On average, listings lease in the $10's per square foot per year. The South Dakota region is experiencing a a boost in rates. In the last 3 months, the median rate went up $1 per sqft per year. That's a 5% increase in rent.
In the last 90 days, 118 listings have been listed, so you'll want to check back regularly for new listings. About 3% of the available space in the South Dakota 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,040 sqft. Most properties in this area are around 2 stories. Most buildings in this region were built in 1990 and are Class A.