The typical asking rate per listing is in the $10's per square foot per year. The Dubuque County region is going through a an increase in rates. In the last 3 months, the median rate went up $16 per sqft per year. That's a Inf% increase in rent.
In the last 90 days, 34 listings have been posted online, which means leases are probably leasing quickly. You'll want to be prepared to make an offer immediately. 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 4,240 sqft, there are still 0 leases below 2,000 sqft. Most properties in this market are approximately 2 stories. Most buildings in this region were built in 1973 and are Class B.