| Business | Phone |
| Keith Schroeder & Assoc Ltd 4837 N Ozark Ave, Harwood Heights 60706 | (708) 457-0772 |
| Landmark Management 5140 N Harlem Ave, Harwood Heights 60706 | (708) 867-4244 |
| Norlynn Management Inc 7324 W Lawrence Ave, Harwood Heights 60706 | (708) 867-6095 |