Welcome to Cap Rate Index! We are creating the first index for the capitalization rate of properties across US cities and states.

Thousands of New Cap Rates Added for Illinois!

2026-10-17 - We’ve just added thousands of new cap rate data points for Illinois to CapRateIndex.com, significantly expanding our commercial real estate market coverage across the state! From Chicago and its surrounding suburbs to smaller cities throughout Illinois, these updates provide investors, brokers, and real estate professionals with more data to analyze property yields, compare markets, and identify potential investment opportunities.