Most listings are in the $10's per square foot per year. The Champaign submarket is experiencing a an increase in rates. In the last 3 months, the median rate went up $20 per sqft per year.
In the last 90 days, 40 listings have been listed, which means new availabilities most likley are going fast. You'll want to be prepared to make an offer immediately. About 48% of the listings in the Champaign are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 3,200 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this market are close to 2 stories. Most buildings in this market were built in 1988 and are Class A.