On average, listings lease in the $10's per square foot per year. The Roselle submarket is seeing a a boost in rates. In the last 3 months, the median rate rose $5 per sqft per year. That's a 30% rise in rent.
Compared to the rest of the Chicagoland market, the Roselle region has lower rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 6 listings have come on the market, which means leases might be leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 800 sqft. Most buildings in this market are close to 2 stories. Most buildings in this region were built in 2005 and are Class B.