The typical asking rate per listing is in the $10's per square foot per year. The Minnehaha County submarket is seeing a decline in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 7% decrease in rent.
In the last 90 days, 34 listings have been posted online, which means listings most likley are going fast. You'll want to be prepared to make an offer immediately. About 6% of the available leases in the Minnehaha County are subleases, so you will probably have to focus your search on direct office leases. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,830 sqft. Most properties in this area are approximately 2 floors. Most buildings in this region were built in 1986 and are Class B.