordan Mobile Home Service Inc | B | 1984 | Active |
| K R Wolfe Inc | B + C10 | 2010 | Active |
| K W 3 Construction Inc | B + C27 | 2019 | Active |
| Kainbrook Engineering Inc | A | 2024 | Active |
| KCS Restorations Inc | B + C33 | 2022 | Active |
| Kirk Paving Inc | A + C12 | 1998 | Active |
| Koch General Engineering Inc | A | 2017 | Active |
| L R S Homes Inc | B | 1998 | Active |
| Layfield USA Corporation | A + D12 | 2004 | Active |
| Lazer West Engineering Inc | A | 2017 | Active |
| Luna Builders LLC | B | 2025 | Active |
| M & M Construction | B | 1997 | Active |
| M 2 Construction Inc | A, B + C21 | 2011 | Active |
| Magnify Construction | B | 2025 | Active |
| Marathon Construction Corporation | A, B | 1981 | Active |
| Marco Crane & Rigging Co | A | 1991 | Active |
| Marrokal Construction Company | B | 1990 | Active |
| Marrokal Design & Remodeling LLC | B | 2016 | Active |
| Mummert Construction Inc | B | 2019 | Active |
| Murillo Engineering | A | 2022 | Active |
| New Century Construction Inc | A, B + ASB, HAZ | 1991 | Active |
| Next Level General Home Development | B | 2025 | Active |
| Ortega A M Construction Inc | A + C10 | 1986 | Active |
| Osborne General Contracting | B | 2019 | Active |
| Parra Building Consultants Inc | B + C2, C39 | 2018 | Active |
| Patriot General Engineering Inc | A + C10 | 2008 | Active |
| Precision Electric Co | A, B + C7, C10, C46 | 1988 | Active |
| Precision Electric Solar | A, B + C7, C10, C46 | 2010 | Active |
| Pro Built Construction Services Inc | B | 2010 | Active |
| Property Repair Solutions | B | 1989 | Active |
| Rabc - Ecc A Joint Venture | A, B | 2013 | Active |
| Rad Builders Inc | B | 2025 | Active |