| Hydrotek Sewer And Pipe Services Inc | A + C36 | 2018 | Renew by Nov 30, 2026 |
| Instrument Control Services | A + C10 | 2010 | Active |
| Integral Design Inc | B | 1991 | Active |
| Interlocking Paving Systems Inc | B + C29, C54 | 1982 | Active |
| J W Enterprises | B + C10 | 1990 | Active |
| J W Facility Services And Construction Inc | B + C7 | 2013 | Active |
| Jamison Construction Corp | B | 2012 | Active |
| JD & Sons Contracting | B | 2026 | Active |
| JPL Construction | A, B + C10 | 1997 | Active |
| Kalorama Landscape Inc | B + C27 | 1980 | Active |
| Kingsconstruction & Sons Inc | B | 2006 | Active |
| Kitchen Places Inc | B | 1999 | Renew by Dec 31, 2026 |
| KM Apex Inc | B | 1992 | Active |
| KMS Builds Inc | B | 2014 | Active |
| Knight Construction Building Specialists Inc | B | 2003 | Active |
| L & H Consulting Inc | A + HAZ | 1994 | Active |
| Lakeview Contracting | B | 2025 | Active |
| Levinson Engineering | A | 2026 | Active |
| Linke Coastal Construction LLC | B | 2023 | Active |
| Little Buddy Builders Inc | B | 2024 | Active |
| Livingston Construction Inc | B + C33 | 1985 | Active |
| Longitude 123 Inc | A | 2017 | Active |
| Luxury Development Contracting | B + C10 | 2014 | Active |
| Luxury Development Contracting Inc | B | 2026 | Active |
| M & T Concrete Inc | B + C8 | 1958 | Active |
| M S I Construction | B | 2009 | Active |
| Major Engineering Marine Inc | A | 1993 | Active |
| Mako Construction Company | B | 2023 | Active |
| Master Construction And Maintenance Inc | B + C33 | 2017 | Active |
| Maxx And JM Construction | B + C33 | 2014 | Active |
| MC Carthy Companies | B + C33 | 1980 | Active |
| MC Combs Inc | B | 2001 | Active |
| MC Kean R Construction Company Inc | A | 1979 | Renew by Nov 30, 2026 |
| McDonald Construction Services Inc | B | 2011 | Active |
| McGillivray Construction Incorporated | A, B | 1986 | Active |
| Melia Industries Inc | B + C8 | 2019 | Active |
| Meridian Design Construction | B | 2008 | Active |
| MHS Remodeling & Electric LLC | B + C10 | 2003 | Active |
| Midtown Construction Ventura Inc | B | 2003 | Active |
| Millhouse Construction LLC | B | 2026 | Active |
| Modern Concrete Services Inc | B + C8 | 1979 | Active |
| Morris Bill Contracting Inc | B + C6, C17 | 1997 | Active |
| Morton Construction Services Inc | A, B + C21, C33 | 2023 | Active |
| MTW Construction Inc | B + C10 | 2025 | Active |
| Mysmartpad Builders | B | 2025 | Active |
| Natural Green Restoration And Construction | B + C27 | 2017 | Active |
| Navigator Construction Inc | B | 2012 | Active |
| Newton Gary Construction Inc | B | 2000 | Active |
| Nu Line Partners Inc | B + C13 | 1984 | Active |
| Oak House Construction | B | 2026 | Active |
| Oaktree Builders Inc | B | 2023 | Active |
| Olmos Contractors Inc. | B | 2026 | Active |
| Osborne Construction Management LLC | B | 2023 | Active |
| Ost Trucks And Cranes Inc | A + HAZ | 1981 | Active |
| Pacific Electric Solar | A + C10 | 2011 | Active |
| Pacific Ridgeline | A | 2016 | Active |
| Paint It Wright | B + C33 | 1993 | Renew by Dec 31, 2026 |
| PC Restoration Inc | B2 | 2025 | Active |
| Peripheral Construction Inc | B | 2026 | Active |
| Pes Energy | B | 2024 | Active |
| Pielaet Construction | B | 2026 | Active |
| Plowboy Landscapes Inc | B + C27 | 1990 | Active |
| Powersmart Electric Inc | B + C10 | 2015 | Active |
| Precision Environmental | B + C2, C21, C22 +2 | 1985 | Active |
| Premier West Construction Services Inc | B | 1981 | Active |
| Quality Construction & Painting | B + C33 | 2014 | Active |
| Quick Turn Maintenance | B2 | 2021 | Active |
| R & R Construction Company | B | 2026 | Active |
| R & R Construction LLC | B | 2022 | Active |
| R & R Demo And Grading Corp | A + C12, C21 | 2012 | Active |
| Ra General Contractors | B | 2023 | Active |
| Ramsey/Moran Construction Inc | A, B | 2015 | Active |
| Randy Villa Construction And Remodeling Inc | B | 2016 | Active |
| Ray Rieman Construction | B + C21, D49 | 2014 | Renew by Dec 31, 2026 |
| Real Model Solutions Inc | A | 2025 | Active |
| Reed Mechanical Systems Inc | B + C20 | 2011 | Active |
| Reed Richard A Backhoe Service Inc | A | 1993 | Active |
| Retrospect Development Inc | B | 2023 | Active |
| Rincon Beach Construction Inc | B | 2016 | Active |
| Rincon Consultants Inc | A + C27, HAZ | 2007 | Active |
| Rooter Solutions | A + C36 | 2023 | Active |
| Ryan's Plumbing Inc | B + C10, C36 | 2011 | Active |
| S F - Hills Construction Inc | B | 2003 | Active |
| Scceswest Inc | A, B | 2018 | Active |
| Schmitt D C Construction Inc | B | 2008 | Active |
| Seacliff Companies | B | 2020 | Active |
| Servpro Of Northwest Ventura County | B | 2021 | Active |
| Shoreline Construction Development Group Inc | B | 2007 | Active |
| Shoreline Constructors Inc | B + C51 | 2011 | Active |
| Simpson Housemovers Inc | B + C21 | 1972 | Active |
| SL Build Construction Inc | B | 2019 | Active |
| Sovi Inc | B2 | 2025 | Active |
| Spencer Construction Inc | B | 2019 | Active |
| Standard Demolition Inc | A + C21, HAZ | 2016 | Active |
| Standard Industries | A + C21, HAZ | 1995 | Active |
| Staples Construction | A, B | 1995 | Active |
| Sterling Builders Inc | B | 2025 | Active |
| Stevens Cody M Construction Inc | B | 2016 | Active |
| Studiodig Build Inc | B | 2020 | Active |
| Suit Aaron Plumbing Inc | B + C36 | 1998 | Active |