The typical asking rate per listing is in the $10's per square foot per year. The Rock Island submarket is seeing a decrease in rates. In the last 3 months, the median rate decreased $4 per sqft per year. That's a 21% decrease in rent.
In the last 90 days, 14 listings have been made available, which means office spaces are probably going fast. You'll want to be prepared to make an offer immediately. About 7% of the available leases in the Rock Island are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 7,750 sqft, there are still 0 listings below 2,000 sqft. Most buildings in this market are around 2 stories. Most buildings in this area were built in 1966 and are Class B.