The typical asking rate per listing is in the $20's per square foot per year. The Iowa City region is experiencing a a rise in rates. In the last 3 months, the median rate went up $20 per sqft per year.
In the last 90 days, 6 listings have been made available, which means listings are probably going fast. You'll want to be prepared to tour spaces as quick as possible. 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 2,210 sqft. Most properties in this region are around 2 stories. Most buildings in this area were built in 1984 and are Class A.