| Aussie Built Construction Inc | B | 2000 | Active |
| Berardinelli Custom Builders | B | 2006 | Active |
| Bjork Plumbing Inc | B + C36 | 2001 | Active |
| Boaz Construction | B | 2023 | Active |
| Build Tyler Inc | B | 2025 | Active |
| Building With Integrity Inc | B | 2022 | Active |
| Burns-Pacific Construction Inc | A | 1980 | Active |
| By The Foot LLC | B | 2025 | Active |
| C & C Construction Co | B | 2002 | Active |
| C & H Construction | B + C9 | 2013 | Active |
| C 3 G Construction Inc | B + C33 | 2019 | Active |
| California Construction USA Inc | B | 2016 | Active |
| Castleby Construction LLC | B | 2008 | Active |
| Cellar Masters | B | 2014 | Active |
| Certified Pool Inspections Inc | B + C53 | 2023 | Active |
| Conejo HVAC Plumb Electric Roofs Pool Maint Garage Door | B + C10, C20, C36 +3 | 1988 | Active |
| Conejo Restoration | B2 + D64 | 2018 | Active |
| Conejo Valley Construction Inc | A, B | 2018 | Active |
| Conejo Valley Roofing | B + C39 | 2016 | Active |
| Construction Babylon Inc | B | 2026 | Active |
| Custom Building Design Inc | B | 2025 | Active |
| D Drickersen Construction Inc | B | 1997 | Active |
| D I M Development Inc | B | 2014 | Renew by Dec 31, 2026 |
| D P L Contractors Inc | B | 1994 | Active |
| D R D Builders Inc | B | 2018 | Renew by Nov 30, 2026 |
| D3 Construction Development Inc | B | 2021 | Active |
| Davidson Development Inc | B | 2016 | Active |
| Delta Summit Services Inc | B | 2025 | Active |
| Design Wall Systems Incorporated | B + C9 | 2002 | Active |
| Dorado Construction & Design | B | 2026 | Active |
| Earthworks Grading & Excavating Inc | A, B | 2009 | Active |
| Elkington Construction Corp | B + C9 | 2007 | Active |
| England R G Plumbing Company Inc | B + C36 | 2004 | Active |
| Eris Products Inc | B | 2022 | Active |
| Ewing Earthworks Inc | A | 2026 | Active |
| Falcone General Engineering Inc | A + C8 | 1997 | Renew by Nov 30, 2026 |
| Fedvel Construction Inc | B + C2 | 2018 | Active |
| Ferrante Koberling Construction Inc | B | 2013 | Active |
| Field Brothers Construction | B | 2011 | Active |
| Frymer E Construction Inc | B | 1985 | Active |
| G1 Construction Inc Which Will Do Business In California As Tag | B | 2019 | Active |
| Geiger Ted Construction LLC | B | 1993 | Active |
| Glass Bros Inc | B + C36 | 2013 | Active |
| Gruen Construction Co Inc | B | 1998 | Active |
| Herman Construction Company | B + C7 | 1992 | Active |
| Hitt Home Services General Contractors | B | 2026 | Active |
| HMM Construction Inc | B | 2018 | Active |
| Hubert Construction Inc | A, B + C21 | 1986 | Active |
| Hydam Construction Inc | B | 2010 | Active |
| J M W Constructors Inc | A | 1987 | Active |
| Jacksonia Corporation | A, B | 1982 | Renew by Nov 30, 2026 |
| Janisse & Son Inc | B + C8 | 1985 | Active |
| Jaynes Brothers Construction Inc | A, B + C8, D12, D34 | 2007 | Active |
| Jh3 Company | B + C39 | 2013 | Active |
| Kam Coastal Development Inc | B | 1984 | Active |
| Kaplan Jeff Construction Inc | B | 1982 | Active |
| Kashou Construction Inc | B | 2023 | Active |
| Local Roofs LLC | B | 2022 | Active |
| M C N Construction Inc | A, B | 1989 | Active |
| Mammoth Excavating Inc | A | 2007 | Active |
| MC George Construction II Inc | B | 2001 | Active |
| MC Master Scott Construction Inc | B | 1993 | Active |
| Meru Construction Inc | B | 1987 | Active |
| Millworks By Design Inc | B | 2007 | Active |
| Mmci | B | 2001 | Active |
| My Window Solutions Inc | B + C17 | 2010 | Active |
| Neighbor Envy | B + C53 | 2024 | Active |
| Petra Construction Inc | B | 2006 | Active |
| Prime Developments Inc | B | 2016 | Active |
| Quality Homes Renovation Inc | B | 1996 | Active |
| R Help Construction Company Inc | A | 1993 | Active |
| Rabin General Construction Inc | B | 2000 | Active |
| Raven Remodeling Inc | B | 2024 | Active |
| Red Jacket Shaft Construction | B | 2015 | Active |
| Reliable Enterprise Services | B | 1984 | Active |
| Reynolds David Builder Inc | B | 2013 | Active |
| Rohman Builders Inc | B + D24 | 2015 | Active |
| Savoie Construction Inc | B | 1985 | Active |
| Sci Design + Build Inc | B | 2022 | Renew by Nov 30, 2026 |
| Servpro Of Thousand Oaks | B | 2004 | Active |
| Silverman Scott & Associates Inc | B | 2016 | Active |
| SMG Technical Trades | B + C20 | 2007 | Active |
| Socal Brush | B + C49 | 2015 | Active |
| Solardoc Ca | B + C10 | 2015 | Active |
| Solid Shield Construction Inc | B + C39 | 2025 | Active |
| South City Construction Inc | B | 2011 | Active |
| St Elmo's Fire Rigging Inc | B | 2008 | Active |
| Stephenson C & Sons Inc | B | 2004 | Active |
| Stevens Mark Construction Co Inc | B | 1993 | Active |
| Sunburst Skylights | B | 1990 | Active |
| Sunstone Construction Services | B | 1989 | Active |
| Team Bee Construction LLC | B | 2025 | Active |
| Technical Business Solutions Inc | B + C10 | 2005 | Active |
| The Golden Hammer | B + C6 | 2000 | Renew by Dec 31, 2026 |
| Thomas Construction Group Inc | B | 2017 | Active |
| Total Openings Inc | B + D28 | 2010 | Renew by Nov 30, 2026 |
| Tri-Valley Pool & Spa Inc | B + C27, C53 | 2005 | Active |
| Twin Oaks Builders Inc | B | 2023 | Active |
| Wesely-Thomas Enterprises Inc | A, B | 1987 | Active |
| Westside Remodeling | B | 2023 | Active |