Most listings are in the $20's per square foot per year. The Minnesota region is seeing a a rise in rates. In the last 3 months, the median rate went up $1 per sqft per year. That's a 7% increase in rent.
In the last 90 days, 1212 listings have been made available, so you'll want to check back regularly for new listings. About 3% of the available space in the Minnesota 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,250 sqft. Most buildings in this area are around 2 floors. Most buildings in this area were built in 1984 and are Class B.