| Business | Phone |
| Jsl Properties Inc 16 E Old Willow Rd 100, Prospect Heights 60070 | (847) 459-3420 |
| New Ventures Ltd 16 E Old Willow Rd 100, Prospect Heights 60070 | (847) 459-3441 |
| Pabcor Equity Corp 664 N Milwaukee Ave 200, Prospect Heights 60070 | (847) 520-4200 |
| Voss Brothers 747 Pinecrest Dr, Prospect Heights 60070 | (847) 537-4275 |
| Willow Park Property Owners 772 Piper Ln, Prospect Heights 60070 | (847) 419-9728 |
| Hansen Radler Realty Ltd 4 Piper Ln, Prospect Heights 60070 | (847) 459-0942 |