The typical asking rate per listing is in the $20's per square foot per year. The Minneapolis submarket is going through a an increase in rates. In the last 3 months, the median rate went up $21 per sqft per year.
In the last 90 days, 276 listings have been listed, so you'll want to check back regularly for new listings. About 50% of the listings in the Minneapolis 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 on the market, so finding a space for a small business might be tough.
Even though the median size is 3,600 sqft, there are still 0 new availabilities below 2,000 sqft. Most properties in this area are around 3 floors. Most buildings in this market were built in 1927 and are Class B.