| E Ramos Construction Inc | B + ASB | 2022 | Active |
| East Bay Consulting Inc | B | 2001 | Active |
| Efficient Pros LLC | B | 2026 | Active |
| Electrical Service Solutions Inc | A + C10, D21, D28 | 2008 | Active |
| Electrical Systems Testing LLC | A + C10 | 2016 | Active |
| Electricians Service Express Inc | B + C10 | 2019 | Active |
| Electro Systems Electric Inc | B + C10 | 1987 | Active |
| Elite Cabinets Inc | B | 2021 | Active |
| Empire Plumbing Heating & Air Conditioning | B + C10, C20, C36 +1 | 2001 | Active |
| Engineering And Environmental Construction Inc | A, B + C10, C36, HAZ | 2006 | Active |
| Envirosafe Restoration Corp | B | 2019 | Active |
| Eps Builders | B | 2022 | Active |
| Equaphase Technologies Inc | B | 2026 | Active |
| F Roberts Construction | B + ASB, C21, C22 +1 | 2014 | Active |
| Fiege Construction Inc | B | 1978 | Renew by Nov 30, 2026 |
| Fieldtek Electric LLC | A + C10 | 2018 | Active |
| Figlewicz Construction | B | 2015 | Active |
| Folger Heating & Air Inc | B + C20 | 1999 | Active |
| Framing Consl | B | 2024 | Active |
| Franklin Construction | B | 1991 | Active |
| Frost B R Company | A, B | 2004 | Active |
| Full House Construction Inc | B | 2016 | Active |
| Future Construction & Design Inc | B | 2024 | Active |
| G & M Oil Company Inc | B + C10, C36, D40 | 2006 | Active |
| G B C Construction Inc | B | 2003 | Active |
| G C Services | B | 2024 | Renew by Nov 30, 2026 |
| G E O Building Services Inc | B | 2010 | Active |
| Geers Plumbing Inc | B + C20, C36 | 1995 | Active |
| Geil Industries | B | 1995 | Active |
| Gergen J P Company Inc | B | 1983 | Active |
| Gettler Construction Inc | B | 2017 | Active |
| Giland Inc | B + C10, C54 | 2011 | Active |
| Go Tile & Stone Inc | B + C54 | 2015 | Active |
| Golden Construction Inc | B | 2007 | Active |
| Golden Edge Construction Inc | B | 2001 | Active |
| Golden Oaks Kitchen Bath And Flooring Inc | B + C15, C54 | 2004 | Active |
| Golden State Constructors | A, B + C10 | 2005 | Active |
| Gomez Builders & Contractors | B + C10 | 2009 | Active |
| Goodman Development Inc | B | 1994 | Active |
| Green Michael Construction Inc | B | 1993 | Active |
| Greenleaf Engineering | A, B + C21 | 2001 | Active |
| Griffith Electric & Construction Inc | B + C10 | 1990 | Active |
| H P Custom Homes Inc | B | 2009 | Active |
| H Q Remodeling And Design | B | 2018 | Active |
| Handy Home Improvement Inc | B | 2020 | Active |
| Hann D L Construction Company | B | 1990 | Active |
| Hann D L Painting Inc | B + C33 | 1980 | Active |
| Harbour Constructors Co | A | 2007 | Active |
| Hardy Home Services Inc | B | 2009 | Active |
| Harry Mark Construction Inc | B | 2002 | Active |
| Heli-Hydrant Inc | A, B + C36, C46 | 2026 | Active |
| Heritage Design And Remodel Inc | B | 2024 | Active |
| Hil Builders Inc | B | 1982 | Active |
| Hilltop Development & Construction Inc | A, B | 2018 | Active |
| Hilton Bob Painting & Construction Inc | B + C33 | 1984 | Active |
| Hodne Roofing & Solar | B + C39, C46 | 2004 | Active |
| Horizon Remodeling And Design Inc | B | 2026 | Active |
| Hoxsie Builders Inc | B | 1985 | Active |
| Hunt Plumbing LLC | A + C36 | 2016 | Active |
| Huntington Beach Electric Inc | A + C10 | 2015 | Active |
| Hynes Steven & Associates Inc | B + C15 | 1990 | Active |
| Hyperhead Technologies | B + C7 | 2012 | Active |
| Impact Construction | B | 2002 | Active |
| Industrial Contracting Specialists | B | 2014 | Renew by Dec 31, 2026 |
| Inhabit Space Inc | B | 2009 | Active |
| Interior Door & Closet Company | B | 2007 | Active |
| Islander Extremes Inc | B + C8, C54 | 2013 | Active |
| J & L Constructors Inc | A, B + C20, C53, HAZ | 2012 | Active |
| J B C I | B | 2012 | Active |
| J D Demolition And Grading Inc | A, B + C21 | 2006 | Active |
| J D K Electrical Inc | B + C10 | 1992 | Active |
| J K Construction & Remodeling | B + C47 | 2014 | Renew by Dec 31, 2026 |
| J N L Roofing And Remodeling Inc | B + C39 | 1992 | Active |
| J S S Construction Inc | B | 2006 | Active |
| Jacos & Company Inc | B | 2013 | Active |
| Jagger Construction Inc | B | 2007 | Active |
| JC Construction | B | 2019 | Active |
| JD Engineering Inc | A, B + C21 | 2021 | Active |
| Jeff Jones Construction Inc | B | 2025 | Active |
| JGB Restoration | B | 2018 | Active |
| Jim Was Here Inc | B + C6, C10, C36 | 2000 | Active |
| JLK Concepts Inc | B + C6 | 2012 | Active |
| John Christopher Construction Inc | B + C10, C36 | 2015 | Active |
| JSQ Improvements | B + C53 | 2016 | Active |
| K-Pacific Construction Inc | B + C36 | 2021 | Active |
| Karger Homes Inc | B | 2003 | Active |
| Kayco Builders Inc | B | 1991 | Active |
| Kelter Construction Inc | B + C2, C9, C33 | 2015 | Active |
| Ken's Handyman Express Inc | B | 2000 | Active |
| Kennah Construction Inc | A, B | 1991 | Active |
| Ketcham Contract Glazing Inc | B + C17 | 1986 | Active |
| Kilroy Construction Corporation | B | 1988 | Active |
| Ko Remodeling & Design Inc | B | 2023 | Active |
| Koa Contractors & Engineers | A | 2019 | Active |
| Kohl Kelly Construction Landscape Design & Build Specialist | B2 + C27, D52 | 2006 | Active |
| Koti Construction | B | 2017 | Active |
| KSK Pro LLC | B | 2025 | Active |
| Kustom Construction | B + C6 | 2025 | Active |
| Kutco Co Inc | B | 1998 | Active |
| La Presa Building Group | B | 2026 | Active |