- M
- M4 Security
- Machado Construction Company, Inc.
- Matos Builders, LLC
- Mayson Dixon Properties & Development
- Meridian Management Group, Inc.
- MGG Enterprise, Inc.
- MidAtlantic Photographic, LLC
- Mountain Consulting, Inc.
- MSP Superior Services, Inc.
- O
- Optimal Power Solutions, LLC
- P
- P & D Contractors, LLC
- Pipe Strong, LLC
- PowerKleen Construction Services
- Preferred Cleaning Janitorial Service Inc.
- Premier Consultants International, Inc.
- Prop Prep Properties, LLC DBA Lightning Electric
- R
- ReeSource Pest, Inc.
- Refine Way, LLC
- Regional Contracting Services, LLC
- Resource Industries, LLC
- Right on Time Media Engineering, Inc.
- RSC Electrical & Mechanical Contractors, Inc.