The typical asking rate per listing is in the $10's per square foot per year. The Darien region is seeing a decrease in rates. In the last 3 months, the median rate decreased $2 per sqft per year. That's a 11% decrease in rent.
Compared to the rest of the Chicagoland market, the Darien submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 13 listings have been made available, which means new availabilities most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 4,515 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this market are around 2 stories. Most buildings in this region were built in 1990 and are Class B.