On average, listings lease in the $20's per square foot per year. The Rosemont region is experiencing a decrease in rates. In the last 3 months, the median rate fell $3 per sqft per year. That's a 10% decrease in rent.
Compared to the rest of the Chicagoland market, the Rosemont region has more expensive rates, and you'll need to make a great offer to be in this hot region.
In the last 90 days, 16 listings have come on the market, which means new listings most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 6% of the listings in the Rosemont are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,670 sqft. Most buildings in this area are close to 11 stories. Most buildings in this region were built in 1988 and are Class A.