Most listings are in the $20's per square foot per year. The Bannockburn submarket is going through a decrease in rates. In the last 3 months, the median rate decreased $11 per sqft per year. That's a 30% decline in rent.
Compared to the rest of the Chicagoland market, the Bannockburn region has smaller rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 1 listings have been listed, which means office spaces might be going fast. You'll want to be prepared to make an offer immediately. About 900% of the available leases in the Bannockburn are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 3,180 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this region are close to 3 floors. Most buildings in this area were built in 1988 and are Class A.