The Loop comparable Class A buildings include Willis Tower, Aon Center.
The Loop comparable Class A buildings include Willis Tower, Aon Center.
**Willis Tower** **Aon Center**
| city | Chicago |
|---|---|
| submarket | The Loop |
| tier | prime |
| averageRentLocal | $50/sqft/yr |
| cityClassARentUsd | $52/sqft/yr |
| cityVacancyPct | 24.5% |
| comparableCount | 2 |
Reviewed by Miriam Hollander — Lead market analyst. Last updated 2026-04-15. See our methodology and editorial standards.