| Business | Phone |
| Olbo Corp 1027 Maryland Ave # A, Hagerstown 21740 | (301) 739-7774 |
| Bricker Associates 10912 Hartle Dr, Hagerstown 21742 | (301) 824-2109 |
| Greenwich Park Homes 645 Observatory Dr, Hagerstown 21742 | (301) 791-0004 |
| Hagerstown-Washington Co 25 E Franklin St, Hagerstown 21740 | (301) 791-4932 |
| Hilton C Smith Co 10306 Remington Dr, Hagerstown 21740 | (301) 733-4365 |
| Washco Development 1423 Dual Hwy, Hagerstown 21740 | (301) 791-4882 |