| Infiniti Construction Inc A | B | 2011 | Active |
| Inflexion Builds LLC | B | 2024 | Active |
| Inform Construction Inc | B | 2024 | Active |
| Ing Construction & Development Inc | A, B | 2025 | Active |
| Ingenious Construction Inc | B + C10, C39 | 2015 | Renew by Nov 30, 2026 |
| Inhance Construction Inc | B | 2021 | Active |
| Inner Space Design & Development Inc | B + C10, C33 | 2005 | Active |
| Innovative Renovations Inc | B | 1988 | Active |
| Inspire Development | B | 2018 | Active |
| Integrity Construction | B | 2017 | Active |
| Integrity Management | B | 2010 | Active |
| Intension Design | B | 2011 | Active |
| Interconneckt Corp | B + C33 | 2023 | Active |
| Interior And Exterior Builders | B | 2025 | Active |
| International Developers And Engineering Group | B + C10, C20 | 2012 | Active |
| International Modern Construction | B | 1993 | Active |
| Interserve Construction Corp | B | 2012 | Active |
| Inti Inc DBA Inti Construction | B | 2021 | Active |
| Intrepid Builders Inc | B | 2020 | Active |
| Iraheta Prime Pro Construction Inc | B | 2026 | Active |
| Isaac' Building & Remodeling Inc | B | 2019 | Active |
| Isbell Built Ca LLC | B | 2018 | Active |
| Island Pools & Waterscapes | B + C53 | 1990 | Active |
| It Construction & Remodeling Inc | B + D28 | 2024 | Active |
| Italian Painting Services | B + C33 | 2019 | Active |
| Ivanjames Development Inc | B | 2013 | Active |
| Izurieta Fence Company Inc | A, B + C13, C23 | 2008 | Renew by Dec 31, 2026 |
| J & A Pro Builders Inc | B | 2025 | Active |
| J & E Universal Construction Inc | A, B | 2024 | Active |
| J & I Buildex Inc | B | 2021 | Active |
| J & J Construction | B | 2004 | Active |
| J & J General Builders | B | 2024 | Active |
| J & L Builders Group | B | 2024 | Active |
| J & L Construction | B | 2021 | Active |
| J & S Construction Services Inc | B | 2013 | Active |
| J & S Custom Hardwood Floors Inc | B + C15 | 1998 | Active |
| J A G Construction Company Inc | B | 2002 | Active |
| J B 4 Construction | B | 2002 | Active |
| J D Group Construction Company Inc | B | 2001 | Active |
| J D Group Inc | B | 1993 | Active |
| J E A Inc | A | 1989 | Active |
| J F L Electric Inc | A, B + C10, C31, C36 | 1989 | Active |
| J GD Construction & Remodeling Inc | B | 2024 | Active |
| J Gomez Inc | B | 2026 | Active |
| J Handy Construction | B | 1997 | Active |
| J I L Construction Services Inc | B | 2009 | Active |
| J L Innovation General Construction Inc | B | 2018 | Active |
| J M Building & Construction Inc | B | 2017 | Active |
| J M Engineering And Development Corp | A, B + C21 | 2012 | Renew by Nov 30, 2026 |
| J M H Construction Inc | B | 2005 | Active |
| J M L Construction And Demolition | B | 2023 | Active |
| J N A Builders Inc | A, B + C8, C51 | 2010 | Active |
| J N C P General Construction Inc | B | 2026 | Active |
| J P Demo Inc | B + C21 | 2015 | Active |
| J R Universal Construction Inc | B + C9 | 2004 | Active |
| J S Contractors Inc | B | 2018 | Active |
| J S P Builders Inc | B + C10 | 2017 | Active |
| J S R Construction Group Inc | B | 2023 | Active |
| J T's Construction Services | B | 2018 | Active |
| J V General Construction Inc | B | 2008 | Active |
| J Y Corporation | B | 2019 | Active |
| J&A Innovation General Construction | B | 2024 | Active |
| J&C Retrofit Construction Inc | B | 2018 | Active |
| J&J Renovations Inc | B | 2020 | Active |
| J-C&B Home Repairs & Remodels | B | 2023 | Active |
| J2yk Construction Inc | B | 2024 | Active |
| Jaam Construction Inc | B | 2022 | Active |
| Jabersconsulting LLC | B | 2026 | Active |
| Jackson & Jackson Construction Inc | B | 2007 | Active |
| Jacobo's Construction Inc | B | 2025 | Active |
| Jal Construction Inc | B | 2013 | Active |
| Jalco General Construction Inc | A, B | 2019 | Active |
| JBC Construction Inc | A | 2026 | Active |
| Jbhand Pro General Construction | B | 2026 | Active |
| Jburton Inc | B | 2013 | Active |
| JC Construction And Welding LLC | B + C60 | 2020 | Active |
| JC Construction Enterprises Corp | B | 2023 | Active |
| JC Construction Inc | B | 2024 | Renew by Dec 31, 2026 |
| JC Top Inc | B + C10 | 2025 | Active |
| JCG Decks Construction Corp | B | 2026 | Active |
| Jcm's Construction Services Corp | B | 2023 | Active |
| JCS General Construction Inc | B | 2018 | Active |
| JDM Contractors | B | 2014 | Active |
| JDM Sliding Door & Window Repair | B | 2021 | Active |
| Jeffries Global Inc | B | 2021 | Active |
| Jenkins Gales & Martinez Inc | B | 2009 | Active |
| Jensen Landscape & Construction Company LLC | B + C27 | 2006 | Active |
| Jensen Landscape Contractor LLC | A, B + C27 | 1969 | Active |
| Jerome's Ocl Home Improvement | B | 2023 | Active |
| Jerseyboy Construction | B | 2016 | Active |
| JF Designs Inc | B + C6 | 2010 | Active |
| JG Building Company Inc | B | 2019 | Active |
| Jink Plumbing Inc | B + C36 | 2021 | Active |
| Jireh Prime Electric | B + C10, C36 | 2025 | Active |
| JJ Milian Building Inc | B | 2024 | Active |
| Jje Builder Inc | B | 2011 | Active |
| JJJ Development Inc | B | 2022 | Active |
| JJK Builders Inc | B | 2022 | Active |
| JM Builders & Design Inc | B | 2023 | Active |
| JMJ General Contractor LLC | B + C10 | 2019 | Active |