The typical asking rate per listing is in the $20's per square foot per year. The Riverside region is experiencing a a rise in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 4% rise in rent.
Compared to the rest of the Chicagoland market, the Riverside region has higher rates, and you'll need to make a great offer to be in this hot submarket.
In the last 90 days, 1 listings have been posted online, which means office spaces might be going fast. You'll want to be prepared to tour spaces as quick as possible. About 100% of the available leases in the Riverside are subleases, so you might be able to sign a shorter term by taking over a previous 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 2,340 sqft. Most buildings in this region were built in 1871 and are Class B.