| J & A Roofing LLC | RGC | 2019 | Active |
| J & B General Construction LLC | RGC | 2025 | Active |
| J & I Builders LLC | RGC | 2023 | Active |
| J & J Floor Covering & Interiors LLC | RGC | 2009 | Active |
| J & L Probuild LLC | RGC | 2022 | Active |
| J & R General Contracting LLC | RGC | 2023 | Active |
| J & R LLC | RGC | 2023 | Active |
| J A Holland Construction LLC | RGC | 2021 | Active |
| J B J Construction LLC | RGC | 2018 | Renew by Nov 19, 2026 |
| J L Painting LLC | RGC | 2024 | Active |
| J Philipps & Associates LLC | RGC | 2001 | Active |
| J Walker Construction LLC | RGC | 2026 | Active |
| Jack Of All Trades The Helping Handyman LLC | RGC | 2025 | Active |
| Jacksons Helping Hand LLC | RGC | 2025 | Active |
| Jacob Coleman Construction LLC | CGC2, RGC | 2016 | Active |
| Jad Remodeling & Construction Inc | RGC | 2016 | Active |
| Jason Booth Construction LLC | RGC | 2023 | Active |
| Jay LLC | RGC | 2025 | Active |
| Jay Peetz Machine Inc | CGC2, RGC | 1996 | Active |
| JB & RV Construction LLC | RGC | 2022 | Active |
| JBC General Contracting LLC | RGC | 2020 | Active |
| JBS Construction Corp | RGC | 2022 | Active |
| JC Construction LLC | RGC | 2019 | Active |
| JC General Construction Inc | RGC | 1999 | Active |
| JC Pro Builders Construction LLC | CGC2, RGC | 2018 | Active |
| JC Remodel And Construction LLC | RGC | 2017 | Active |
| JC Roofing LLC | RGC | 2021 | Active |
| JCF Drywall LLC | RGC | 2024 | Active |
| JCJ Todo Construction LLC | RGC | 2023 | Active |
| JCR Construction LLC | CGC2, RGC | 2014 | Active |
| JD & Y Painting And Contracting LLC | RGC | 2019 | Active |
| JD Construction & Remodeling LLC | RGC | 2018 | Active |
| JDM Home Solutions LLC | RGC | 2026 | Active |
| Jed Construction & Remodeling LLC | RGC | 2022 | Active |
| Jencourt Environmental Services LLC | CGC1, RGC | 2008 | Active |
| Jenga Construction LLC | RGC | 2021 | Active |
| Jeremy A Dumanovsky Construction Inc | RGC | 2018 | Active |
| Jess Drywall LLC | RGC | 2023 | Active |
| Jet Communications LLC | CGC1, RGC | 2016 | Active |
| Jet Utilities LLC | CGC1, RGC | 2016 | Active |
| JG Fields Solutions LLC | RGC | 2020 | Active |
| JG NW LLC | RGC | 2023 | Active |
| JGCM Inc | CGC2, RGC | 1992 | Active |
| Jhernandez Construction LLC | RGC | 2018 | Active |
| Jimna Build Construction LLC | RGC | 2026 | Active |
| JJ Vandehey Construction LLC | RGC | 2025 | Active |
| Jju Maintenance LLC | RGC | 2024 | Renew by Nov 20, 2026 |
| JK Carpet Center Inc | RGC | 1983 | Active |
| JL Homes NW LLC | RGC | 2022 | Renew by Nov 25, 2026 |
| JL Martinez Concrete LLC | RGC | 2023 | Active |
| Jl&S Residential LLC | RGC | 2023 | Active |
| JLSL Drywall LLC | RGC | 2020 | Active |
| JM Smith Gutters And More LLC | CGC2, RGC | 2019 | Active |
| JM Technologies LLC | RGC | 2017 | Active |
| JMC Hardscaping & Construction LLC | RGC | 2026 | Active |
| JMCJ Construction LLC | RGC | 2022 | Active |
| JMM Construction LLC | RGC | 2026 | Active |
| JMS Construction LLC | CGC2, RGC | 2016 | Active |
| JNK Construction LLC | CGC2, RGC | 2024 | Active |
| Joe A Prystup Construction Inc | RGC | 2019 | Active |
| Joes Painting And Remodeling LLC | RGC | 2020 | Active |
| Joes Safe Lock LLC | RGC | 2016 | Renew by Nov 29, 2026 |
| John Doyle Painting LLC | RGC | 2019 | Active |
| John Gross Interior Design Inc | RGC | 1998 | Active |
| John Hammer Construction Inc | RGC | 2015 | Active |
| Johns Woodworks LLC | RGC | 2011 | Active |
| Johnson Roof Coatings LLC | CGC2 | 2018 | Active |
| Jones General Contracting LLC | RGC | 2023 | Active |
| Jordan Services Inc | RGC | 1992 | Active |
| JP Construction LLC | RGC | 1997 | Active |
| JP Harvest Construction Inc | CGC2, RGC | 2016 | Active |
| Jr Honest Construction LLC | RGC | 2020 | Renew by Dec 1, 2026 |
| Jr Pacific Construction LLC | RGC | 2021 | Active |
| JS Construction LLC | RGC | 2023 | Active |
| JS Improvements LLC | RGC | 2026 | Active |
| JS Pro Construction & Remodeling LLC | RGC | 2022 | Active |
| JS Vasquez Marble And Granite LLC | RGC | 2020 | Active |
| JT Construction & Painting LLC | RGC | 2024 | Renew by Dec 19, 2026 |
| Judsons Inc | CGC2, RGC | 1980 | Active |
| Just Bucket Excavating Inc | CGC1, RGC | 2000 | Active |
| JVC Construction LLC | RGC | 2022 | Active |
| K & E Excavating Inc | CGC2, RGC | 1998 | Active |
| K & E Paving Inc | CGC2, RGC | 2018 | Active |
| K & K Home Construction LLC | RGC | 2024 | Active |
| Kasha Construction LLC | RGC | 2023 | Active |
| Kathleen Dewoina Inc | RGC | 2022 | Active |
| Kaufman Commercial LLC | CGC1 | 2019 | Active |
| Kaufman Homes Inc | RGC | 2010 | Active |
| Kaufman Specialties LLC | RGC | 2021 | Active |
| Kaufmans Home Maintenance LLC | RGC | 2020 | Active |
| KBW Home Improvement LLC | RGC | 2018 | Renew by Dec 4, 2026 |
| KCH Enterprises LLC | CGC2, RGC | 2006 | Active |
| KD Electric LLC | CGC2, RGC | 2016 | Active |
| KDK Construction LLC | RGC | 2007 | Active |
| Keenes Custom Carpentry LLC | RGC | 2021 | Active |
| Kelly & Sons Construction Inc | RGC | 2002 | Active |
| Ken Tooze Excavation Inc | RGC | 2005 | Active |
| Kep Construction Co | RGC | 2004 | Active |
| Key Home Improvements LLC | RGC | 2019 | Active |
| Keystone Granite Inc | RGC | 2006 | Active |