The typical asking rate per listing is in the $20's per square foot per year. The Riverside region is seeing a an increase in rates. In the last 3 months, the median rate rose $25 per sqft per year.
Compared to the rest of the Chicagoland market, the Riverside region has more expensive rates, and you'll need to make a great offer to be in this hot submarket.
In the last 90 days, 1 listings have come on the market, which means leases might be leasing quickly. You'll want to be prepared to make an offer immediately. 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 on the market, 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 A.