| A+ Home Improvement Inc | B | 2021 | Active |
| Abny General Engineering Inc | A, B | 2012 | Renew by Dec 31, 2026 |
| Ace CD Inc | A, B + C27, D34 | 2004 | Active |
| Ae Technic Inc | A, B + C10, C20, C46 | 2007 | Active |
| Alcan Technologies Incorporated | B | 2012 | Active |
| Allied Paving Enterprises Inc | A | 1993 | Active |
| Aloha Pools | B + C53 | 1990 | Active |
| Argo Contractor Services Inc | B + C10, C20, C38 | 1991 | Active |
| Arj Development Inc | B | 2026 | Active |
| Ark One Construction Inc | B | 2014 | Active |
| Avica Construction & Development Inc | B | 2022 | Active |
| B R Building Resources Company | B + C10, C15, D63 | 2010 | Active |
| Barnett MW Remodeling Corp | B | 2021 | Active |
| Be Com Incorporated | A + C10 | 2025 | Active |
| Birch Construction Inc | B | 2024 | Active |
| Bohler Builders Group Inc | B | 2011 | Active |
| BR Energy Inc | B + C10 | 2017 | Active |
| Brennan Electrical Inc | A + C10 | 2008 | Active |
| Bresee Contracting & Construction Inc | B | 2023 | Active |
| Bruno Made Construction | B | 2022 | Active |
| BT Construction | B + D38, D63 | 2021 | Active |
| C R Interiors | B | 2019 | Active |
| Cade Homes Inc | B | 2025 | Active |
| California Commercial Pools Inc | B + C53 | 1981 | Active |
| City Bore Communication Inc | A + D09 | 2018 | Active |
| Commercial Construction Inc | B | 1989 | Active |
| Courts Construction Company Inc | B | 2003 | Active |
| Crestwood Corporation | B | 1984 | Active |
| Development 1 Group Incorporated | B | 2017 | Active |
| Dollhouse Construction Inc | B | 2018 | Active |
| Easy Builders Construction Corporation | B | 2022 | Active |
| Edra Construction Corporation | B | 2015 | Active |
| Elliott Curtis R Construction | B | 1987 | Active |
| Equity Saver Construction Inc | B | 2009 | Active |
| Excel Electrical Contractors Inc | B + C10 | 2000 | Active |
| Foothill Construction Co | B | 2005 | Active |
| Foothill Renovators | B | 2019 | Active |
| G A Technical Services Inc | B + C7, C10 | 2002 | Renew by Dec 31, 2026 |
| G C D Inc | A, B | 1990 | Renew by Nov 30, 2026 |
| Gardenball General Construction Company | B + C36, C39 | 2018 | Active |
| Garza Construction Inc | B + C8, C10, C33 | 2009 | Active |
| Going Grass Free | B + C27, C29 | 1992 | Active |
| Gorilla Construction Inc | B | 2008 | Active |
| Goss J D Construction Company Inc | B + C8 | 1986 | Active |
| Granvista Construction Corporation | B | 2002 | Active |
| Green Home Solutions Of San Gabriel Valley | B | 2026 | Active |
| GSS Clean-Up & Restoration Inc | B + D63 | 2017 | Active |
| H J Vast | B + C10, C15, C33 | 2007 | Active |
| H M F Construction Inc | B | 2020 | Active |
| Hansen Cold Storage Construction LLC | B | 2024 | Active |
| Harik Construction Inc | B | 1990 | Active |
| Heritage General Contracting Inc | A | 2019 | Active |
| Hi - Quality Drywall | B + C9 | 2017 | Active |
| Homage Development Group LLC | B | 2023 | Active |
| Integrated Construction And Development Inc | B | 2020 | Active |
| J G Plumbing & Rooter Inc | A, B + C36 | 2022 | Active |
| JDF Partners Inc | A, B | 2013 | Active |
| Jem Consulting Inc | B | 2007 | Active |
| JG Construction & Engineering Inc | A, B | 2020 | Active |
| Jimenez Empire Construction | B | 2024 | Active |
| Joebuilt Construction | B | 2026 | Active |
| Jordanair Inc | B + C10, C20, C36 | 1989 | Active |
| K B Engineering Inc | A + C36 | 2003 | Active |
| Karam Construction Inc | A, B | 2021 | Active |
| Kodiak Konstruction Inc | B | 2005 | Active |
| L B I Boyd | B + D34 | 1999 | Active |
| L B K Construction | B + D28 | 2007 | Active |
| Laing Fine Homes Inc | B | 2019 | Active |
| Lally Building Resources Company | B + C10 | 2023 | Active |
| Leyva's Construction Corp | B | 2021 | Active |
| Lopez Engineering | A | 1975 | Active |
| M H General Engineering Inc | A | 2011 | Active |
| M L T C Incorporated | B + C6 | 1997 | Active |
| Ma Home Construction Inc | B | 2021 | Active |
| Macias Building & Development Inc | B | 2010 | Active |
| Madrone Construction LLC | B | 1980 | Active |
| Mancino Door & Window Inc | B + C6 | 2017 | Active |
| Mariba Construction Inc | B + C7, C10, C17 +1 | 2020 | Active |
| Morpro Construction | B + C36 | 2022 | Active |
| N C M Construction Solutions | A, B | 2019 | Active |
| New Keith A Construction Inc | B | 1987 | Active |
| Ordaz's General Construction Inc | B | 2017 | Active |
| P And P General Construction Inc | B | 2026 | Active |
| Pabon Construction Company | B | 1986 | Active |
| Pacific West Space Communications Inc | A + C7, C10 | 1990 | Active |
| Performance Construction Inc | B | 1996 | Active |
| Peterson Rick General Contractor Inc | B | 1988 | Active |
| Picture Perfect Construction Inc | A, B + C27, C53 | 2005 | Active |
| Positive Energy | B + C6, C10 | 1996 | Renew by Nov 30, 2026 |
| Positive Plumbing Inc | B + C16, C36 | 1988 | Active |
| Rain Gutter Builderz | B | 2026 | Active |
| Rolhard Inc | A + D12 | 2016 | Active |
| Rra Builders | B | 2018 | Active |
| SC Sax Companies Inc | B + C53 | 2005 | Active |
| Servpro Of Glendora / San Dimas | B | 2010 | Active |
| Silva Backhoe Services Inc | A | 2009 | Active |
| Skyblue Construction Inc | B | 2011 | Active |
| Slayton Michael General Contracting Inc | B | 2011 | Active |
| Sloancorp Construction Inc | A, B | 2022 | Active |
| Starkey Construction Inc | B | 2020 | Active |