Most listings are in the $10's per square foot per year. The Minnehaha County submarket is going through a an increase in rates. In the last 3 months, the median rate rose $1 per sqft per year. That's a 7% increase in rent.
In the last 90 days, 71 listings have been listed, so you'll want to check back regularly for new listings. About 3% of the available space in the Minnehaha County are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 1,960 sqft. Most buildings in this market are around 2 stories. Most buildings in this area were built in 1987 and are Class A.