23. Avison Young
| Address | 9700 Higgins |
| City | Rosemont |
| State | IL |
| Zip | 60093 |
| Phone | 847.849.1900 |
| Website | |
| Total Value of Sales and Leasing Transactions | $2,802,007,801.00 |
| Total Global Leasing Volume | $1,860,788,963.00 |
| Total Leases | 1,786 |
| Total Global Sales Volume | $941,218,838.00 |
| Total Properties Sold | 231 |
| Brokers Employed |