| Business | Phone |
| Weis Real Estate 55 S Madison St, Oswego 60543 | (630) 554-9202 |
| Coldwell Banker Primus Realty 22 E Merchants Dr, Oswego 60543 | (630) 896-3100 |
| Commercial Primus 21 W Merchants Dr, Oswego 60543 | (630) 844-2222 |
| Re/Max Way 2270 Us Highway 30, Oswego 60543 | (630) 906-3000 |
| Primus Corp 11 W Merchants Dr, Oswego 60543 | (630) 897-6967 |
| Primus Realty 22 E Merchants Dr, Oswego 60543 | (630) 801-0900 |
| Prudential Doss Real Estate 1280 Us Highway 34, Oswego 60543 | (630) 898-8008 |
| Dukane Properties 122 Kirkland Cir, Oswego 60543 | (630) 898-5416 |
| John Greene 267 Route 34, Oswego 60543 | (630) 554-4400 |
| John Greene Land Co 34 Rance Rd, Oswego 60543 | (630) 551-3333 |
| Kettley & Co Inc 58 Chicago Rd, Oswego 60543 | (630) 554-8700 |