On average, listings lease in the $20's per square foot per year. The Rosemont submarket is going through a decline in rates. In the last 3 months, the median rate decreased $3 per sqft per year. That's a 10% decline in rent.
Compared to the rest of the Chicagoland market, the Rosemont submarket has higher rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 8 listings have been posted online, which means spaces are probably going fast. You'll want to be prepared to make an offer immediately. 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 1,860 sqft. Most properties in this region are close to 11 stories. Most buildings in this region were built in 1988 and are Class A.