- A.A. Boos & Sons
- A&A Safety
- Acoustic Ceiling & Partition of Ohio
- Baker Concrete
- Black Swamp Steel
- Brexton
- Brumbaugh Construction, Inc.
- Build The 419
- CK Construction
- Compass Construction
- Construction Systems, Inc.
- Continental Building Company
- Danbert Contractors
- Danis Building Company
- Delventhal Company
- Dugan & Meyers
- Elford, Inc.
- Gilbane Building Company
- Howard L. Bowers Contracting Co.
- Kirk Bros Company
- Kokosing Industrial
- Lang Masonry
- Lathrop Company
- Limbach Company
- Lincoln Construction
- Messer Construction
- Miami Valley Apprenticeship & Trade Unions
- Mosser Construction
- OCP Contractors
- Parks Drilling Company
- Performance Contracting Inc.
- Peterson Industrial
- Rudolph Libbe Group
- Setterlin Building Company
- Settle Muter Electric
- Shook Construction Company
- Smoot Construction Company
- Southeast Ohio Apprenticeship Programs
- Team Fishel
- The Altman Company
- The Dotson Company
- TP Mechanical Contractors
- Trisco Systems
- Turner Construction Company
- Tuttle Construction
- Universal Contracting Corp
- Valley Interior Systems
- Velocity Construction Company
- Wagner Paving Inc.
