Most listings are in the $10's per square foot per year. The Roselle submarket is seeing a an increase in rates. In the last 3 months, the median rate rose $20 per sqft per year.
Compared to the rest of the Chicagoland market, the Roselle region has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 6 listings have been posted online, which means new availabilities most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 183% of the available leases in the Roselle 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 1,500 sqft. Most buildings in this area are around 2 floors. Most buildings in this region were built in 1998 and are Class B.