| JT Mechanical Company | PLB, GFC + HVA | 2015 | Active |
| Key Mechanical LLC | GFC + CBC, RBC, ELE +2 | 2010 | Active |
| Landmarc Homes LLC | PLB + RBC, CBC | 2015 | Active |
| Larrymore Organization Inc | PLB, GFC + RBC, CBC, HVA | 1994 | Active |
| Lighthouse Gas & Plumbing Inc | PLB, GFC | 2007 | Active |
| M&M Industries Inc | GFC + HVA | 2020 | Active |
| Mechanical Air Services Inc | GFC + HVA | 1996 | Active |
| Mechanical Service Solutions Corporation | PLB, GFC + HVA, ELE | 2014 | Active |
| Mechollage Inc | GFC + CBC, RBC, ELE +1 | 2010 | Active |
| Metro Mechanical Corp | GFC + HVA | 2002 | Active |
| Mid Atlantic Companies Inc | GFC + HVA | 1998 | Active |
| Mike Straddeck & Associates | GFC + HVA | 2005 | Active |
| Mr Plumber Inc | PLB, GFC + LPG, HVA | 2010 | Renew by Oct 31, 2026 |
| Neptune Mechanical LLC | GFC, PLB + HVA | 2024 | Active |
| New Age Construction Of Tidewater Inc | GFC + CBC, HVA | 2024 | Active |
| New Paradigm Plumbing LLC | PLB, GFC | 2025 | Active |
| Newbern Mechanical Company Inc | GFC + HVA | 2008 | Active |
| Ocean Air Heating & Cooling LLC | GFC + HVA | 2003 | Active |
| Old Dominion Restorations LLC | PLB + RBC, ASB | 2022 | Active |
| Paragonn Incorporated | PLB, GFC + RBC, CBC, ELE +1 | 2013 | Active |
| Paul S Heating And Air Conditioning LLC | GFC + HVA | 2009 | Active |
| Pelican Bay Plumbing LLC | PLB, GFC | 2008 | Active |
| Pendyk Plumbing LLC | PLB, NGF | 2013 | Active |
| Perez Enterprises Inc | PLB, GFC + RBC, CBC | 2006 | Active |
| Perfect Solutions LLC | PLB + RBC, CIC, HIC | 2011 | Active |
| Performance Mechanical Inc | GFC, PLB + RBC, CBC, ELE +1 | 2015 | Active |
| Peter Building & Construction Inc | GFC, PLB + AES | 2022 | Active |
| Pincon Inc | PLB, GFC + RBC, CBC, ELE +3 | 2000 | Active |
| Plumbing Services 757 LLC | PLB | 2024 | Active |
| Precision Welding And Gas LLC | GFC | 2017 | Active |
| Pride Construction Company LLC | PLB + ELE, RBC | 2023 | Active |
| Proffesional Remodeling Group LLC | PLB + RBC, CBC | 2015 | Active |
| R.J.C. Inc | GFC + ELE, HVA | 2006 | Active |
| RJ S Plumbing Service LLC | PLB, GFC | 2021 | Active |
| RPG Construction Inc | GFC, PLB + CIC, RBC | 2015 | Active |
| Russell A Jackson LLC | PLB, GFC + CIC, HIC, HVA | 2010 | Active |
| Schoenfeld Plumbing Company | PLB | 2013 | Active |
| Scott Fisher Inc | GFC + HVA | 2021 | Active |
| Security Plumbing Inc | PLB | 1992 | Active |
| Sens Air Conditioning & Heating Inc | GFC + HVA | 2011 | Active |
| Sheppard Plumbing LLC | PLB | 2026 | Active |
| Shoreline Mechanical Inc | GFC + HVA | 1993 | Active |
| Siren Pipeworks Plumbing & Gas LLC | PLB, GFC | 2026 | Active |
| Smartgrid Electric LLC | PLB + ELE | 2025 | Active |
| Smith And Keene Home Services LLC | PLB, GFC + ELE, HVA | 2024 | Active |
| Solar Services Inc | PLB, GFC + RBC, CBC, ELE +2 | 1997 | Active |
| Southampton Roads Construction Corp | PLB + CEM, H/H, PAV | 2002 | Active |
| Southernwind Enterprises LLC | PLB, GFC + HVA | 2026 | Active |
| Stillman Electric Corporation | GFC + ELE, HVA | 1995 | Active |
| Straight Line Plumbing Incorporated | GFC, PLB | 2019 | Active |
| Structural Mechanical Inc | PLB, GFC + HVA | 2003 | Active |
| Succor Inc | NGF, GFC + LPG, HVA | 2011 | Active |
| Sun Mechanical LLC | GFC + AES, HVA | 2012 | Renew by Nov 30, 2026 |
| Supreme Plumbing Company | PLB | 2026 | Active |
| Taylor And Taylor Properties LLC | GFC, PLB + RBC | 2022 | Active |
| Thermo-Trol Systems Inc | NGF, GFC + LPG, ELE, HVA | 1996 | Renew by Nov 30, 2026 |
| Tidewater Backflows LLC | PLB | 2026 | Active |
| Tidewater Gas Plumbing LLC | GFC | 2010 | Active |
| Tony And Son Plumbing LLC | GFC, PLB | 2018 | Renew by Nov 30, 2026 |
| Top Floors LLC | PLB + RBC | 2019 | Active |
| United Mechanical Contractors Inc | GFC + HVA, REF | 2006 | Active |
| Vetras Inc | PLB | 2024 | Active |
| Vic S Plumbing Inc | PLB, GFC | 2000 | Active |
| Virginia Bath Works Inc | PLB + HIC | 2025 | Active |
| Virginia Beach Mechanical Services Incorporated | PLB, GFC + HVA | 1993 | Active |
| Virginia Mechanical Services LLC | GFC + HVA | 2025 | Active |
| Virginia Pipeworks LLC | PLB, GFC + H/H | 2004 | Active |
| Volk Plumbing LLC | PLB | 2026 | Active |
| W E Care Insulation & Air LLC | PLB + ELE, HVA | 2016 | Active |
| W E Ludwick Plumbing & Heating Co Inc | PLB, GFC | 2018 | Active |
| Waypoint Mechanical Service LLC | GFC, PLB + HVA | 2020 | Active |
| White Goods Services Inc | GFC + HVA | 2000 | Active |
| Whitetail Plumbing LLC | PLB | 2019 | Active |
| WTS Contracting LLC | PLB + ELE, CIC, HIC | 2010 | Active |
| Wynne-Star Plumbing & Drain Inc | PLB, GFC | 1999 | Active |
| Yoder Plumbing Inc | PLB | 2008 | Active |