| Business | Phone |
| National Council Of Ssa Field 8629 Oakleigh Rd, Parkville 21234 | (410) 668-0260 |
| Elevator Constructors Union 10014 Harford Rd, Parkville 21234 | (410) 661-1491 |
| Laborers Local 912 10014 Harford Rd, Parkville 21234 | (410) 882-8510 |
| Unite 8113 Harford Rd # 200, Parkville 21234 | (410) 663-3800 |