| Business | Phone |
| Blue Chip Property Management 3645 Warrensville Center Rd, Cleveland 44122 | (216) 921-4440 |
| Chariot House Investments 2000 Lee Rd, Cleveland 44118 | (216) 932-7011 |
| First Union Management 55 Public Sq, Cleveland 44113 | (216) 621-8925 |
| Global Enterprises Realty Co 2140 Lee Rd, Cleveland 44118 | (216) 320-9799 |
| Lake Erie Realty Investments 1225 Marlowe Ave, Cleveland 44107 | (216) 227-9946 |
| Landmark Office Towers 101 W Prospect Ave, Cleveland 44115 | (216) 566-3959 |