The typical asking rate per listing is in the $10's per square foot per year. The Rock Island County submarket is going through a an increase in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 8% increase in rent.
In the last 90 days, 66 listings have come on the market, so you'll want to check back regularly for new listings. About 27% of the available leases in the Rock Island County 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 posted, so finding a space for a small business might be tough.
Even though the median size is 3,170 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this area are around 1 stories. Most buildings in this area were built in 1972 and are Class B.